Math Calculators

Percentage Calculator

Quickly calculate what percentage of a number is, or find the value after increase/decrease. Essential everyday math tool.

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Percentage Increase Decrease Calculator

Calculate percentage increase, percentage decrease, find the % change between two numbers, or reverse-calculate the original value. Three modes in one tool.

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Fraction Calculator

Add, subtract, multiply and divide fractions instantly. Shows simplified answer, mixed number form and decimal equivalent with step-by-step working.

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Scientific Calculator

Online scientific calculator for trigonometric functions (sin, cos, tan), logarithms (log, ln), square root, cube root, powers, factorial and more.

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Algebra Solver

Solve linear equations (ax + b = c) and quadratic equations (ax² + bx + c = 0) step by step. Shows working, discriminant, and verification.

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LCM and HCF Calculator

Find the LCM (Least Common Multiple) and HCF / GCD (Highest Common Factor) of 2 or 3 numbers instantly, with prime factorisation shown.

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