% Calculators

Percentage Calculator

Calculate percentages in three ways: X% of Y, X is what % of Y, and X increased or decreased by Y%. Instant result.

X% de Y X é qual % de Y Y acrescido de X% Y reduzido de X%

X (%)

Y (valor)

—

How to calculate percentage?

X% of Y: multiply Y by X and divide by 100. Example: 10% of 200 = 20.

X is what % of Y: divide X by Y and multiply by 100. Example: 20 is 10% of 200.

Increase/decrease: multiply Y by (1 ± X/100). Example: 200 + 10% = 220; 200 − 10% = 180.

Convert Arabic numbers to Roman numerals and vice versa. Supports values from 1 to 3999. Instant bidirectional conversion.

Calculate the Greatest Common Divisor (GCD) of two or more numbers using the Euclidean algorithm. Instant result.

Calculate the Least Common Multiple (LCM) of two or more numbers. Instant result in the browser.