256 Tools

Unit Price Comparator

Item 1
Price per unit0.6+20% more
Item 2Best value
Price per unit0.5

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Buying the bigger pack isn't always cheaper. Enter the price and quantity (or size) of each product and this tool works out the price per unit, highlights the best value, and shows how much more the others cost. Add as many items as you like. Everything runs in your browser.

How to use

  1. Enter the price and quantity for each product.
  2. Add more items to compare as needed.
  3. See the price per unit and which is the best value.

How it works

For each item the price per unit is simply the price divided by the quantity — so a 500 g pack at 300 costs 0.6 per gram, while a 1000 g pack at 500 costs 0.5 per gram. The lowest price per unit is marked as the best value, and each other item shows how many percent more it costs per unit, so the cheaper option is clear even when pack sizes differ.

Price divided by quantity gives the price per unit, and the lowest wins.price÷quantity=unit price

Features

Price per unit

Compares items fairly regardless of pack size.

Best value highlight

The cheapest per unit is marked automatically.

Percent more

See how much pricier each other option is.

Private & instant

All math runs in your browser; nothing is uploaded.

When to use it

Groceries

Compare pack sizes to find the cheapest per gram or ml.

Bulk buying

Check whether the big pack is really better value.

Subscriptions

Compare plans by price per month or per item.

Travel

Compare prices when quantities are listed differently.

Notes

  • Use the same unit (g, ml, count) across items for a fair compare.
  • Quantity must be greater than zero.
  • Add or remove items freely.
  • All calculations run on your device; nothing is uploaded.

FAQ

How is the price per unit found?
It's the price divided by the quantity, so items with different pack sizes can be compared fairly.
Do the units have to match?
Yes. Use the same unit (grams, ml, count) for every item, since the tool only divides price by quantity.
What does '+% more' mean?
How much more each item costs per unit compared with the cheapest option.
How many items can I compare?
As many as you like — add rows for each product.
Is my data uploaded?
No. Everything is calculated in your browser and nothing leaves your device.

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