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How to Calculate Price Per Unit

What is Price Per Unit?

A price per unit calculator finds the cost per unit to compare products of different sizes or quantities. It is the only fair way to compare value across different pack sizes.

Formula

Price per unit = Total price / Quantity

Step-by-Step Guide

  1. 1Price per unit = Total price / Quantity
  2. 2Use the same unit for all items being compared
  3. 3UK and EU supermarkets must display unit price by law
  4. 4Consider whether you will use the full quantity before expiry

Worked Examples

Input
300ml for £1.20 vs 500ml for £1.85
Result
Per 100ml: 300ml = 40p; 500ml = 37p — 500ml is better value

Frequently Asked Questions

What is Price Per Unit?

A price per unit calculator finds the cost per unit to compare products of different sizes or quantities. It is the only fair way to compare value across different pack sizes

How accurate is the Price Per Unit calculator?

The calculator uses the standard published formula for price per unit. 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 Price Per Unit calculator use?

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

What formula does the Price Per Unit calculator use?

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

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