Quick, accurate, and free online math calculators. No downloads required — calculate percentages, fractions, averages, LCM, HCF, and more right in your browser.
Calculate percentages, percentage of a number, and percentage change between two values.
Add, subtract, multiply, and divide fractions. Results are automatically simplified to lowest terms.
Calculate the average (mean) of any set of numbers. Also shows sum, count, min, and max.
Find the Least Common Multiple (LCM) and Highest Common Factor (HCF) of two or more numbers.
Check whether a number is prime. Also shows all prime factors if the number is composite.
Calculate the square, cube, square root, and cube root of any number instantly.
Simplify ratios, scale ratios up or down, and solve ratio problems with three values.
Find the next numbers in common sequences like arithmetic, geometric, Fibonacci, and square number patterns.
Calculate the percentage increase or decrease between two values. Perfect for price changes, growth rates, and comparisons.
Calculate compound interest on investments and loans. See how your money grows with different rates, time periods, and compounding frequencies.
Calculate the standard deviation, variance, mean, and range of any data set. Supports both population and sample standard deviation.
Convert any number to its word form. Handles integers, decimals, and negative numbers up to trillions.
Solve any quadratic equation ax² + bx + c = 0. Shows both roots, the discriminant, and step-by-step working.
Download the app and compete with players worldwide. Track your progress, climb the leaderboard, and master mathematics.
