Unit Price Comparison Calculator
Which package is the better deal per ounce, pound, liter or item?
Spec sheet
unit_price · v1.0.0Price ÷ quantity in a common unit
- 01
q_B in A's unit = convert(q_B, unit_B → unit_A) - 02
unit price = price ÷ quantity
- Weight and volume cannot be compared with each other (e.g. fl oz vs oz) without a density.
- US gallons.
- Dimension-checked unit conversion (NIST SP 811 factors)standard
Worked example
computed by the same formula12 oz for $3.00 vs 1 lb for $3.50
- Item A price
- 3
- Item A size
- 12
- Item A unit
- ounce (oz)
- Item B price
- 3.5
- Item B size
- 1
- Item B unit
- pound (lb)
- Better value
- Item B
- Item A price per unit
- $0.25
- Item B price per unit (same unit)
- $0.22
- Cheaper by
- 12.5 %
- Compared per
- oz
- 1. Item B size in oz = 16
Questions
How is the unit price comparison calculated?
›
Price ÷ quantity in a common unit. q_B in A's unit = convert(q_B, unit_B → unit_A) · unit price = price ÷ quantity
Example: 12 oz for $3.00 vs 1 lb for $3.50?
›
Better value: Item B; item a price per unit: $0.25.
What does this calculator not cover?
›
Weight and volume cannot be compared with each other (e.g. fl oz vs oz) without a density. US gallons.
Where do the numbers come from?
›
Sources: Dimension-checked unit conversion (NIST SP 811 factors). The formula is versioned (unit_price v1.0.0) and covered by automated tests.
Is my data stored?
›
No. The calculation runs in your browser and nothing is sent unless you choose to save a shareable link.
Also searched asunit price calculator · price per ounce · which is cheaper per pound · compare prices by size · best value calculator