Unit Price Calculator - Compare Cost Per Unit & Find Best Value

Compare unit prices and find the best value. Calculate cost per unit, per kg, per liter, and more with our free calculator.

Unit Price Comparison

About Unit Price Calculator

The unit price calculator helps you compare the cost per unit of different products to find the best value. This is essential for smart shopping, whether you're comparing different package sizes, brands, or stores.

How to Use Unit Price Comparison

  1. Enter the product name for easy identification
  2. Input the total price of each product
  3. Enter the quantity (weight, volume, or count)
  4. Select the appropriate unit (g, kg, ml, l, etc.)
  5. Compare the calculated unit prices
  6. Choose the product with the lowest unit price for best value

Common Shopping Scenarios

  • Bulk vs. Regular Size: Compare large packages vs. smaller ones
  • Brand Comparison: Compare name brands vs. store brands
  • Store Comparison: Compare prices across different retailers
  • Sale Items: Determine if sale prices offer real value
  • Different Package Sizes: Find the most economical size

Money-Saving Tips

  • Always check unit prices, not just total prices
  • Consider storage space and expiration dates for bulk purchases
  • Compare similar products with the same units (per kg, per liter)
  • Factor in quality differences, not just price
  • Use unit prices to evaluate if sales are genuine bargains
  • Consider your actual usage to avoid waste

Real-World Examples

Example: Breakfast Cereal

  • Small box: £3.99 for 375g = £0.0106 per gram
  • Large box: £5.99 for 750g = £0.0080 per gram
  • Result: Large box offers 24% better value

Example: Laundry Detergent

  • Brand A: £8.99 for 1.5L = £5.99 per liter
  • Brand B: £12.99 for 2.5L = £5.20 per liter
  • Result: Brand B offers 13% better value despite higher upfront cost