Product A
Multipack & discount
Enter the price of the entire pack; quantity is for one item. A single item uses 1.
Product B
Multipack & discount
Enter the price of the entire pack; quantity is for one item. A single item uses 1.
Unit prices
This scales unit prices to equal quantities, not to whole purchasable packs. Percentages and displayed values are rounded; it is not a checkout total.
Use the same currency for both prices. No currency conversion.
Use a decimal dot or comma, up to 6 decimal places; no thousands separators.
Tip: units within the same family convert automatically (g↔kg, ml↔L, oz↔lb).
Calculations stay in this tab. Only language and theme are saved. Sharing deliberately includes the comparison in a link.
Useful details
How is the winner calculated?
Discounted total price is divided by total quantity in a common unit. Exact integer cross-products choose the winner; rounding is only for display. A free product is allowed, but zero quantity is not.
How do multipacks and discounts work?
Price is the entire pack price before the percentage discount. Total quantity is quantity per item × items per pack. Only one discount is applied; shipping, deposits, coupons and tax differences are not added.
Can I compare currencies or grams with milliliters?
No currency conversion is performed. Use the same currency and comparable products. Mass, volume and count are separate; oz means a mass ounce, not a fluid ounce.
Does this tool work offline?
After a successful initial online visit and service-worker installation, the app works offline in supported browsers.
Is my data private?
Calculations stay in this tab. Only language and theme are saved. Sharing deliberately includes the comparison in a link.