What Is 20% of 100?
20% of 100 is 20. See the formula, the reverse calculation and nearby combinations.
How to calculate 20% of 100
To find a percentage of a number, multiply the number by the percentage as a decimal. 20% written as a decimal is 0.2, so the calculation is:
20 / 100 × 100 = 0.2 × 100 = 20
The word "percent" literally means "per hundred" — 20% is 20 parts out of every 100. So 20% of 100 asks: if 100 is split into 100 equal parts of 1, how much is 20 of those parts? 20.
Nearby calculations
20% of 10
= 2
20% of 50
= 10
20% of 200
= 40
20% of 250
= 50
5% of 100
= 5
10% of 100
= 10
12% of 100
= 12
15% of 100
= 15
18% of 100
= 18
Frequently asked questions
How do I calculate 20% of 100 by hand?
Convert the percentage to a decimal and multiply: 20% = 0.2, so 0.2 × 100 = 20. A mental shortcut: find 10% first (divide by 10 → 10), then scale from there.
20 is what percent of 100?
20 is exactly 20% of 100 — that's the reverse of this calculation: (part ÷ whole) × 100 = (20 ÷ 100) × 100 = 20%.
Why do percentages matter so much in daily life?
Percentages appear in discounts, taxes, tips, interest rates, test scores and statistics. Because they express proportions relative to a whole, they let you compare values of completely different sizes on equal footing.
Related calculations
What Is 20% of 50?
20% of 50 is 10.
What Is 20% of 200?
20% of 200 is 40.
What Is 20% of 10?
20% of 10 is 2.
What Is 20% of 250?
20% of 250 is 50.
What Is 18% of 5,000?
18% of 5,000 is 900.
What Is 20% of 300?
20% of 300 is 60.
Want a different number? Use the full Percentage Calculator — results update as you type.