Quick Formula

To find a percentage of any number, divide the percentage by 100 and multiply by the number.

Answer = Number x (Percent / 100)

Example: 20% of 1000 = 1000 x 0.20 = 200.

Common Percentages of 100

Question	Answer	Formula
What is 1% of 100?	1	100 x 0.01 = 1
What is 2% of 100?	2	100 x 0.02 = 2
What is 5% of 100?	5	100 x 0.05 = 5
What is 10% of 100?	10	100 x 0.1 = 10
What is 15% of 100?	15	100 x 0.15 = 15
What is 20% of 100?	20	100 x 0.2 = 20
What is 25% of 100?	25	100 x 0.25 = 25
What is 30% of 100?	30	100 x 0.3 = 30
What is 40% of 100?	40	100 x 0.4 = 40
What is 50% of 100?	50	100 x 0.5 = 50
What is 60% of 100?	60	100 x 0.6 = 60
What is 75% of 100?	75	100 x 0.75 = 75
What is 80% of 100?	80	100 x 0.8 = 80
What is 90% of 100?	90	100 x 0.9 = 90

Common Percentages of 1000

Question	Answer	Formula
What is 5% of 1000?	50	1000 x 0.05 = 50
What is 10% of 1000?	100	1000 x 0.1 = 100
What is 15% of 1000?	150	1000 x 0.15 = 150
What is 20% of 1000?	200	1000 x 0.2 = 200
What is 25% of 1000?	250	1000 x 0.25 = 250
What is 30% of 1000?	300	1000 x 0.3 = 300
What is 40% of 1000?	400	1000 x 0.4 = 400
What is 50% of 1000?	500	1000 x 0.5 = 500
What is 75% of 1000?	750	1000 x 0.75 = 750

Mental Math Shortcuts

10% means move the decimal one place left.
5% is half of 10%.
20% is double 10%.
25% is one quarter of the number.
50% is half of the number.

Use the Calculator for Any Value

These tables cover common searches, but the same formula works for any number. Use the calculator when you need values like 17% of 430 or 12.5% of 960.

Calculate Any Percentage

Enter a percentage and number to get an instant answer with the formula.

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Common Percentages of 100 and 1000