Unit Price Calculator

Compare package deals fairly by reducing each to its price per unit.

How the Unit Price Calculator works

A unit price calculator divides the total price of a package by the quantity it contains to reveal the cost of a single, standardized unit such as one ounce, one pound, one liter, one square foot, or one count. The core formula is straightforward: Unit Price = Total Price / Quantity, often written as UP = P / Q, where P is the dollar amount on the price tag and Q is the measured size of the package. To make two products genuinely comparable, both must be expressed in identical units before the division happens, because $0.20 per ounce and $0.20 per gram are not the same number even though the digits match.

Inside the calculator, four steps run sequentially. Step 1 reads the user inputs for price (P), quantity (Q), and unit type (oz, lb, fl oz, g, kg, count, sq ft, gal, L). Step 2 normalizes the quantity by converting it into a base unit chosen for the comparison, using exact conversion factors such as 1 lb = 16 oz, 1 kg = 1000 g, 1 gal = 128 fl oz, and 1 L = 33.814 fl oz. Step 3 performs the division and rounds the result to a consistent number of decimal places, usually three or four, to avoid the rounding traps that hide pennies on bulk purchases. Step 4 ranks two or more entries from lowest to highest cost per unit so the cheaper option is obvious at a glance.

Edge cases the calculator handles include multi-pack counts (a 12-pack of 16 oz bottles equals 192 fl oz total before division), net versus gross weight (use net weight printed on the nutrition panel, not shipping weight), buy-one-get-one offers (effective quantity doubles while price stays the same), and coupons or instant rebates (subtract the discount from P before dividing). For coupon math, the corrected formula becomes UP = (P - D) / Q, where D is the dollar discount. For percent-off promotions, the formula expands to UP = P x (1 - r) / Q, where r is the discount rate expressed as a decimal.

The calculator also flags an important comparison rule: a lower sticker price never automatically means a lower unit price. A 32 oz jar for $5.76 looks more expensive than a 24 oz jar for $4.80, yet the larger jar wins on unit cost. By forcing the math, the tool removes guesswork and lets shoppers, project estimators, and small-business buyers make defensible purchase decisions in seconds.

Example calculation

Three worked scenarios show how the unit price calculator changes a buying decision in real money terms.

Scenario 1: Olive oil at the grocery store. Bottle A holds 16.9 fl oz and costs $8.49. Bottle B holds 33.8 fl oz and costs $14.99. Bottle C holds 67.6 fl oz (a bulk-club size) and costs $24.49. Dividing each price by ounces gives Bottle A at $0.502 per fl oz, Bottle B at $0.443 per fl oz, and Bottle C at $0.362 per fl oz. A household that uses 67.6 fl oz of olive oil per year saves about $9.46 by buying one large bottle instead of four small ones, assuming the oil stays fresh.

Scenario 2: Toilet paper with a coupon. Brand X sells a 12-roll mega pack for $14.99 with 264 sheets per roll, total 3,168 sheets. Brand Y sells an 18-roll value pack for $19.49 with 198 sheets per roll, total 3,564 sheets, and a $3.00 manufacturer coupon. Brand X comes out to $0.00473 per sheet. Brand Y after the coupon becomes ($19.49 - $3.00) / 3,564 = $0.00463 per sheet. Brand Y is cheaper by about $0.32 across the full pack, but only after the coupon applies.

Scenario 3: Ground coffee comparison across pack sizes.

Product	Size	Price	Unit price	Rank
House roast bag	12 oz	$8.99	$0.749 / oz	3
House roast can	30.5 oz	$14.49	$0.475 / oz	2
Warehouse-club tub	48 oz	$18.99	$0.396 / oz	1
Single-serve pods (24 ct)	~9.5 oz brewed equivalent	$13.99	$1.472 / oz	4

The warehouse-club tub costs less than half per ounce compared to single-serve pods. Over a year, a two-cup-per-day drinker who consumes roughly 18 oz of ground coffee per month saves about $232 versus pods and about $76 versus the small bag. These three scenarios demonstrate that unit pricing rewards three behaviors at once: buying larger when storage allows, applying coupons before comparing, and treating convenience formats (pods, snack packs, single-serve) as a separate premium category.

