What is 50% of 40?

To find 50% of 40, multiply 40 by 50 and divide by 100. 40 × 50 ÷ 100 = 20.

Need a different percentage? Use the free percentage calculator.

Another way to look at it

Turn it around: 40% of 50 is also 20. 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 50% of 40 compares to nearby round percentages.

As a test score

If this were a test out of 40 marks, scoring 20 would be a 50% result — a pass in most grading systems, typically a D grade. Grade boundaries vary by exam board and institution, so treat this as a rough guide rather than an official conversion.

Quick example

A 50% discount on a £40 item saves you £20.

Other percentages of 40

Frequently asked questions

Is 50% of 40 more or less than half?

20 is exactly half of 40.

What's the difference between 50% of 40 and 50% off 40?

50% of 40 is the portion itself: 20. 50% off 40 means removing that portion from the total, leaving 20. The two figures add back up to 40.

How do I work out 50% of 40 without a calculator?

Multiply 40 by 50 and divide by 100. A quick shortcut: find 10% of 40 first (4), then scale that up or down to build 50%.