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Math Calculators

Percentage, ratio, LCM, HCF, permutation, combination, probability, and statistics calculators.

13 calculators available

Percentage Calculator

Calculate percentages easily. Find what percent one number is of another, or calculate the percentage of a number.

Calculate the percentage increase between two numbers. Find how much a value has grown in percentage terms.

Calculate the percentage decrease between two numbers. Find how much a value has dropped in percentage terms.

Calculate the percentage change between two values. Works for both increases and decreases.

Simplify ratios and solve proportion problems. Find equivalent ratios and missing values in proportions.

Calculate the Least Common Multiple (LCM) of two or more numbers. Essential for fraction operations and math problems.

Calculate the Highest Common Factor (HCF) or Greatest Common Divisor (GCD) of two numbers.

Calculate permutations (nPr). Find the number of ways to arrange r items from n items where order matters.

Calculate combinations (nCr). Find ways to choose r items from n items where order does not matter.

Calculate the probability of events. Find single event probability and combined event probabilities.

Calculate standard deviation, variance, and mean for a data set. Enter comma-separated values for statistical analysis.

Calculate mean, median, and mode for any data set. Find central tendency measures for your data.

Evaluate scientific expressions with trigonometry, logarithms, powers, roots, and constants.