Math Calculators
Use our free online math calculators for everyday calculations, algebra, geometry, statistics, probability, fractions, percentages, and more. Get accurate results quickly without installing any software.
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Basic Calculator
A simple, reliable calculator for everyday arithmetic: add, subtract, multiply, divide.
Scientific Calculator
Advanced scientific calculator with trigonometric, logarithmic, and exponential functions.
Percentage Calculator
Calculate percentages, percentage change, and what percent one number is of another.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step results.
Average Calculator
Calculate the mean, median, and mode of a set of numbers instantly.
Ratio Calculator
Calculate and simplify ratios or find missing values in proportions.
Quadratic Formula Calculator
Solve quadratic equations (ax² + bx + c = 0) using the quadratic formula.
Triangle Calculator
Calculate triangle area, angles, and side lengths from given measurements.
Area Calculator
Calculate the area of circles, rectangles, triangles, and other shapes.
Volume Calculator
Calculate the volume of spheres, cylinders, cubes, and other 3D shapes.
Circle Calculator
Calculate area, circumference, radius, and diameter of a circle.
Root Calculator
Calculate the nth root of any number.
Exponent Calculator
Calculate exponents and powers of numbers.
Pythagorean Theorem Calculator
Solve for the hypotenuse or leg of a right triangle.
Statistics Calculator
Calculate mean, variance, standard deviation, and more for your data set.
Probability Calculator
Calculate the probability of events, combinations, and permutations.
Mean, Median, Mode, Range Calculator
Calculate mean, median, mode, and range for a set of numbers.
Standard Deviation Calculator
Calculate population and sample standard deviation and variance.
Permutation & Combination Calculator
Calculate the number of permutations (nPr) and combinations (nCr).
Z-Score Calculator
Calculate the z-score from a value, or find the value from a z-score.
Confidence Interval Calculator
Calculate the confidence interval for a sample mean using t or z distributions.
P-Value Calculator
Calculate p-values for z-tests and t-tests (one-tailed and two-tailed).
Sample Size Calculator
Calculate the required sample size for surveys and studies.
Log Calculator
Calculate logarithms for base 10, base e (ln), base 2, or any custom base.
Binary Calculator
Add, subtract, multiply, and divide binary numbers.
Hex Calculator
Add, subtract, multiply, and divide hexadecimal numbers.
Scientific Notation Calculator
Add, subtract, multiply, and divide numbers in scientific notation.
Prime Factorization Calculator
Find the prime factors of any integer.
GCF Calculator
Find the Greatest Common Factor (GCF) of two or more numbers.
LCM Calculator
Find the Least Common Multiple (LCM) of two or more numbers.
Rounding Calculator
Round numbers to the nearest whole number, tenth, hundredth, or any decimal place.
Percent Error Calculator
Calculate the percent error between an observed value and true value.