Unit Price Calculator
Compare two options across Weight, Volume, Items, Items with weight, or Items with volume. Results update instantly.
Option A
Option B
Which one is cheaper?
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You save
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Comparison unit
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Step-by-step derivation
Formula
unit price = total price ÷ quantity
Option A
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Option B
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Reference table & sources
Common unit conversions used by this calculator.
| Type | Unit | To base (g or mL) |
|---|---|---|
| Weight | 1 kg | 1000 g |
| Weight | 1 lb | 453.59237 g |
| Weight | 1 oz | 28.349523125 g |
| Volume | 1 L | 1000 mL |
| Volume | 1 US fl oz | 29.5735295625 mL |
| Volume | 1 US cup | 236.5882365 mL |
| Volume | 1 US pint | 473.176473 mL |
| Volume | 1 US quart | 946.352946 mL |
| Volume | 1 US gallon | 3785.411784 mL |
Sources: consumer math texts on unit price; standard NIST/US customary & SI unit definitions; general reference on price per unit.
Tip: Change a unit (e.g., oz → lb) and the value converts to keep the same quantity.