Tips for using the Unit Price Calculator

• Always check the printed net weight, not the package volume. A cereal box may look big yet contain only 12 oz of product because of settling space, which makes the per-ounce math worse than the shelf size suggests.
• Match units before dividing. A 750 mL wine bottle at $14 and a 1.5 L bottle at $26 must both convert to milliliters first: $0.01867 per mL versus $0.01733 per mL, a 7.2% savings on the larger size.
• Watch the unit on the shelf tag itself. Some stores price meat per pound, deli items per 100 grams, and bulk bins per ounce on adjacent shelves, which can make the printed tag misleading without manual recalculation.
• Factor in spoilage risk for perishables. A 5 lb bag of spinach at $0.80 per oz beats a 1 lb bag at $1.20 per oz only if you can eat all 5 lb before it wilts. Discard one third and the real cost jumps 50%.
• Subtract loyalty rewards before comparing. If a $20 purchase earns $1 in store credit, the effective price is $19, lowering the unit price by 5% and sometimes flipping which package actually wins.
• Treat sales tax separately. Unit price compares pre-tax sticker math, but in states that tax groceries, the after-tax unit price determines real out-of-pocket cost and should be calculated for fairness across state lines.
• Beware shrinkflation. A box that dropped from 16 oz to 14 oz while keeping the same $4.99 price raised the unit price from $0.312 per oz to $0.356 per oz, a 14% hidden increase that does not appear on the price tag itself.
• Use unit price for non-grocery items too: lumber by linear foot, fabric by yard, paint by square foot of coverage, and even insurance by dollars per $1,000 of coverage. The formula generalizes far beyond food.
• Compare single-serve to bulk on the same energy basis. Twelve 12-oz soda cans equal 144 fl oz, so a 2-liter bottle at 67.6 fl oz is half the volume despite looking larger, and only beats cans on unit price when priced under about $1.65.
• Recalculate when packaging changes. Manufacturers frequently shift between ounces, count, and grams to obscure increases. Re-run the unit price every three to six months on staples you buy on autopilot.

The history and origin of unit pricing on US shelf tags

Unit pricing first became mandatory in the United States during the late 1960s and early 1970s, when New York City passed the first major unit-pricing regulation in 1971 followed by Massachusetts, Connecticut, Rhode Island, and several other states. The push came from consumer-protection advocates who showed that shoppers consistently misjudged which package was cheaper when only the total price appeared on the tag.

The federal Fair Packaging and Labeling Act of 1966 did not require unit pricing directly, but it opened the door to state-level rules. Today, about 19 states and several large municipalities require unit-price disclosure on most grocery items, while the remaining states leave it voluntary. The standard format that emerged places the unit price in a smaller font next to the total price, often inside a colored box, with the unit type (per oz, per lb, per fl oz, per ct) spelled out so customers do not have to guess.

The math behind those shelf tags is exactly what a unit price calculator automates. Before the regulations, retailers had no incentive to expose the comparison because confusion favored higher-margin small sizes. Once the math became visible, manufacturers responded by tilting promotion toward larger pack sizes and warehouse-club formats, which is why bulk pricing dominates modern grocery retail.

Regional and international variations in unit pricing

Unit pricing rules vary widely by country and region, which matters when comparing imported goods or shopping across borders. In the United Kingdom, unit pricing has been legally required since 2004 under the Price Marking Order, with prices shown per 100 g, per kilogram, per liter, or per 100 mL depending on the product category. Australia mandates unit pricing for grocery retailers with floor area over 1,000 square meters, also using metric units. The European Union requires unit pricing in all member states under Directive 98/6/EC.

