Best Math & Numbers Tools

Calculate X% of Y, percent change, and reverse percentages.

Compute mean, median, mode, variance, and more from a list of numbers.

Solve, simplify, and scale ratios and aspect ratios.

Add, subtract, multiply, divide, and simplify fractions.

Check primality, factorize numbers, list primes, and compute GCD/LCM.

Convert between decimal, scientific, and engineering notation.

Add, multiply, transpose, and invert matrices with an editable grid.

Round, floor, ceil, or truncate a list of numbers to decimals or multiples.

Solve ax² + bx + c = 0 with real or complex roots.

Find the greatest common divisor and least common multiple of numbers.

Project investment growth with compounding and recurring contributions.

Compute logarithms of any base and exponentiation results.

Generate arithmetic, geometric, or Fibonacci-like number sequences.

Calculate monthly loan payments, total interest, and view the full amortization schedule.

Calculate your Body Mass Index and healthy weight range.

Calculate tip amount and split the bill evenly among a group.

Calculate a discounted price plus sales tax and total savings.