About unit price
This unit price calculator compares products by their price per unit, so you can quickly see which is the best value. Enter the price and quantity for each option and the cheapest per-unit price is highlighted. It runs in your browser.
How Unit Price works
How to use it
- Enter each item's price and quantity (units, grams, ml — anything).
- Read the price per unit for each.
- The best value is highlighted in green.
How it works
Price per unit is simply price ÷ quantity. As long as you use the same unit for each item, the lowest number is the best value — regardless of pack size or special offers.
Worked example
Item A is 4.50 for 1,500 g → 4.50 ÷ 1500 = 0.0030 per gram. Item B is 3.20 for 1,000 g → 0.0032 per gram. Item A is cheaper per gram, so it is the better value despite the higher sticker price.
Common uses
- Compare grocery prices
- Find the best bulk-buy value
- Compare pack sizes
- Check price per gram or ml
- Avoid misleading deals
- Shop on a budget
- Compare unit costs
- Decide between two products
Frequently asked questions
How do I compare unit prices?
Enter each item price and quantity; the cheapest per unit is highlighted.
What units can I use?
Any — just use the same unit for each item.
How is price per unit found?
Price divided by quantity.
Can I compare more than two?
Yes — add as many items as you like.
Is my data uploaded?
No — it calculates in your browser.
Does a bigger pack always win?
Not always — this shows the true per-unit cost.
Is it free?
Yes — completely free with no sign-up.