Skip to main content

How to Calculate Unit Price

What is Unit Price?

A unit price calculator computes price per unit (per kg, per litre, per item) to enable fair value comparison between differently sized products.

Formula

Price per unit = Total price / Quantity (in same units)

Step-by-Step Guide

  1. 1Price per unit = Total price / Quantity (in same units)
  2. 2Compare only when units match (both kg, both litres, etc.)
  3. 3UK/EU retailers must show unit price by law
  4. 4Consider shelf life for perishables vs savings on large packs

Worked Examples

Input
250g for £0.89 vs 750g for £2.49
Result
Per 100g: 250g=35.6p; 750g=33.2p — 750g is 7% cheaper

Frequently Asked Questions

What is Unit Price?

A unit price calculator computes price per unit (per kg, per litre, per item) to enable fair value comparison between differently sized products. Use this calculator for accurate, instant results.

How accurate is the Unit Price calculator?

The calculator uses the standard published formula for unit price. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Unit Price calculator use?

This calculator works with kilograms, inches, litres. You can enter values in the units shown — the calculator handles all conversions internally.

What formula does the Unit Price calculator use?

The core formula is: Price per unit = Total price / Quantity (in same units). Each step in the calculation is shown so you can verify the result manually.

Ready to calculate? Try the free Unit Price Calculator

Try it yourself →

Settings

PrivacyTermsAbout© 2026 PrimeCalcPro