What is 30% of 40?

30% of 40 is

12

To find 30% of 40, multiply 40 by 30 and divide by 100. 40 × 30 ÷ 100 = 12.

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Result

12

Another way to look at it

Turn it around: 12 is 30% of 40. Put another way, 12 out of every 40 is the same as 30%.

Quick example

If 40 people took part and 30% said yes, that is 12 people.

Other percentages of 40

What is 5% of 40? 2
What is 10% of 40? 4
What is 12.5% of 40? 5
What is 15% of 40? 6
What is 17.5% of 40? 7
What is 20% of 40? 8

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