The United States stands out for its mixed system: roughly 19 states mandate unit pricing, the rest leave it optional, and units alternate between customary (oz, lb, fl oz, gal) and metric (g, kg, mL, L) depending on the product. A US shopper comparing a domestic 16 oz peanut butter jar with an imported 500 g jar must convert one to the other before the unit prices become comparable. The exact conversion is 16 oz = 453.592 g, so a domestic $4.99 / 16 oz jar at $0.01100 per gram beats an imported $5.49 / 500 g jar at $0.01098 per gram by less than a tenth of a cent, essentially a tie.

For cross-border shopping, also account for currency conversion at the point of payment, not at the tag, because credit-card foreign-exchange fees of 1 to 3 percent shift the true unit price upward.

Common misconceptions about unit price math

The single biggest misconception is that the largest package is always the cheapest per unit. It is not. Manufacturers routinely price middle sizes most aggressively to capture the largest customer segment, and warehouse-club bulk packs sometimes carry a premium for the convenience of buying once. A 2019 Consumer Reports analysis found that the largest size was the lowest unit price only about 70 percent of the time, meaning roughly 3 in 10 shoppers who default to bulk overpay.

A second misconception is that unit price already includes discounts. It does not. Shelf-tag unit prices are calculated from the everyday regular price, so weekly sale prices, digital coupons, and store-card discounts all change the real unit cost. Always recalculate when a promotion applies.

A third misconception is that two products of the same type are interchangeable at equal unit prices. They are not, because concentration, ingredient quality, and serving yield differ. Concentrated laundry detergent at $0.10 per fl oz can wash twice as many loads as standard detergent at $0.07 per fl oz, making the concentrate roughly 30 percent cheaper per load even though it looks more expensive on the shelf. Whenever possible, compute the unit price on the actual usage unit (per load, per cup, per serving) rather than the packaging unit.

Advanced use cases beyond grocery shopping

The unit price formula extends far beyond the supermarket. Contractors use it to compare lumber priced per linear foot versus per board foot, where a 2x4x8 at $4.20 equals $0.525 per linear foot or $0.79 per board foot. Painters compare paint by square feet of coverage per gallon, not by gallon price, because a $55 premium paint covering 400 sq ft at $0.138 per sq ft beats a $35 builder-grade paint covering 200 sq ft at $0.175 per sq ft.

Small-business owners use unit pricing to compute cost per unit for manufactured goods, dividing total production cost by units produced to set a profitable selling price. The formula is Cost per Unit = Total Production Cost / Units Produced, and the matching selling price per unit calculator adds a markup: Selling Price = Cost per Unit x (1 + Markup Rate). For a product costing $4.80 per unit with a 60 percent markup, the selling price becomes $7.68.

Investors apply the same logic to dividend yield (dollars of dividend per dollar invested), expense ratios (dollars of fund cost per $1,000 invested), and even healthcare costs (dollars per office visit on an HSA plan). In every case, the underlying math is identical: total cost divided by a standardized quantity, then compared head to head.

Mistakes and pitfalls that distort unit price comparisons

The most expensive mistake is comparing unit prices across different units without converting. A 1.75 L bottle of mouthwash at $9.99 and a 50 fl oz bottle at $8.49 cannot be ranked until both are expressed in the same unit. 1.75 L equals 59.18 fl oz, so the larger bottle is $0.169 per fl oz and the smaller is $0.170 per fl oz, a near tie that looks like a wide gap if you accidentally compare per liter to per ounce.

A second pitfall is ignoring the bundle discount on multi-buy promotions. A buy-3-for-$10 deal on items priced at $3.99 each lowers the effective per-item price to $3.33, dropping the unit price by 16.5 percent, but the shelf tag rarely reflects this until checkout.

A third pitfall is using packaging weight instead of edible or usable weight. Frozen shrimp sold by the bag often includes a glaze of ice that can be 15 to 25 percent of total weight, so a $14.99 / 2 lb bag at $7.50 per lb is really closer to $9.40 per lb of actual shrimp. The same applies to canned tuna in water (drained weight is what counts) and bone-in meats.

