Math

Free online percentage calculator. Calculate percentages, find percent of numbers, percentage change, and convert between percent, fraction, and decimal.

Calculate variance and standard deviation

Precise calculation in fraction form

Calculate the nth power of any number

Calculate square root/cube root/nth root

Calculate logarithm values with any base

Calculate growth rate and rate of change online

Calculate the percentage difference between two values

Quickly calculate percentage values, percentage increase/decrease results

Calculate the result after decreasing a value by a specific percentage, automatically computing the decrease amount and final value

Calculate the result after increasing the original value by a specified percentage, automatically computing the increase amount and final value

Calculate the growth amount and growth rate from the original value to the new value, automatically determining growth/decline type with detailed calculation steps

Quickly convert percentages to simplified fractions and decimal forms, supporting integer percentages and decimal percentages (e.g., 37.5%), automatically simplifying numerator and denominator with detailed conversion steps

Quickly calculate the ratio relationship between two numbers, automatically finding the greatest common divisor to obtain the simplest integer ratio, supporting integers and decimals with precise ratio values and detailed calculation steps

Quickly calculate the standard deviation, mean, and variance of a data set, measuring data dispersion. Supports sample standard deviation and population standard deviation, suitable for statistical analysis, quality control, and investment risk assessment

Quickly convert any number to standard form, scientific notation, and engineering notation. Supports regular numbers and e-notation input, providing detailed conversion results and comparison of the three notation types

Quickly calculate the total volume of cylindrical, spherical, and rectangular tanks. Automatically converts between cubic meters, liters, and gallons. Suitable for oil tank, water tank, and chemical container volume estimation scenarios

Calculate function derivatives at specific points using numerical methods. Supports precise differentiation of power, trigonometric, exponential, and logarithmic functions. Provides function values and derivative results with differentiation rule explanations

Quickly calculate the reciprocal of any non-zero number. Supports positive/negative numbers, integers, and decimals. Provides product verification and detailed calculation steps to help understand reciprocal mathematical properties

Quickly calculate equivalent forms of fractions. Supports positive/negative fractions, mixed numbers, integers, proper and improper fractions. Provides decimal representation and lists of equivalent fractions to help understand proportional relationships and fraction reduction principles

Quickly calculate the harmonic mean of a set of positive numbers. Commonly used for average speed, parallel resistance, average rate calculations. Supports comma-separated input, automatically filters invalid data, and provides detailed calculation steps with formula explanations

Quickly calculate kinetic energy, mass, or velocity using the KE = ½mv² formula. Supports three calculation modes with detailed steps and physics principle explanations. Suitable for physics education, engineering mechanics, and motion analysis scenarios

Quickly calculate common logarithms (base 10), natural logarithms (base e), and logarithms with any positive base. Supports custom base selection, results accurate to 10 decimal places, with detailed calculation steps and logarithm property explanations. Suitable for mathematics, science, engineering, and financial calculations

Online solver for quadratic equations ax² + bx + c = 0. Supports real and complex roots, automatically calculates discriminant Δ and provides detailed solution steps. Suitable for math learning, physics problems, engineering design, and financial analysis scenarios

Online fraction addition and subtraction calculator. Supports adding or subtracting multiple fractions, automatic common denominator and reduction with decimal results. Suitable for student math learning, recipe adjustment, woodworking measurements, and financial ratio calculations

Online binary calculator supporting binary-decimal conversion, binary addition, subtraction, multiplication, and division operations. Provides detailed calculation steps and result analysis. Suitable for programming learning, network configuration, computer organization principles, and bit operation optimization scenarios

Online calculator for arcsin/arccos/arctan, supports angle and radian units

Online calculator for sample/population variance, standard deviation, and coefficient of variation

Online fraction addition, subtraction, multiplication, and division with auto-simplification and decimal conversion

Quickly convert fractions to percentages and decimals with simplification tips

Convert fractions to decimals and percentages, supports custom decimal places

Online complex number addition, subtraction, multiplication, and division with automatic modulus and argument calculation

Online permutation, combination, and classical probability calculation with detailed step-by-step explanation

Quickly calculate the side lengths of a right triangle based on a²+b²=c²

Mixed number addition, subtraction, multiplication, and division, with conversion to mixed fractions and decimals

Quickly calculate the mix ratio of cement, sand, gravel, and water

Free definite integral calculator using numerical integration methods. Supports power functions, trigonometric functions, exponential functions and more, with detailed calculation steps and result analysis. Ideal for math learning, scientific research, and engineering design.

