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Discount calculator

Calculate the price after a discount and the amount saved.

One discount from 0 to 100%. The original price is rounded to the chosen precision, then the saving; the sale price is their difference. Example: 100 at 20% off → 80, saving 20. Successive discounts are not automatically added.

Both dots and commas are accepted as decimal separators.

Your inputs stay in your browser.

Method and assumptions

Method version 1.0.0 · Updated

Apply a discount

Formula: Saving = price × rate / 100; sale price = price − saving

One discount from 0 to 100%. The original price is rounded to the chosen precision, then the saving; the sale price is their difference. Example: 100 at 20% off → 80, saving 20. Successive discounts are not automatically added.

price
Original price
rate
Discount (%)
precision
Money decimal places

All amounts use the same currency, without conversion. Choose 0, 2 or 3 decimal places for your needs. Rounded to nearest, ties up.

Calculate with code

These short examples use the same inputs and core calculation as this tool. Adapt validation and formatting to your application.

JavaScript
const price = 80, rate = 15;
const salePrice = price * (1 - rate / 100);
console.log(salePrice); // 68
TypeScript
const price = 80, rate = 15;
const salePrice: number = price * (1 - rate / 100);
console.log(salePrice); // 68
Python
price, rate = 80, 15
print(price * (1 - rate / 100))  # 68.0
Java
double price = 80, rate = 15;
System.out.println(price * (1 - rate / 100)); // 68.0
C#
double price = 80, rate = 15;
Console.WriteLine(price * (1 - rate / 100)); // 68