Price Per Ounce CalculatorPrice per oz, per pound, per 100 g & per fl oz
Price per ounce = price ÷ ounces. A 12 oz bag for $4.99 costs $0.416 per ounce ($6.65 per pound). A 1.5 lb (24 oz) bag for $8.49 costs $0.354 per ounce, about 15% cheaper.
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- Two-item compare
- Target price check
- Exact NIST conversions
By Manzoor Ahmad · 13+ years of web development & SEO · Updated October 25, 2026Price per ounce
How to Calculate Price Per Ounce
Price per ounce = Total price ÷ Total ounces. A 12 oz bag of coffee for $4.99 costs $4.99 ÷ 12 = $0.416 per ounce. If the package is labeled in pounds, multiply by 16 first: a 1.5 lb bag is 24 oz, so $8.49 ÷ 24 = $0.354 per ounce — about 15% cheaper.
Price Per Ounce, Pound and Gram Formulas
Price per ounce
$/oz = Price ÷ Ounces$4.99 ÷ 12 oz = $0.416/oz.
Price per pound
$/lb = $/oz × 16$0.416 × 16 = $6.65/lb.
Price per 100 grams
$/100 g = $/oz ÷ 28.3495 × 100$0.416 ÷ 28.3495 × 100 = $1.47/100 g.
Price per fluid ounce
$/fl oz = Price ÷ Fluid ouncesA 64 fl oz bottle for $3.99 is $0.062/fl oz.
Price Per Ounce to Price Per Pound and Per 100 g
Useful when one store labels by the ounce and another by the pound or by grams.
| Per ounce | Per pound | Per 100 g | Per kg |
|---|---|---|---|
| $0.05/oz | $0.80/lb | $0.18/100 g | $1.76/kg |
| $0.10/oz | $1.60/lb | $0.35/100 g | $3.53/kg |
| $0.15/oz | $2.40/lb | $0.53/100 g | $5.29/kg |
| $0.20/oz | $3.20/lb | $0.71/100 g | $7.05/kg |
| $0.25/oz | $4.00/lb | $0.88/100 g | $8.82/kg |
| $0.30/oz | $4.80/lb | $1.06/100 g | $10.58/kg |
| $0.40/oz | $6.40/lb | $1.41/100 g | $14.11/kg |
| $0.50/oz | $8.00/lb | $1.76/100 g | $17.64/kg |
| $0.75/oz | $12.00/lb | $2.65/100 g | $26.46/kg |
| $1.00/oz | $16.00/lb | $3.53/100 g | $35.27/kg |
| $1.50/oz | $24.00/lb | $5.29/100 g | $52.91/kg |
| $2.00/oz | $32.00/lb | $7.05/100 g | $70.55/kg |
Common Package Sizes in Ounces, Pounds and Grams
| Ounces | Pounds | Grams |
|---|---|---|
| 8 oz | half a pound | 227 g |
| 12 oz | 0.75 lb | 340 g |
| 16 oz | 1 lb | 454 g |
| 24 oz | 1.5 lb | 680 g |
| 32 oz | 2 lb | 907 g |
| 48 oz | 3 lb | 1.36 kg |
| 64 oz | 4 lb | 1.81 kg |
Ounces vs Fluid Ounces
Ounce (oz)
A unit of weight: 1 oz = 28.35 g. Used for dry foods like cereal, coffee, snacks and meat.
Fluid ounce (fl oz)
A unit of volume: 1 US fl oz = 29.57 ml. Used for drinks, detergent, shampoo and oil.
Comparing the two
Only compare weight with weight and volume with volume. The calculator flags a mismatch so you don’t compare a weight to a volume by mistake.
Comparing three or more products, or mixing packs and counts? Use the Unit Price Calculator.
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Price Per Ounce Calculator FAQs
Divide the price by the number of ounces. A 12 oz item for $4.99 costs $4.99 ÷ 12 = $0.416 per ounce.
Divide the price per pound by 16, because there are 16 ounces in a pound. $6.40 per pound is $0.40 per ounce.
Multiply by 16. $0.35 per ounce is $5.60 per pound.
Divide the grams by 28.35 to get ounces, then divide the price by the ounces. A 500 g pack for $4.50 is 17.64 oz, or $0.255 per ounce.
An ounce measures weight (28.35 g) and a fluid ounce measures volume (29.57 ml in the US). Compare products using the same kind of unit.
There are 16 ounces in one pound, and one pound equals about 453.6 grams.
Usually, as long as you will use it all. A large pack that spoils or goes unused can cost more per ounce you actually eat or use.
Multiply the pack count by the size of each item to get total ounces. A 6-pack of 12 fl oz cans is 72 fl oz.
It varies by quality and brand. Set your own benchmark in the target price field, and the calculator tells you the most to pay for any bag size.
Yes. Enter the weight in pounds and the calculator shows the price per ounce, per pound, per 100 g and per kilogram.
Use the Unit Price Calculator, which ranks up to six products and handles count-based items too.
Yes. It is free, needs no sign-up and runs entirely in your browser.
Manzoor Ahmad
Founder of DexoCalc · 13+ years of web development & SEO experience
Manzoor built this price per ounce calculator for grocery and household shopping. All conversions use exact NIST factors: 1 oz = 28.349523125 g, 1 lb = 16 oz and 1 US fl oz = 29.5735 ml.
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Last reviewed and updated: October 25, 2026
Sources & References
- National Institute of Standards and Technology — Unit conversion: SI and U.S. customary units
- National Institute of Standards and Technology — NIST Handbook 130: Uniform Unit Pricing Regulation
- U.S. Food and Drug Administration — Food labeling guide: net quantity of contents
Disclaimer: results are estimates for planning and comparison. Store policies, coupon terms and local tax rules vary, so your receipt may differ. This calculator is not financial, legal or tax advice.