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HexaCalc

How to Find a Percent of a Number

To find a percent of a number, turn the percent into a decimal and multiply. Type your numbers below for an instant answer, then read the three methods to do it by hand or in your head.

What is X% of Y?

%
Results update as you type.
15% of 240
36
As a decimal multiplier
240 × 0.15

Steps

  1. 15 ÷ 100 = 0.15
  2. 0.15 × 240 = 36

Worked example

Example: what is 15% of 240?

  1. Decimal method: 15% = 0.15 → 0.15 × 240 = 36
  2. Fraction method: 15/100 × 240 = 3,600 ÷ 100 = 36
  3. 10% trick: 10% of 240 = 24, 5% = 12 → 24 + 12 = 36

15% of 240 is 36.

Formula

P% of N = (P ÷ 100) × N

“Percent” means “per hundred”, so P% is P hundredths. Multiplying by a number takes that share of it.

Frequently asked questions

What is the easiest way to find 20% of a number?

Divide the number by 5 (or find 10% and double it). 20% of 85 = 85 ÷ 5 = 17.

How do I find a percent of a number on a calculator?

Type the number, press ×, type the percent, then press %. On most phones you can also type the number × 0.15 for 15%.

How do I find more than 100% of a number?

The same way: 150% of 60 = 1.5 × 60 = 90.

Last reviewed October 17, 2026 · Calculations run in your browser; nothing you enter is sent to a server.