Calculators

Convert fractions to decimals instantly. Free online fraction to decimal calculator with step-by-step division explanation.

Convert decimals to fractions easily. Free online decimal to fraction calculator that simplifies results automatically.

Simplify ratios to their lowest terms. Free online ratio simplifier calculator for math, recipes, and proportions.

Convert percentages to decimals instantly. Free online percent to decimal converter for math and finance.

Convert decimals to percentages easily. Free online decimal to percent calculator for quick conversions.

Calculate percentages quickly. Free online percent calculator for finding percentages of numbers and more.

Calculate percentage increase or decrease between two values. Free online percentage change calculator.

Calculate the mean average of any set of numbers. Free online average calculator for quick statistical analysis.

Find the median of any number set. Free online median calculator for statistics and data analysis.

Find the mode (most frequent value) in a data set. Free online mode calculator for statistical analysis.

Calculate the range of a data set. Free online range calculator showing the spread between minimum and maximum values.

Calculate standard deviation for any data set. Free online standard deviation calculator with variance and mean.

Calculate factorials instantly. Free online factorial calculator for permutations, combinations, and probability.

Check if a number is prime. Free online prime checker with divisibility analysis and next prime finder.

Calculate the greatest common divisor of numbers. Free online GCD/GCF calculator using Euclidean algorithm.

Calculate the least common multiple of numbers. Free online LCM calculator with step-by-step solution.

Calculate the modulo (remainder) of division. Free online modulo calculator for programming and math.

Solve quadratic equations instantly. Free online quadratic formula calculator with real and complex solutions.

Solve linear equations step by step. Free online linear equation calculator for ax + b = c format.

Evaluate polynomials at any value. Free online polynomial calculator for computing P(x) at given x.

Calculate rectangle area instantly. Free online rectangle area calculator with length and width inputs.

Calculate triangle area with multiple methods. Free online triangle area calculator using base-height, sides, or coordinates.

Calculate circle area from radius or diameter. Free online circle area calculator with pi-based formula.

Calculate trapezoid area instantly. Free online trapezoid area calculator with parallel sides and height.

Calculate triangle perimeter from side lengths. Free online triangle perimeter calculator.

Calculate rectangle perimeter instantly. Free online rectangle perimeter calculator with length and width.

Calculate circle circumference from radius or diameter. Free online circumference calculator with pi formula.

Calculate cylinder volume instantly. Free online cylinder volume calculator with radius and height inputs.

Calculate sphere volume from radius. Free online sphere volume calculator using the 4/3πr³ formula.

Calculate cube volume instantly. Free online cube volume calculator with side length input.

Calculate cone volume with radius and height. Free online cone volume calculator using V = (1/3)πr²h.

Calculate pyramid volume with base area and height. Free online pyramid volume calculator.

Solve right triangle problems using a² + b² = c². Free online Pythagorean theorem calculator.

Calculate arc length from radius and angle. Free online arc length calculator for circles and sectors.

Calculate circle sector area from radius and angle. Free online sector area calculator.

Calculate sine of any angle. Free online sin calculator for degrees and radians.

Calculate cosine of any angle. Free online cos calculator for degrees and radians.

Calculate tangent of any angle. Free online tan calculator for degrees and radians.

Calculate arcsin, arccos, and arctan. Free online inverse trigonometry calculator.

Convert logarithms between bases. Free online log base converter with change of base formula.

Calculate exponentials and powers. Free online exponent calculator for any base and power.

Add matrices together. Free online matrix addition calculator with step-by-step solution.

Multiply matrices together. Free online matrix multiplication calculator with detailed steps.

Calculate matrix determinant. Free online determinant calculator for 2×2, 3×3, and larger matrices.

Calculate the magnitude (length) of a vector. Free online vector magnitude calculator for 2D and 3D vectors.

Calculate the slope between two points. Free online slope calculator with rise over run formula.

Find the midpoint between two points. Free online midpoint formula calculator for coordinates.