Free geometric mean calculator for quickly computing the geometric mean of a set of positive numbers. Suitable for average growth rate, investment return, and data analysis. Supports batch input, auto-filters invalid data, and provides detailed steps and result interpretation.

Free fraction simplifier supporting proper and improper fractions, with automatic conversion to mixed numbers and decimals. Quickly computes GCD and provides detailed simplification steps. Useful for math learning, engineering calculations, and financial analysis.

Free online factorial calculator for quickly computing factorials of integers from 0 to 20, with detailed steps and results. Supports combinatorics, probability analysis, and algorithm design.

Free matrix calculator supporting addition, subtraction, and multiplication. Input matrices of any dimensions (e.g. 2x2, 3x3), auto-parses format and validates dimension compatibility. Features clear table results and error prompts. Ideal for linear algebra, engineering calculations, and data transformation. Ctrl+Enter shortcut supported.

Free 2x2 matrix operation calculator supporting addition, subtraction, and multiplication. Quickly computes matrix sums, differences, and products with real numbers. Suitable for linear algebra, engineering, and data science. Real-time results with a clean interface.

Free distance formula calculator based on the Euclidean distance formula √[(x₂-x₁)²+(y₂-y₁)²]. Supports decimal and negative coordinates, shows Δx, Δy, and complete derivation steps. Perfect for geometry, game development, computer graphics, data science, and engineering measurement.

Online scientific notation conversion tool. Converts numbers to scientific notation, e-notation, engineering notation, and standard form, automatically identifying magnitude. Supports extremely large and tiny numbers.

Free online scientific calculator with basic operations, trigonometric functions (sin/cos/tan), inverse trig, logarithms (ln/log), exponentiation (e^x/x^y), square roots and more. Supports continuous complex expressions. Great for math, engineering, and physics.

Free scientific notation calculator supporting addition, subtraction, multiplication, and division. Auto-converts results to scientific notation, e-notation, and standard form. Handles extreme values with expression display and detailed steps. Ideal for research, engineering, physics, chemistry, and programming.

Calculate cube roots of positive, negative, decimal numbers and zero with precision

Convert and calculate volumes in cubic yards, cubic feet, and cubic meters

Bidirectional conversion between Arabic numerals and Roman numerals

Accurate length conversion between meters, feet, and inches

Calculate density, mass, and volume using the ρ=m/V formula

Compute powers with integer and fractional exponents

Calculate area of rectangles, circles, triangles, trapezoids and more

Calculate permutations P(n,k) and combinations C(n,k)

Compute square roots of any non-negative number with verification

Calculate area in square feet and convert to square meters

Online arithmetic, geometric, and harmonic mean calculator

Online statistical data analysis tool

Online remainder calculator

Online sine, cosine, and tangent calculator

Online geometry calculator for sides, angles, and area

Online hexadecimal addition, subtraction, multiplication, and division tool

PEMDAS online calculator

Online number rounding tool

Online speed and rate calculator

Online sequence generator and summation tool

Online random number generation tool

Online function expansion and approximation tool

Online geometric volume calculator

Online vector operation tool

Online decimal to percentage converter

Online decimal to fraction converter

Calculate line slope, angle & distance from two points quickly.

Find nth term & sum of arithmetic/geometric sequences easily.

Decompose positive integers into prime factors step by step.

Count significant digits of any number automatically.

Round numbers to specified significant figures with steps.

Compute circle diameter, circumference & area from radius.

Calculate cylinder volume, lateral & total surface area.

