Everyday Life
Compare prices by unit
Two packages can carry different sizes and different units. Enter each price and package size to compare by ounce, US fluid ounce, or item. Weight and volume stay separate, so an ounce by weight is never treated as a fluid ounce. Sample prices are illustrative; replace them with the shelf prices you see.
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Price Per Ounce / Unit Price Comparison Calculator
Compare grocery package prices by weight, volume, or count using the same unit basis.
Inputs used
Results
- Product A: $2.49 ÷ 16.0000 oz = $0.1556/oz.
- Product B: $3.50 ÷ 24.0000 oz = $0.1458/oz.
- Compare before display rounding; unit prices are shown to 4 decimal places.
Additional notes
Your estimate
Results
- Product A: $2.49 ÷ 16.0000 oz = $0.1556/oz.
- Product B: $3.50 ÷ 24.0000 oz = $0.1458/oz.
- Compare before display rounding; unit prices are shown to 4 decimal places.
The math, plainly
How it works
- 01
Enter each package's shelf price, size, and printed unit. Use the same price basis for both products.
- 02
Each package is converted to a common basis: weight to ounces, volume to US fluid ounces, and count to items. Weight ounces and fluid ounces are different dimensions; this calculator never estimates ingredient density or converts weight into volume.
- 03
Divide package price by its normalized size. The lower price is selected before rounding; displayed unit rates round to four decimal places.
Try a real scenario
Two sizes, one price basis
InputsIllustrative inputs: $2.49 for 16 oz and $3.50 for 24 oz, both by weight.
ResultProduct A: $0.1556/oz. Product B: $0.1458/oz. Product B is lower by $0.0098/oz.
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