Fourth, watch for psychological pricing that exploits unit-blindness, such as $0.99 single-serve items that look cheap but compute to $4 to $6 per pound, far above the bulk equivalent.

How unit price connects to markup, margin, and break-even math

For business owners, unit price is the foundation under three other calculations: markup, profit margin, and break-even. The selling price per unit formula starts with cost per unit and layers on the markup the business wants to earn, while profit margin measures the percent of the selling price that remains as profit after cost. Markup and margin are not the same number: a 50 percent markup equals a 33.3 percent margin, because markup is calculated against cost and margin against selling price.

The break-even unit count uses the same per-unit logic to find the sales volume at which total revenue equals total cost, computed as Break-even Units = Fixed Costs / (Selling Price per Unit - Variable Cost per Unit). A business with $10,000 in monthly fixed costs, a $25 selling price, and a $15 variable cost per unit breaks even at 1,000 units sold per month. Understanding the per-unit version of price, cost, and contribution margin lets owners price defensively, negotiate supplier contracts intelligently, and forecast cash flow with accuracy.

Finding the better buy: cost per ounce

The smartest way to compare different package sizes is to convert each to its price per ounce, then pick the lowest. The table below compares three sizes of the same product, with each price-per-ounce figure calculated as total price divided by ounces. Larger isn't automatically cheaper, but here the bulk tub wins.

Package	Total price	Size (oz)	Price per ounce	Better buy?
Small jar	$4.80	24 oz	$0.200	No
Large jar	$5.76	32 oz	$0.180	No
Bulk tub	$9.60	64 oz	$0.150	Yes (lowest)

Run your own numbers in seconds with our Unit Price Calculator to instantly see which package gives you the lowest cost per ounce.

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Unit Price Calculator — frequently asked questions

What units?

Use the same unit for both items (e.g. per ounce, per item) to compare correctly.

Bigger always cheaper?

Not always — unit price reveals when small packs are actually better value.

Why compare unit price?

It standardizes different package sizes so you see the real best value.

How do you calculate unit price?

To calculate unit price, divide the total price by the quantity in standardized units. The formula is Unit Price = Total Price / Quantity. For a 24 oz jar of peanut butter at $4.80, the unit price is $4.80 / 24 = $0.20 per ounce. Always express both items in the same unit (ounces, pounds, liters, or count) before comparing, because $0.20 per ounce and $0.20 per gram are very different costs. Subtract coupons or store-card discounts from the total price first if you want the after-discount unit cost rather than the shelf-tag version.

How do you calculate price per unit for a product?

Price per unit equals total package price divided by package quantity. For example, a 12-pack of 16 fl oz soda bottles totals 192 fl oz, so a $7.68 case price divides to $0.04 per fl oz. For grocery shopping, use the unit (ounce, pound, count) that lets you compare the largest number of competing products. For business pricing, divide total production cost by units produced to find cost per unit, then add a markup to set the selling price. The same arithmetic answers both retail and wholesale questions because the underlying formula does not change.

How is unit price calculated on grocery shelf tags?

US grocery shelf tags calculate unit price by dividing the regular shelf price by the package quantity expressed in a standardized unit. Most stores show per ounce or per pound for solids, per fluid ounce or per gallon for liquids, and per 100 count for items like diapers or coffee pods. The unit price never includes weekly sale discounts, loyalty rewards, or manufacturer coupons, so the printed number is a starting point rather than the final out-of-pocket cost. Recalculate manually when any promotion applies, and the cheaper package may flip.

What is the formula for unit price?

The unit price formula is Unit Price = Total Price / Quantity, written algebraically as UP = P / Q. When a discount applies, expand to UP = (P - D) / Q for dollar coupons or UP = P x (1 - r) / Q for percent-off deals, where D is the dollar discount and r is the discount rate as a decimal. For multi-item bundles, calculate total bundle price divided by total bundle quantity. The formula generalizes to any context where you need cost per standardized unit, including paint per square foot and lumber per linear foot.

How to calculate selling price per unit for a business?