Find percentage of a number for discounts, tips & tax.

Perform long division with remainder and decimal result.

Convert feet/inches to cm/m and vice versa instantly.

Free online integer calculator supporting Floor, Ceil, and Round rounding methods. Ideal for financial calculations, data analysis, and more.

Free online normal distribution calculator. Enter mean, standard deviation, and X value to compute Z-score, cumulative probability, and central interval probability. Essential for statistical analysis.

Online right triangle calculator based on the Pythagorean theorem. Enter any two sides to solve for remaining sides, acute angles, and area. Perfect for math learning and engineering design.

Online exponentiation calculator supporting arbitrary base and exponent. Explains the difference between power functions and exponential functions with scientific notation. Master exponent operations.

Free online exponential growth calculator based on the continuous compounding formula A = P·e^(rt). Supports compound interest, population forecasting, radioactive decay, and more. Computes final value and growth factor in real time.

Free online prime factorization calculator. Decompose numbers into products of primes with exponential form and divisor count. Uses trial division for fast, accurate results.

Free online median calculator. Enter numbers to compute median, mean, and mode. Understand central tendency of data. Ideal for academic research and data analysis.

Free online greatest common divisor calculator supporting multiple numbers. Shows calculation steps and divisor lists. Based on Euclidean algorithm. Perfect for fraction reduction and number theory learning.

Free online greatest common divisor calculator supporting multiple positive integers for GCD and LCM. Uses Euclidean algorithm. Suitable for fraction simplification and math teaching.

Free online least common multiple calculator supporting batch input of multiple numbers. Displays both LCM and GCD results. Based on Euclidean algorithm. Ideal for fraction common denominators, period calculations, and more.

Free online least common denominator calculator supporting batch input of denominators. Uses Euclidean algorithm to quickly calculate LCD. Ideal for fraction common denominator and addition/subtraction operations with unlike denominators.

Free online Nth root calculator supporting calculation of any real number's positive integer root, including square root, cube root, and higher roots. Includes verification feature to ensure calculation accuracy.

Free online percentile calculator supporting precise calculation of 1st-99th percentiles for any dataset. Uses linear interpolation method with automatic sorting.

Free online standard deviation calculator supporting both sample and population standard deviation. Simultaneously calculates mean, median, and variance. Suitable for statistical analysis.

Free online probability calculator for quickly computing event success probability, failure probability, and odds ratio. Supports success count and total trials input. Suitable for game drop rates, risk assessment, and more.

Free regression analysis calculator for quickly computing linear regression equations, slope, and intercept. Obtains correlation coefficient and coefficient of determination. Supports multiple data points to help analyze linear relationships between variables.

Free online permutation and combination calculator for quickly calculating permutations P(n,k), combinations C(n,k), and factorials n! with detailed step-by-step display.

Free online frequency distribution calculator for quickly computing data frequency and relative frequency percentages. Supports batch input with automatic sorting to generate distribution tables.

Free online average calculator for quickly computing mean, median, and mode of a set of numbers. Supports comma and space separated input. Provides accurate central tendency analysis.

Free online statistical calculator for quickly computing the mean, median, and mode of a dataset. Supports range and total analysis.

Free online quartile calculator for quickly calculating Q1, median, Q3, and interquartile range (IQR). Supports batch data input with automatic sorting and provides detailed calculation steps.

Free online correlation coefficient calculator for quickly computing the Pearson correlation coefficient and coefficient of determination for two datasets. Automatically determines correlation strength.

Free online sample size calculator supporting 90%/95%/99% confidence levels and custom margin of error. Features finite population correction, suitable for market research and clinical trials.

Free Z-score calculator for quickly computing standard scores and normal distribution cumulative probabilities. Supports automatic deviation level detection with detailed calculation steps.

Free online concentration calculator for quickly computing solution mass fraction and percentage concentration. Supports chemistry experiment preparation and reagent analysis.

Based on Newton's second law, enter any two values to automatically calculate force, mass, or acceleration. Provides accurate mechanics conversions.