Tool 1 of 10
Percentage calculator.
What is X% of Y? Type your numbers — the answer updates instantly.
Result
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0% — 100%
Frequently asked questions.
What is X% of Y?
To find X% of Y, multiply Y by X and divide by 100. For example, 20% of 150 = (20 × 150) / 100 = 30.
How do I calculate a percentage of a number?
Use the formula: Result = (Percentage ÷ 100) × Number. So 15% of 200 = (15 ÷ 100) × 200 = 30.
What does "percent" mean?
"Percent" means "per hundred." So 25% means 25 out of every 100, or 0.25 as a decimal.
How do I find 10% of a number quickly?
To find 10% of any number, simply move the decimal point one place to the left. 10% of 450 = 45.
How do I find 5% of a number?
Find 10% first, then halve it. 5% of 80 = 10% of 80 ÷ 2 = 8 ÷ 2 = 4.
Can I use this for tax, tips, or discounts?
Yes — this calculator works for any "X% of Y" problem. For dedicated tax, tip, or discount calculations, we have specific tools for each.