What is 15% of 30?

15% of 30 is

4.5

To find 15% of 30, multiply 30 by 15 and divide by 100. 30 × 15 ÷ 100 = 4.5.

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Result

4.5

Another way to look at it

Turn it around: 4.5 is 15% of 30. So 30 is the total you would need if 4.5 made up 15% of it.

Quick example

If a £30 restaurant bill had a 15% tip added, the tip would be £4.5.

Other percentages of 30

What is 5% of 30? 1.5
What is 10% of 30? 3
What is 12.5% of 30? 3.75
What is 17.5% of 30? 5.25
What is 20% of 30? 6
What is 25% of 30? 7.5

Browse more common percentage calculations — a quick-reference page covering all common combinations.