To calculate selling price per unit, start with cost per unit and add the markup percentage you want to earn. The formula is Selling Price per Unit = Cost per Unit x (1 + Markup Rate). If a product costs $8.50 to produce and you want a 60 percent markup, the selling price is $8.50 x 1.60 = $13.60. To compute the cost per unit itself, divide total production cost by units produced. For example, $25,000 in total production cost divided by 5,000 units gives $5 per unit. Then apply markup to find what to charge customers.

How to calculate sales price per unit when offering a discount?

Sales price per unit equals the regular selling price minus the discount. The formula is Sales Price per Unit = Regular Price x (1 - Discount Rate). A $20 product on 25 percent off sells at $20 x (1 - 0.25) = $15. For dollar-off promotions, subtract directly: Sales Price = Regular Price - Discount Amount. Always verify that the discounted sales price still covers your variable cost per unit, otherwise each sale loses money. The break-even discount is the markup percentage divided by one plus the markup percentage, expressed as a decimal.

How do you calculate unit price when items are sold in different units?

When products are sold in different units, convert both into a single shared unit before dividing. To compare a 750 mL wine bottle at $14.00 to a 1.5 L bottle at $26.00, convert 1.5 L to 1,500 mL and 750 mL stays as is. Then $14.00 / 750 = $0.01867 per mL and $26.00 / 1,500 = $0.01733 per mL. The larger bottle is cheaper per milliliter by 7.2 percent. Common conversions to remember: 1 lb = 16 oz, 1 gal = 128 fl oz, 1 kg = 1,000 g, 1 L = 33.814 fl oz.

How to calculate per unit price with a coupon or store discount?

Subtract the coupon or discount from the total price before dividing by quantity. The corrected formula is Unit Price = (Total Price - Discount) / Quantity. A $15.99 box of 60 laundry pods with a $3 coupon becomes ($15.99 - $3.00) / 60 = $0.216 per pod, down from $0.267 per pod at the regular price. Stack manufacturer coupons, store coupons, and loyalty rewards by subtracting each in turn. Always recalculate competing products after the same discount logic applies, because the cheapest unit price often flips once promotions are factored in.

How to calculate the price per unit for bulk warehouse-club purchases?

For bulk warehouse-club packs, divide total club price by total package quantity, including all sub-units inside the case. A 48-count package of 20 fl oz water bottles contains 960 fl oz total, so a $9.99 case price divides to $0.0104 per fl oz. Compare this number to single-bottle pricing at a regular grocery store. Also factor in club membership fees ($60 to $120 per year) divided by your annual purchases to find true unit cost. If you spend $2,000 per year, a $60 membership adds about 3 percent to every unit price, which can erase the bulk savings on small purchases.

How do you calculate the unit price when comparing concentrated vs regular products?

Calculate the unit price on the usage unit (per load, per cup, per serving) rather than the packaging unit. A 50 fl oz bottle of 2X concentrated laundry detergent washing 64 loads at $11.99 costs $0.187 per load, while a 100 fl oz bottle of regular detergent washing 50 loads at $9.99 costs $0.200 per load. The concentrated product is cheaper per load even though it costs more per ounce. Always look for the load count, serving count, or coverage area printed on the label, because that is the unit your household actually consumes.

How to calculate unit price for items sold by weight?

Divide total price by net weight in the standardized unit, not gross or shipping weight. For deli meat at $11.99 per pound, a 0.62 lb purchase costs $11.99 x 0.62 = $7.43. To compare to a packaged 8 oz version at $5.99, convert 8 oz to 0.5 lb and compute $5.99 / 0.5 = $11.98 per pound. The deli and the packaged version are essentially tied. For frozen seafood or canned goods, use the drained or thawed weight printed on the nutrition panel because shipping ice and brine add inedible mass that inflates the gross figure.

What is unit pricing and why does it matter for shoppers?

