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Unit Price Comparator

Compare products by price-per-unit to find the option that's genuinely cheaper.

Runs in your browserNo sign-up required

Small but Genuinely Useful

A bigger package isn't always the better deal — this tool normalizes price against weight, volume, length, or a plain item count, so you can compare products listed in completely different sizes and units and see exactly which one is actually cheaper per unit.

How to Use This Tool

  1. 1Choose what you're comparingWeight, volume, length, or a plain count (like a pack of items).
  2. 2Enter each product's price and quantityDifferent units are fine — 500g vs 1kg converts automatically.
  3. 3Add more products to compareCompare 2, 3, or more options at once.
  4. 4Read the ranked resultThe cheapest option is highlighted, with how much more expensive the others are.

Good to Know

  • You can mix units freely — comparing a 500g pack against a 1kg pack works correctly since quantities are converted to a common unit before comparing.
  • The "bigger pack" isn't always cheaper per unit — this tool exists specifically to catch the cases where it isn't.
  • Count mode works for anything sold as a pack — tissues, diapers, sheets of paper — where price-per-item is what actually matters.
  • Nothing you enter is saved or sent anywhere — it's a quick, private comparison.

Frequently Asked Questions

Can I compare products in completely different units, like grams vs. pounds?

Yes — pick the measure (weight, volume, or length) and each product can use its own unit; everything is converted to a shared standard unit before comparing.

What does "Count" mode do?

It compares price divided directly by quantity, for anything sold as discrete items or a pack size rather than a weight or volume — like a 12-pack vs. a 24-pack.

Why would the smaller package ever be cheaper per unit?

Pricing doesn't always scale linearly with size — promotions, different brands, or bulk-packaging costs can sometimes make a smaller size the better per-unit deal, which is exactly the kind of thing this tool catches.

Is this the same as the Unit Converter?

It uses the same underlying conversion math, but is purpose-built for this specific shopping comparison rather than general unit conversion.