What is 50% of 80?

To find 50% of 80, multiply 80 by 50 and divide by 100. 80 × 50 ÷ 100 = 40.

Need a different percentage? Use the free percentage calculator.

Another way to look at it

Turn it around: 80% of 50 is also 40. 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 80 compares to nearby round percentages.

As a test score

If this were a test out of 80 marks, scoring 40 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 £80 item saves you £40.

Other percentages of 80

Frequently asked questions

Is 50% of 80 more or less than half?

40 is exactly half of 80.

What's the difference between 50% of 80 and 50% off 80?

50% of 80 is the portion itself: 40. 50% off 80 means removing that portion from the total, leaving 40. The two figures add back up to 80.

How do I work out 50% of 80 without a calculator?

Multiply 80 by 50 and divide by 100. A quick shortcut: find 10% of 80 first (8), then scale that up or down to build 50%.