Unit price calculator
Which pack is really cheaper?
Big bag or small one, multipack or “buy 3, pay 2”? Type in price and size of up to six offers. Unitwise shows the price per kg, liter, oz or lb, marks the winner and tells you how much you save – with one hand, right at the shelf.
- Compare for free, without limits
- Deals and multipacks included
- No account, works offline
Coming soon to Google Play and the App Store.

Deals
“Buy 3, pay 2” – worth it?
Tap “Deal” and pick 3 for 2, 2nd at half price or a percentage off. Unitwise counts everything you take home and compares it fairly with the other offers.
The card also tells you what you actually pay and for how much – so a deal never tricks you into buying more than you need.

Multipacks
Six-pack or big bottle?
Enter one can and how many are in the pack – the price is for the whole pack. Metric and US units mix freely: 12 fl oz cans against a 2-liter bottle is no problem.
Weight against volume can’t be compared – Unitwise says so instead of guessing.

The big pack
is not always the cheaper one.
In our example, three 5.3 oz yogurt cups on “buy 3, pay 2” cost 5.4% less per ounce than the 32 oz tub. You only see that when you do the math – Unitwise does it in a second.
Price book · Ad-free
Is this really a good price?
Save your best price for butter, coffee or diapers with one tap. Next time, Unitwise shows you right away whether today’s offer is above or below it.
Part of Ad-free, together with the history. Comparing itself stays free.

History · Ad-free
Compared once, remembered.
Save comparisons for the things you buy every month and reopen them with one tap – detergent, coffee, pet food.
Everything stays on your phone. No account, no cloud.

Try it here
Unit price calculator
Enter up to four offers. Everything is calculated in your browser – nothing is sent anywhere. The app adds deals, multipacks, a price book and more.
Same math as the app: price ÷ amount, shown per kg and 100 g, per liter and 100 ml – or per oz, lb, fl oz and gallon for US units.
The difference
From guessing to knowing.
- Mental math with 375 g vs. 1 kgPrice per kg, l, oz or lb in a second
- Shelf labels per 100 g here, per kg thereEvery offer on the same basis
- “3 for 2” deals that only look goodDeals and multipacks counted fairly
- A calculator app, a pen, a guessWinner marked, savings in percent
- Forgetting last month’s best priceBest prices saved in your price book
Small app. Saves money every week.
Metric or US – automatically
In the US you see prices per oz and lb, elsewhere per kg and liter. Switch any time – and choose kg or 100 g as your main basis.
2 to 6 offers
Big, small, store brand, name brand – compare up to six at once. The winner is highlighted, the rest show how much more they cost.
Built for one hand
Big number fields, a numeric keypad, “next” jumps to the next field and a short vibration when the winner changes.
Money saved, in plain numbers
Not just “cheaper”: Unitwise shows the difference in percent and how much money you save on the same amount.
Private and offline
No account, no cloud. Comparisons, history and price book stay on your phone and work without a connection.
Ad-free when you want
The free version shows one small banner. Ad-free – as a yearly subscription or a one-time purchase – removes it and adds history and price book.