How do I calculate 20% of 300?

Multiply 300 by 0.20: 300 × 0.20 = 60.

How do I calculate percentages in my head?

Use benchmarks: 10% = divide by 10, 25% = divide by 4, 50% = divide by 2.

Is my data sent to a server?

No. All calculations are performed in your browser, no data is transmitted.

Calculate a Percentage of a Number — Free Online

Calculate a percentage of a number

What is X% of Y?

Percentage

Number

Result

Percentage means "per hundred". 20% of 150 is like dividing 150 into 100 parts and taking 20. Shortcut: divide by 100, multiply by the percentage. 150 ÷ 100 = 1.5 → 1.5 × 20 = 30.

How to calculate X percent of Y

Calculating a percentage of a number is the most common percentage operation in everyday life. Whether you want to know what 20% of 300 is, estimate a 15% tip at a restaurant, or check a 30% discount at the store, the method is always the same: multiply the number by the percentage, then divide by 100.

The formula is simple: Result = Number × Percentage / 100. For example, 20% of 150 is 150 × 20 / 100 = 30. Mental math tip: for 10%, divide by 10. For 20%, divide by 10 then multiply by 2. For 50%, divide by 2. For 25%, divide by 4.

This calculator is useful in many situations: estimating VAT on an amount, calculating the share of a budget, determining a deposit to pay, or converting a grade to a percentage. Results are displayed in real time as you type.

Frequently asked questions

Multiply 300 by 20/100, i.e. 300 × 0.20 = 60. You can also divide 300 by 10 (= 30) then multiply by 2 (= 60) for quick mental math.

The formula is: Result = Number × Percentage / 100. For example, to find 15% of 200: 200 × 15 / 100 = 30.

Use simple benchmarks: 10% = divide by 10, 5% = divide by 20, 25% = divide by 4, 50% = divide by 2. For 15%, calculate 10% + 5%. For 30%, calculate 3 × 10%.

No. All calculations are performed directly in your browser. No data is transmitted to our servers.

Calculate a Percentage of a Number