What is 40% of 20?

To find 40% of 20, multiply 20 by 40 and divide by 100. 20 × 40 ÷ 100 = 8.

Need a different percentage? Use the free percentage calculator.

Another way to look at it

Turn it around: 20% of 40 is also 8. That's not a coincidence — percentages work both ways, so swapping the two numbers always gives you the same answer.

Nearby round percentages

For context, here is how 40% of 20 compares to nearby round percentages.

As a test score

If this were a test out of 20 marks, scoring 8 would be a 40% result — a bare pass in some grading systems, typically an E grade. Grade boundaries vary by exam board and institution, so treat this as a rough guide rather than an official conversion.

Quick example

Scoring 40% on a 20-mark test means getting 8 marks.

Other percentages of 20

Frequently asked questions

Is 40% of 20 more or less than half?

8 is less than half of 20 — half of 20 is 10.

What's the difference between 40% of 20 and 40% off 20?

40% of 20 is the portion itself: 8. 40% off 20 means removing that portion from the total, leaving 12. The two figures add back up to 20.

How do I work out 40% of 20 without a calculator?

Multiply 20 by 40 and divide by 100. A quick shortcut: find 10% of 20 first (2), then scale that up or down to build 40%.