Use the Unit Price Comparator
Free unit price comparator. Enter the price and size of two or more products (weight, volume or item count) and instantly see the real price per 100g.
- Free to use
- No signup
- Nothing to install
- Runs in your browser
Your input
The actionA real example, step by step
Real data entered into the Unit Price Comparator, one screenshot per step. Nothing is mocked up.
Open the tool
The Unit Price Comparator opens ready to use, nothing to install or sign up for.
Enter your data
Real input used here: e.g. Store brand 750 g Store brand — 750 g; Price 3.49; Quantity 750.
Press Add product
The Unit Price Comparator shows the result straight away, below the same form.
What is the Unit Price Comparator?
Stores rarely make it easy to compare a 750 g bag against a 2 kg bag, or a 500 ml bottle against a 1 L bottle, at a glance — and the bigger pack is not automatically the better deal. This comparator lets you enter the price, quantity and unit (grams, kilograms, ounces, pounds for weight; millilitres, litres, fluid ounces, gallons for volume; or a simple item count for multi-packs) for two or more products, converts everything to a common base, and ranks every option by its true price per 100 g, per 100 ml or per item.
The result table highlights the best-value option and shows exactly how much more every other option costs as a percentage, so you can see at a glance whether the family-size pack, the store brand or the multi-buy deal is really saving you money. Everything is calculated instantly in your browser as you type — add as many products as you like and switch between weight, volume and count categories for different kinds of shopping comparisons.
3 steps to your result
Open the tool and follow along. Nothing to install.
What you get
Compares grams/kg/oz/lb, ml/L/fl oz/gal, or item packs.
Add as many options as you are comparing.
Highlights the cheapest option and the % premium on the rest.
Runs in your browser; nothing is sent anywhere.
AZRS tools are free to open and use.
It opens in your browser, so there is nothing to download.
Used for
Pick one to see how it fits.
How it compares
A plain look at this tool next to the usual alternative.
| This calculator | Desktop software | |
|---|---|---|
| Install | Nothing to install | Usually an app or program to install |
| Account | No signup | Depends on the product |
| Cost | Free to use | Free or paid, depends on the product |
| Where it runs | In your browser tab | On your computer |
Questions people ask
Does this account for quality differences?
No — it only compares price per unit of quantity. Two products at the same unit price can still differ in quality or ingredients.
Can I compare items in different currencies?
Enter the numeric price only; the comparison works in any currency as long as every product uses the same one.
What if a product size is given per item, like eggs or diapers?
Choose the Count category and enter the item quantity (e.g. 12) — the tool then compares price per item.
Why do you convert oz and lb to grams?
So that products measured in imperial and metric units can be compared fairly on the same scale.
Is my shopping list stored anywhere?
No. Everything you enter stays in your browser and disappears when you leave the page.
More free tools
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Try the Unit Price Comparator now
Compare grocery and shopping prices by weight, volume or item to find the real best value. Free to use.
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