Math Calculators

Solve complex math problems instantly with our collection of free online mathematics calculators. From basic arithmetic to advanced algebra and statistics.

Percentage Calculator

Calculate percentages, percentage increase/decrease, and percentage of numbers.

Calculate Percentage

Fraction Calculator

Add, subtract, multiply, divide fractions and convert between fractions and decimals.

Calculate Fractions

Algebra Calculator

Solve linear equations, quadratic equations, and simplify algebraic expressions.

Solve Algebra

Statistics Calculator

Calculate mean, median, mode, standard deviation, variance, and more.

Calculate Statistics

Geometry Calculator

Calculate area, perimeter, volume of shapes like circles, triangles, rectangles.

Calculate Geometry

Prime Number Checker

Check if a number is prime, find prime factors, and generate prime numbers.

Check Primes

LCM & GCD Calculator

Calculate Least Common Multiple (LCM) and Greatest Common Divisor (GCD).

Calculate LCM/GCD

Scientific Calculator

Advanced calculator with trigonometry, logarithms, exponents, and more.

Open Calculator

Percentage Calculator

Percentage Formula
Percentage = (Value / Total) × 100
Value = (Percentage / 100) × Total

Fraction Calculator

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Algebra Calculator

Common Algebra Formulas
Linear: ax + b = c → x = (c - b)/a
Quadratic: ax² + bx + c = 0 → x = [-b ± √(b² - 4ac)]/2a

Math Reference

Basic Operations

  • Addition: a + b
  • Subtraction: a - b
  • Multiplication: a × b
  • Division: a ÷ b

Algebra

  • Linear: y = mx + b
  • Quadratic: ax² + bx + c
  • Exponents: aⁿ
  • Logarithms: logₐb

Geometry

  • Circle: πr²
  • Triangle: ½bh
  • Rectangle: l × w
  • Sphere: 4πr²