Free Online Calculators
Accurate, fast, and free calculators for math, science, health, finance, and everyday use.
Topic Calculator Hubs
Complex number calculator collection
Four arithmetic operations of complex numbers, conjugation, argument, square root, power operation and form conversion.
Matrix calculator collection
Matrix operations, matrix inversion, determinants, and linear equations tools.
Collection of statistics and probability calculators
Variance, standard deviation, correlation coefficient, covariance, and common probability distributions.
Analytical geometry calculator collection
Analysis of distances, intersections, tangents, circles, conics, and coordinate geometry.
Math
Addition Calculator
Add integers, decimals, and multiple values with transparent steps
Subtraction Calculator
Subtract numbers with decimal support and remainder-style checks
Multiplication Calculator
Multiply values including decimals, negatives, and product chains
Division Calculator
Divide numbers and review quotient, remainder, and decimal results
Exponent Calculator
Compute powers as base^exponent, including fractional exponents
Factorial Calculator
Compute n! for combinatorics, series, and probability setups
Logarithm Calculator
Compute log base 10, natural log, or a custom base
Natural logarithm calculator
Free online natural logarithm calculator
Antilog calculator
Free online antilog calculator
Root Calculator
Free Online Root Calculator
Scientific notation calculator
Free online scientific notation calculator
Scientific Calculator
Evaluate trig, logs, powers, roots, and multi-step expressions
Sin / Cos / Tan Calculator
Trigonometry Calculator
Quadratic Equation Solver
Solve ax² + bx + c = 0 and inspect discriminant-based roots
Square Root Calculator
Find square roots, cube roots, and custom nth roots
Fraction Calculator
Add, subtract, multiply, and divide fractions with simplification
Pythagorean Theorem Calculator
Find the missing side of a right triangle
Statistics Calculator
Get mean, median, mode, and standard deviation from a list
Average Calculator
Find the arithmetic mean of a list of numbers quickly
Standard Deviation Calculator
Measure spread in a dataset with population or sample options
Variance Calculator
Free Online Variance Calculator
Weighted Average Calculator
Combine scores or values using custom weights or credits
GCF Calculator
Free online greatest common divisor calculator
LCM Calculator
Free online least common multiple calculator
ratio calculator
Free online ratio calculator
Exponential Growth Calculator
Free Online Exponential Growth Calculator
random number generator
Free online random number generator
Binary & Hex Converter
Translate values among binary, decimal, hex, and octal forms
Number Base Converter
Convert values among binary, octal, decimal, and hexadecimal
Permutation and combination calculator
Free online permutation calculator
Prime Number Checker
Test whether an integer is prime and review related factors
angle converter
Free online angle converter
Factoring Calculator
Free Online Factoring Calculator
Modulo operation calculator
Free online modulo arithmetic calculator
Inverse Trigonometric Calculator
Free online inverse trigonometric functions calculator
Rounding calculator
Free online rounding calculator
linear equation solver
Free online linear equation solver
System of Linear Equations Solver
Solve two-variable linear systems and compare solution methods
Triangle Calculator
Free online triangle calculator
Radical Simplification Calculator
Free Online Radical Simplification Calculator
Cubic equation solver
Free online cubic equation solver
Fibonacci Sequence Calculator
Online Fibonacci Sequence Generation Tool
Arithmetic Sequence Calculator
Online arithmetic sequence calculator
Geometric Sequence Calculator
Online geometric sequence calculator
Logarithmic conversion calculator
Online logarithmic conversion tool
Infinite Geometric Series Calculator
Find the sum of an infinite geometric series when it converges
Set Operations Calculator
Compute union, intersection, difference, and complement of sets
Bitwise Operations Calculator
Calculate AND, OR, XOR, NOT, and bit shifts online
Divisibility Checker
Check whether one integer divides another evenly
Conjugate complex numbers calculator
Online complex conjugate calculator
Argument of a Complex Number Calculator
Find the argument (principal value) of a complex number