Unit pricing is the display of cost per standardized unit (per ounce, per pound, per liter, per count) on a price tag so shoppers can compare different package sizes head to head. It matters because the largest package is not always the cheapest per unit, and the smallest is rarely the bargain it appears. About 19 US states legally require unit pricing on grocery shelves under consumer-protection laws dating to the early 1970s, while the UK, EU, and Australia mandate it nationally. The average household that uses unit price to choose staples saves roughly 8 to 12 percent on a typical grocery bill, according to consumer studies.

How to calculate a unit price for non-grocery items like paint or lumber?

For paint, divide gallon price by coverage area in square feet, not by gallon. A $55 premium paint covering 400 sq ft costs $0.138 per sq ft, while a $35 builder-grade paint covering 200 sq ft costs $0.175 per sq ft, making the premium paint 21 percent cheaper per square foot covered. For lumber, divide by linear foot or board foot depending on the project: a 2x4x8 at $4.20 is $0.525 per linear foot or $0.79 per board foot (a board foot equals 144 cubic inches). Always match the unit to how you measure the job.

How is unit price calculated when there is shrinkflation?

Shrinkflation hides price increases by shrinking package size while keeping the sticker price the same, so unit price reveals the hidden hike. A cereal box that dropped from 16 oz to 14 oz at a steady $4.99 raised the unit price from $4.99 / 16 = $0.312 per oz to $4.99 / 14 = $0.356 per oz, a 14.1 percent increase that never appears as a price change. To detect shrinkflation, save receipts and recalculate the unit price every three to six months on staples you buy regularly. The total price may look constant while the cost per ounce climbs steadily.

How do you calculate unit price for a buy-one-get-one (BOGO) offer?

For a buy-one-get-one-free offer, the effective quantity doubles while the total price stays the same, so divide the original price by twice the original quantity. A BOGO on $5.99 / 12 oz cereal becomes $5.99 / 24 oz = $0.250 per oz, half the regular $0.499 per oz. For buy-one-get-one-50-percent-off, total price for two items becomes Price + (Price x 0.5) = 1.5 x Price, and total quantity is 2 x Quantity, so unit price = 1.5 x Price / (2 x Quantity) = 0.75 x regular unit price, a 25 percent savings rather than 50 percent.

How do I calculate the price per ounce of an item?

Divide the total price by the number of ounces in the package: price per ounce = total price / ounces. For example, a 24 oz jar that costs $4.80 works out to $4.80 / 24 = $0.200 per ounce. Always compare items in the same unit (ounces) so you can spot the true better buy regardless of package size.

How do you figure out the price per pound from an ounce price?

Multiply the price per ounce by 16, since one pound equals 16 ounces. Or divide total price by package weight in pounds. A 12 oz bag at $3.60 costs $3.60 / 12 = $0.30 per ounce, which is $0.30 x 16 = $4.80 per pound. Converting everything to per-pound makes meat, coffee, and produce easy to compare.

How do I calculate price per gram and per kilogram?

Divide total price by grams for price per gram, or by kilograms for price per kg. A 500 g package at $4.00 is $4.00 / 500 = $0.008 per gram. To get per kilogram, divide by weight in kg: $4.00 / 0.5 kg = $8.00 per kg. Per-gram pricing is handy for spices, supplements, and imported goods.

How do you calculate the price per 100g shown on European labels?

Divide the total price by the weight in grams, then multiply by 100. For a 500 g item costing $4.00: ($4.00 / 500) x 100 = $0.80 per 100g. The per-100g figure is the EU standard unit-pricing format and lets you compare two products of different gram weights side by side instantly.

How do I calculate the price per liter of a drink?

Divide the total price by the number of liters. A 2-liter bottle at $3.18 is $3.18 / 2 = $1.59 per liter. For milliliters, divide price by mL instead. Comparing per liter is the fastest way to judge soda, juice, water, and detergent, because identical liquids often come in oddly sized bottles.

How do you calculate the price per gallon for juice or milk?