Calculate the distance between two points in 2D or 3D. Free online distance formula calculator.

Interactive unit circle with all key angles and values. Free online unit circle reference tool.

Convert between standard and scientific notation. Free online scientific notation calculator.

Convert between Roman numerals and decimal numbers. Free online Roman numeral converter.

Convert Roman numerals to decimal numbers. Free online Roman numeral to Arabic number converter.

Convert decimal numbers to Roman numerals. Free online Arabic to Roman numeral converter.

Find the prime factorization of any number. Free online prime factor calculator with factor tree.

Calculate arithmetic sequence terms and sums. Free online arithmetic progression calculator.

Calculate geometric sequence terms and sums. Free online geometric progression calculator.

Convert numbers between any bases (binary, octal, decimal, hex). Free online base converter.

Calculate molar mass of chemical compounds. Free online molecular weight calculator.

Calculate gas properties using PV=nRT. Free online ideal gas law calculator.

Calculate pH from hydrogen ion concentration. Free online pH and pOH calculator.

Calculate solution concentration (molarity). Free online molarity and concentration calculator.

Calculate percent yield for chemical reactions. Free online actual vs theoretical yield calculator.

Calculate dilutions using C1V1=C2V2. Free online dilution and concentration calculator.

Solve stoichiometry problems step by step. Free online mole ratio and reaction calculator.

Calculate price elasticity of demand and supply. Free online economics elasticity calculator.

Calculate basic probability for events. Free online probability calculator with AND, OR operations.

Calculate permutations (ordered arrangements). Free online nPr calculator.

Calculate combinations (unordered selections). Free online nCr calculator.

Calculate z-scores for normal distributions. Free online standard score calculator.

Calculate normal distribution probabilities. Free online Gaussian distribution calculator.

Calculate binomial distribution probabilities. Free online binomial probability calculator.

Find critical values for hypothesis tests. Free online z and t critical value calculator.

Calculate chi-square statistic and p-value. Free online chi-square test calculator.

Calculate t-statistic and p-value for t-tests. Free online t-test calculator.

Convert GPA to percentage. Free online GPA to percent calculator for students.

Convert percentage to GPA. Free online percent to GPA calculator for students.

Convert SAT scores to ACT scores. Free online SAT to ACT score conversion calculator.

Convert ACT scores to SAT scores. Free online ACT to SAT score conversion calculator.

Calculate your grade average for courses. Free online course average calculator.

Calculate your test score as a percentage. Free online test percentage calculator.

Calculate weighted grades for courses. Free online weighted average grade calculator.

Calculate your class rank percentile. Free online class rank to percentile calculator.

Calculate recommended study hours for courses. Free online study time calculator.

Estimate time needed for homework assignments. Free online homework time calculator.

Calculate time to read books and articles. Free online reading time estimator.

Calculate reading or writing pages per hour. Free online pages per hour estimator.

Predict your exam score based on preparation. Free online exam score estimator.

Calculate what you need on the final for your target grade. Free online final exam grade calculator.

Calculate missing triangle angles. Free online triangle angle finder calculator.

Solve triangles using Law of Sines. Free online law of sines calculator.

Solve triangles using Law of Cosines. Free online law of cosines calculator.

Calculate missing triangle side lengths. Free online triangle side finder calculator.

Calculate the dot product of two vectors. Free online vector dot product calculator.

Calculate the cross product of two 3D vectors. Free online vector cross product calculator.

Calculate the inverse of a matrix. Free online matrix inverse calculator.

Calculate the transpose of a matrix. Free online matrix transpose calculator.

Solve cubic equations ax³+bx²+cx+d=0. Free online cubic equation calculator.

Solve quartic equations ax⁴+bx³+cx²+dx+e=0. Free online quartic equation calculator.

Find all roots of any polynomial. Free online polynomial root calculator.

Perform operations with complex numbers. Free online complex number calculator.