Unit Price Calculator
Find the best value by comparing unit prices. Enter the price and quantity of two or more products to see which has the lowest cost per unit. Great for grocery shopping and bulk buying decisions.
Reviewed by the SparkCalc editorial team
How We Calculate This
Unit price = Total price ÷ Quantity. The lowest unit price represents the best value. Savings calculated as the difference per 100 units between highest and lowest unit prices.
Sources: NIST — Handbook 130, Uniform Laws and Regulations (Uniform Unit Pricing Regulation) · NIST — Special Publication 1181, The Unit Pricing Guide: A Best Practice Approach · NIST — Best Practices for Uniform Unit Pricing (SP 1181 and Handbook 130 update)
Frequently Asked Questions
Is bigger always cheaper per unit?
Not always! While bulk sizes often have lower unit prices, sometimes smaller sizes go on sale or have promotions that make them the better deal. Always compare unit prices.
How do stores calculate unit prices?
Stores typically show price per ounce, pound, or count on shelf tags. This calculator lets you compare when stores use different units or don't display unit prices.
Should I always buy the lowest unit price?
Consider: Will you use it all before it expires? Do you have storage space? Is the upfront cost within budget? Sometimes paying more per unit for a smaller size makes sense.
Related Calculators
You might also find these calculators helpful: Discount Calculator, and Percentage Calculator.
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