Unit Price Comparison
Find the best value by price per unit.
How to use
- 1 Set the unit name you are comparing (g, ml, item, sheet…).
- 2 Enter a label, price and quantity for each product.
- 3 Add more items with the Add item button.
- 4 Read the ranked list — the cheapest per unit is marked Best value.
- 5 Copy the results if you want to keep them.
About Unit Price Comparison
The Unit Price Comparison tool settles the everyday supermarket question: is the big pack really cheaper, or is the small one the better buy? Sticker prices alone are misleading because each option comes in a different size, so the only fair way to compare is the price per single unit — per gram, per millilitre, per sheet or per item.
Enter the price and the quantity for each product and the tool instantly divides one by the other to get the unit price, then ranks every option from cheapest to most expensive.
The best-value item is highlighted, and each other option shows how much more it costs per unit as a percentage, so you can see at a glance whether the difference is trivial or significant.
You can add as many items as you like and name them however you want — "Brand A 500g", "Store own 1kg", "Bulk 5L" — and you choose the unit label so the results read naturally.
It works for anything sold by size: food, drinks, cleaning products, paper goods, building materials, even cost-per-dose for supplements.
All the maths runs locally in your browser; nothing you type is uploaded or stored, and the tool keeps working offline once loaded.
It is a quick, private way to stop overpaying for the bigger box.
FAQ
What counts as the quantity?
It is the size the price buys, measured in your chosen unit — for example 500 for a 500g pack, or 6 for a 6-pack. The tool divides price by quantity to get the unit price.
What does the percentage next to an item mean?
It shows how much more that item costs per unit compared with the cheapest option, so +20% means it is one-fifth more expensive per gram or item.
Can different items use different units?
For a fair comparison all items should use the same unit. Convert sizes to a common unit first, then enter them together.