Expectation and Variance Calculator
Calculate expected value and variance for discrete distributions
Prime Number Generator
Generate prime numbers in a range online
determinant calculator
Online determinant calculator
Hyperbolic Functions Calculator
Calculate sinh, cosh, tanh and related hyperbolic functions
Inverse hyperbolic function calculator
Online inverse hyperbolic function calculator
Prime Factorization Calculator
Factor integers into primes online
Complex number arithmetic calculator
Online complex number arithmetic operation tool
Complex Number Form Converter
Convert complex numbers between rectangular and polar form
Matrix Operations Calculator
Add, multiply, and transform matrices online
Complex Square Root Calculator
Find square roots of complex numbers online
Binomial Distribution Calculator
Calculate binomial probabilities, mean, and variance
Poisson Distribution Calculator
Calculate Poisson probabilities for event counts over time
Normal Distribution Calculator
Calculate normal distribution probabilities and z-scores
Geometric Distribution Calculator
Calculate geometric distribution probabilities online
Correlation Coefficient Calculator
Calculate Pearson correlation coefficient from data pairs
Logic Truth Table Generator
Build truth tables for Boolean logic expressions online
Boolean Expression Simplifier
Simplify Boolean algebra expressions online
Integer Partition Calculator
Generate integer partitions and count partition ways
Recursive Sequence Calculator
Generate terms of recursive sequences online
Perfect Number Checker
Check if a number is perfect and list its proper divisors
Catalan number calculator
Online Catalan number calculator
Gamma Function Calculator
Calculate the gamma function Γ(x) online
Fraction Simplification Calculator
Simplify fractions to lowest terms online
Radical Simplification Calculator
Simplify square roots and other radicals online
Absolute Value Equation Calculator
Online absolute value equation solver tool
Parametric Equations Calculator
Online parametric equation calculator
Matrix inversion calculator
Online matrix inversion calculator
Complex number exponentiation calculator
Online complex number exponentiation tool
Hypergeometric Distribution Calculator
Online hypergeometric distribution probability calculator
Covariance Calculator
Online covariance calculator
Geometry
Circle Calculator
Derive radius, diameter, circumference, and area relationships
Area Calculator
Compute area for rectangles, triangles, circles, and more shapes
Volume Calculator
Find volume of cubes, spheres, cylinders, and cones
Point to Line Distance Calculator
Calculate the shortest distance from a point to a line
Line Intersection Calculator
Find the intersection point of two lines in the plane
Polygon Area Calculator
Calculate the area of a polygon from vertex coordinates
Circle Equation Calculator
Convert and analyze circle equations in the plane
Conic Sections Calculator
Analyze ellipses, parabolas, hyperbolas, and related conics
Triangle Centers Calculator
Find centroid, orthocenter, incenter, circumcenter, and more
Point to Plane Distance Calculator
Calculate the shortest distance from a point to a plane
Tangent Equation Calculator
Online tangent equation calculator
Health
Everyday
Age Calculator
Get exact age in years, months, and days from a birth date
Percentage Calculator
Work out X% of Y, reverse percentages, and percent change between values
Percent Change Calculator
Measure percent increase or decrease between two values
Percent Increase Calculator
Apply a growth percent to a starting value and see the new total
Percent Error Calculator
Compare experimental and accepted values with percent error
Tip Calculator
Split restaurant bills and calculate tip amounts per person
Discount Calculator
Find sale price and savings from an original price and off rate
Converters
Physics
Finance
Education
Auto
Electricity
Electricity Bill Calculator
Estimate power cost from kWh usage and local unit rates
Energy consumption calculator
Free online energy consumption calculator
Ohm's Law Calculator
Relate voltage, current, and resistance with V = IR
Power calculator
Free online power calculator
Watt/Kw Converter
Free online watt to kilowatt converter
Lumens to Watts converter
Free online lumens to watts converter
Watts to Lumens Converter
Free Online Watts to Lumens Converter
Illuminance calculator
Free online illuminance calculator