Do stacked discounts add up?

No — a 30 % discount followed by 10 % is 37 % off, not 40 %, because the second discount applies to the already reduced price. The stacked discount calculator shows the true total.

How should I compare unit prices?

Divide the price by the quantity in a common unit (per 100 g, per litre). The unit price calculator does this for two or more products at once.

Calculators

Shopping & Everyday

Discounts, tips, bills, unit prices and daily costs. · 8 tools

Small everyday sums, done properly: what a 30 % discount plus a 10 % coupon really costs, how to split a bill fairly, whether the large pack is actually cheaper per litre, and what a subscription costs per day.

Budget CalculatorTrack income and expenses by category. Savings suggestions.Cost Per Day CalculatorCalculate the real cost per day or per use of a purchase.Discount Calculator — Sale Price & SavingsCalculate the discounted price and savings from a percentage discount.Shopping List CalculatorCreate a shopping list with prices, track budget and check off items.Split Bill CalculatorSplit a restaurant bill evenly among the group and add an optional tip.Stacked Discount CalculatorCalculate the final price when two successive discounts are applied.Tip CalculatorPopularCalculate tip and split the bill among multiple people.Unit Price CalculatorCalculate a product's unit price (€/kg, €/L or €/pc) and compare package sizes.

Shopping & Everyday

Frequently asked questions