What is 20% of 100?

20% of 100 = 20

Formula: 100 × 20 ÷ 100 = 20. Or work it out as 20 hundredths: 1% of 100 is 1, so 20% is 1 × 20 = 20.

• 100 − 20% = 80 (for example a 20% discount)
• 100 + 20% = 120 (for example adding 20% tax or a tip)
• 20 is 20% of 100

Any other numbers? Use the percentage calculator, the discount calculator or the percent change calculator.

Other percentages of 100

20% of other numbers

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