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Percentage calculators

What is 20% off 100?

Answer 80

After 20% off 100, the price is 80.

Typical results show up to two decimal places; ≈ marks rounding. Very small or large results use up to three significant digits.

How to calculate it

100 × (1 − 20 ÷ 100) = 80

  1. Divide the discount, 20, by 100.
  2. Subtract that fraction from 1 to find the portion of the price you pay.
  3. Multiply by the original price, 100, to get 80.

This is the price after the discount, excluding taxes and shipping. Currency-specific rounding may change the final amount charged.

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