Free Math Calculators

Calculate percent of a value, part as percent of total, percent change, and increase or decrease scenarios.

Simplify fractions and calculate addition, subtraction, multiplication, division, decimals, and percent forms.

Simplify ratios, calculate shares of a total, and scale an equivalent ratio from a target quantity.

Solve ax + b = c equations, isolate x, and identify one-solution, identity, or no-solution cases.

Calculate slope from two points with rise, run, y-intercept, point-slope form, and vertical-line handling.

Find the midpoint between two coordinate points with x and y averages and ordered-pair output.

Calculate straight-line distance between two coordinate points with delta x, delta y, and squared distance.

Calculate rectangle, triangle, circle, and trapezoid area with formula-backed square-unit results.

Calculate square, rectangle, triangle, and circle perimeter or circumference with unit-aware formulas.

Calculate diameter, circumference, area, sector area, and arc length from radius and angle inputs.

Calculate triangle perimeter, semiperimeter, Heron area, base-height area, side validity, and side type.

Calculate hypotenuse, missing leg, squared terms, and right-triangle checks from side inputs.

Calculate hypotenuse, area, perimeter, acute angles, sine, cosine, and tangent from two legs.

Review common degree, radian, sine, cosine, tangent, and coordinate values for unit circle study.

Calculate mean, median, mode, range, sum, minimum, maximum, and sorted values from a pasted dataset.

Calculate sample and population standard deviation, variance, mean, and squared-deviation checks.

Calculate percentile values with nearest-rank and interpolated methods, sorted values, and rank checks.

Calculate z-score, distance from mean, and approximate normal percentile from value, mean, and standard deviation.

Review formulas for arithmetic, algebra, geometry, trigonometry, statistics, notation, and number theory.

Convert values into scientific notation, engineering notation, e notation, coefficient, and exponent form.

Find prime factors, exponent form, expanded factors, prime status, and positive divisor count.

Calculate greatest common divisor, least common multiple, and prime factor audit rows for integer lists.