Math calculators

Find the mean, median, mode, range, min, max, count, and sum for any list of numbers. Paste or type values separated by commas, spaces, or new lines.

Calculate circle radius, diameter, circumference, and area from any one known measurement.

Calculate C(n,k) combinations (order doesn't matter) and P(n,k) permutations (order matters) from n items taken k at a time.

Calculate the distance between two points in a coordinate plane. Also returns the midpoint and slope of the connecting line.

Calculate any base raised to any power, including negative exponents, fractional exponents for roots, and very large numbers shown in scientific notation.

Calculate n! for any non-negative integer. Shows the exact value for small n and scientific notation for large factorials with digit count.

Add, subtract, multiply, and divide fractions. Results are automatically simplified to lowest terms with the mixed number and decimal equivalent shown.

Find the greatest common divisor (GCD) and least common multiple (LCM) for two or more integers. Supports any number of inputs.

Calculate your term GPA from letter grades and credit hours. Optionally add your existing GPA and credits to compute your updated cumulative GPA.

Calculate your overall grade percentage, letter grade, and GPA from assignment scores. Supports weighted averages and plus/minus grading scales.

Check whether any year is a leap year and find the next and previous leap years using the Gregorian calendar rules.

Calculate log base 2, natural log (ln), log base 10, or any custom base logarithm. Uses the change-of-base formula and shows the expression, result, and all three common log values simultaneously.

Find the midpoint, distance, slope, and line equation for any two coordinate points. Enter x and y values for both points and get instant results.

Add, subtract, multiply, and divide mixed numbers. Converts each mixed number to an improper fraction, performs the operation, simplifies by GCD, and converts the result back to a mixed number with a decimal equivalent.

Calculate the nth root of any real number, from square roots to 100th roots. Shows the result, whether it is a perfect root, and step-by-step working.

Convert integers between binary, octal, decimal, hexadecimal, or any custom base from 2 to 36. See all four standard representations at once.

Calculate percent error between a measured (experimental) value and the accepted (theoretical) value. Also shows absolute and relative error.

Five common percentage problems in one place — find a percent of a number, express one number as a percent of another, calculate percent change, or increase/decrease a value by a percentage.

Calculate percentage change between two values, find the new value after a percentage increase or decrease, or work backwards to find the original value.

Convert between 12 pressure units including Pascal, psi, bar, atm, mmHg, and more.

Find the prime factorization of any positive integer. Shows prime factors, exponent notation, number of divisors, and all divisors.

Solve for any missing value in a proportion A/B = C/D. Enter three known values and find the fourth.

Solve any quadratic equation ax² + bx + c = 0. Shows the discriminant, solution type, and both real or complex roots instantly.

Calculate the range, quartiles Q1–Q3, interquartile range (IQR), and outliers for any data set. Enter values separated by commas.

Simplify ratios, find the decimal equivalent, and solve proportions. Supports two-term and three-term ratios.

Solve a right triangle from any two known values — sides or angles. Returns all sides, both acute angles, area, and perimeter.

Convert between Arabic numbers and Roman numerals instantly. Supports numbers from 1 to 3999 with a full symbol breakdown.

A full-featured scientific calculator with trigonometry, logarithms, exponents, factorials, memory functions, and keyboard support. Degrees and radians mode.

Calculate slope, y-intercept, line equation, distance, midpoint, and angle from two coordinate points. Supports all line types.

Calculate the square root, cube root, or any nth root of any real number. Shows whether the result is a perfect root, and includes the value squared and cubed for reference.

Calculate population and sample standard deviation, variance, and mean from a list of numbers. Enter values separated by commas, spaces, or new lines.

Solve any triangle from any combination of sides and angles using the law of sines and law of cosines. Returns all sides, angles, area, and perimeter.

Calculate population or sample variance, standard deviation, mean, median, mode, and range from a list of numbers. Enter values separated by commas.

Calculate volume and surface area for cubes, rectangular boxes, spheres, cylinders, cones, and rectangular pyramids. Works in cm, m, inches, or feet.

Calculate z-scores from raw values, convert z-scores to percentiles, or find the z-score for any percentile using the standard normal distribution.