Divide total price by gallons, or convert from ounces: there are 128 fluid ounces in a US gallon. A 64 oz jug at $2.56 equals ($2.56 / 64) x 128 = $5.12 per gallon. Putting both options in price-per-gallon terms removes the confusion of comparing quarts, half-gallons, and gallons.

How do I calculate the unit price for items sold by count, like a 24-pack?

Divide the total price by the number of pieces: price per count = total price / quantity. A 24-pack priced at $7.20 is $7.20 / 24 = $0.300 per item. Use per-count pricing for things measured in pieces (eggs, batteries, soda cans, paper towels) where weight or volume is less meaningful than the number you get.

How do you calculate price per square foot for flooring or paint?

Divide the total price by the total square feet the product covers: price per sq ft = total price / coverage area. If two gallons of paint cost $60 and cover 700 sq ft, that is $60 / 700 = $0.086 per square foot. This lets you compare flooring, tile, and paint products that quote coverage instead of size.

How do I calculate the per-unit price after a percent-off discount?

First apply the discount to the price, then divide by the size. For 40 oz at $8.00 with 25% off: discounted price = $8.00 x (1 - 0.25) = $6.00, then $6.00 / 40 = $0.150 per ounce. Always discount the total before dividing, never divide first, or you will misjudge which deal is actually cheaper.

How do I find the real unit price after an instant rebate?

Subtract the rebate from the price, then divide by the package size: unit price = (price - rebate) / units. A 48 oz item at $12.00 with a $3.00 instant rebate costs ($12.00 - $3.00) / 48 = $9.00 / 48 = $0.1875 per ounce. Instant rebates lower your real cost immediately, so include them before comparing against full-price options.

How do you calculate break-even price per unit for a business?

Break-even price per unit = variable cost per unit + (total fixed costs / units produced). If variable cost is $4 per unit, fixed costs are $5,000, and you make 1,000 units: $4 + ($5,000 / 1,000) = $4 + $5 = $9 per unit. Selling above $9 produces a profit; selling below it means a loss at that volume.

How do I calculate a target or standard price per unit from a margin?

Target price per unit = cost per unit / (1 - desired margin). For a $10 cost and a 20% target margin: $10 / (1 - 0.20) = $10 / 0.80 = $12.50 per unit. This margin-based method (dividing, not just adding a percent) ensures the 20% is measured against the selling price, which is how standard gross margin is defined.

How do you calculate a weighted-average price per unit?

Multiply each price by its quantity, add those amounts, then divide by total quantity. If you bought 300 units at $1.20 and 200 at $1.50: [(300 x $1.20) + (200 x $1.50)] / 500 = ($360 + $300) / 500 = $660 / 500 = $1.32 per unit. A weighted average reflects how much you bought at each price, unlike a plain average.

How do I calculate my electricity unit price (cost per kWh)?

Divide your total electricity charge by the kilowatt-hours used: cost per kWh = total bill / kWh. If a bill shows $86.40 for 540 kWh, that is $86.40 / 540 = $0.160 per kWh. Use the energy charge only, excluding fixed service fees, for the cleanest rate. You can also try these <a href="https://greencalcs.com" target="_blank" rel="noopener">electricity cost-per-kWh calculators</a>.

How do I calculate unit price in Excel with a formula?

Put the total price in one cell and the package size in another, then divide. If price is in A2 and ounces in B2, type =A2/B2 in C2 to get price per ounce. For example, $6.49 / 24 returns $0.2704. Copy the formula down a column to rank many products, then sort the result ascending to find the lowest unit price.

How do I figure out the unit price on a buy-two-for-one bundle?

Add up what you actually pay, then divide by the total items you receive. In a 2-for-$5 deal where you take both, the unit price is $5.00 / 2 = $2.50 each. If a promo gives you 3 items for the price of 2 at $5.00, divide by 3: $5.00 / 3 = $1.67 each. Always count every item you carry home.

Guides & articles

• How to calculate unit price: the simple way to find the best deal
• How to Calculate Price Per Unit: Formula, Conversions, and Worked Examples
• How to Find the Better Buy Using Unit Price

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