What is 20% of 40?
How it is worked out
- Write the percentage as a decimal
20% ÷ 100 = 0.2 - Multiply by the number
0.2 × 40 = 8
answer = number × percent ÷ 100
Worth knowing
- Said another way
- 20% of 40 is 8.
- Check it
- 8 ÷ 40 × 100 = 20%
Other percentages of 40
20% of other numbers
Do it with your own numbers
This page answers one specific question. The Percentage Calculator takes any values you like and answers as you type — in your browser, so nothing you enter is sent anywhere.