11 calculators live

Math Calculators

Arithmetic, algebra, geometry, fractions and everyday number work.

Percentage Percent of, part-to-whole, percentage change and adjustments. 2 inputs Open → Fraction Add, subtract, multiply or divide two fractions — simplified automatically. 4 inputs Open → Average Mean, median, mode and range from any list of numbers. 1 input Open → Square Root Square roots and nth roots, with simplified radical form for integers. 2 inputs Open → Area Area and perimeter for six common shapes, with the formula shown. 2 inputs Open → Triangle Area, angles, perimeter and shape classification from three side lengths. 3 inputs Open → Volume Volume and surface area for five common solids, with the formula shown. 2 inputs Open → Quadratic Solve ax² + bx + c = 0 for its roots, with the vertex and step-by-step working. 3 inputs Open → Logarithm log_b(x) for any base, plus natural log and common log shown alongside. 2 inputs Open → Basic Arithmetic with a running tape, a live graph and keyboard support. 1 input Open → Scientific Trigonometry, logs, powers and constants, with the plot drawn as you type. 1 input Open →