A free online scientific calculator for trigonometry, logarithms, exponents, and more — with full calculation history.
Pick another math tool to jump straight to it.
Add, subtract, multiply, and divide fractions with step-by-step working.
Work out percentages, percentage change, and percentage differences.
Generate random numbers within a range, with or without repeats.
Solve for a triangle's sides, angles, or area from partial measurements.
Measure how spread out a set of numbers is from its average.