What is 20% of 400?

To find 20% of 400, multiply 400 by 20 and divide by 100. 400 × 20 ÷ 100 = 80.

Need a different percentage? Use the free percentage calculator.

Another way to look at it

Turn it around: 400% of 20 is also 80. 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 20% of 400 compares to nearby round percentages.

Quick example

Adding 20% tax to a £400 purchase means paying an extra £80.

Other percentages of 400

Frequently asked questions

Is 20% of 400 more or less than half?

80 is less than half of 400 — half of 400 is 200.

What's the difference between 20% of 400 and 20% off 400?

20% of 400 is the portion itself: 80. 20% off 400 means removing that portion from the total, leaving 320. The two figures add back up to 400.

How do I work out 20% of 400 without a calculator?

Multiply 400 by 20 and divide by 100. A quick shortcut: find 10% of 400 first (40), then scale that up or down to build 20%.