Calculator

Free online calculator: type any expression or use the keypad for multiplication, division, squares, square roots, powers, percentages, fractions, factorials, logarithms and trigonometry, plus exact big-number maths, prime factors, GCD, LCM and more.

 

Works as you type. Understands ^ powers, %, !, implicit multiplication like 2(3+4), and functions such as sqrt, sin, ln, log, root(3,27), gcd(12,18), nCr(5,2), round(x,2).

More calculations

Whole numbers and decimals of any size are multiplied and divided exactly (no rounding), so big products and repeating decimals are correct to the last digit.

Multiplication table

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About this calculator

This free online calculator covers everyday arithmetic and the maths you need for school: addition, subtraction, multiplication and division, squares and square roots, cubes and cube roots, powers, percentages, factorials, logarithms and trigonometry in degrees or radians. Type a whole expression such as (12 + 8) × 3² and the answer appears as you type, following the correct order of operations.

  • Exact big-number multiplication and division with quotient, remainder and repeating decimals.
  • Squares, cubes and roots with simplified radicals (√72 = 6√2) and a perfect-square check.
  • Fractions added, subtracted, multiplied and divided and always reduced, plus decimal-to-fraction conversion.
  • Prime factorization, factors, GCD and LCM, number base conversion and Roman numerals, and mean, median, mode and standard deviation of any list.
  • Your history stays in your own browser, and every calculation has a shareable link.
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