Math Calculators — Every Formula & Tool You Need

From basic arithmetic to advanced statistics, our math calculators cover every topic you'll encounter in school or work. Each calculator shows its formula and working steps so you learn, not just compute.

494+ máy tính trong hướng dẫn này

Fractions

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Add, subtract, multiply, divide and convert fractions. Step-by-step solution with formula, LCD method and fully worked examples. Instant result.

Add Fractions

Add two or more Phân số and get the simplified result. Enter numerators and denominators —

Mixed Numbers Calculator

Perform operations on Hỗn số: add, subtract, multiply, or divide. Enter Hỗn số — get the s

Simplify Fractions

Reduce any fraction to its lowest terms. Enter numerator and denominator — get the simplif

Complex Fractions

Simplify complex and compound Phân số with numerators or denominators that are themselves

Decimal to Fraction

Chuyển đổi any decimal to a fraction in lowest terms. Nhập decimal — get the exact fractio

Fraction to Decimal

Chuyển đổi any fraction to its decimal equivalent. Enter numerator and denominator — get t

Fraction to Percent

Chuyển đổi any fraction to a percentage. Enter the numerator and denominator — get the per

Percent to Fraction

Chuyển đổi any percentage to a fraction in simplest form. Nhập percentage — get the fracti

LCD Calculator

Tìm the Lowest Common Denominator for any set of Phân số. Nhập denominators and get the LC

LCM Calculator

Tính the Least Common Multiple of two or more integers. Nhập numbers and get the LCM with

GCF Calculator

Tìm the Greatest Common Factor of any set of numbers. Nhập integers and get the GCF with f

Equivalent Fractions

Tìm Phân số Bằng nhau for any fraction. Enter numerator and denominator — get a full list

General Math

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Core arithmetic and number operations — addition, subtraction, rounding, factors, primes, and sequences. Enter your values and get instant step-by-step answers. Free.

Basic Calculator

Standard arithmetic operations. Nhập giá trị của bạn — see the result with formula, exampl

Percentage Calculator

Tính percentages, increases and decreases. Quick calculation with ví dụ minh họa and formu

Rounding Calculator

Round numbers to any decimal place. Nhập giá trị của bạn and unit — see the Chuyển đổied r

Long Division Calculator

từng bước long division with remainders. Nhập giá trị của bạn — see the result with formul

Long Multiplication

Multiply any two large numbers từng bước with Nhân dài. Nhập giá trị của bạn — see each pa

Prime Factorization

Break numbers into prime factors. Nhập giá trị của bạn and unit — see the Chuyển đổied res

Prime Number Checker

Is your number prime? Enter any integer and Tức thìly Tìm out — with full divisibility pro

Binary Converter

Chuyển đổi between binary, decimal, hex and octal. Fast and accurate conversion with formu

Log Calculator

Tính logarithms in any base (common, natural, or custom). Nhập giá trị của bạn and base —

Exponent Calculator

Tính any base raised to any power, including fractional and negative exponents. Enter base

Matrix Calculator

2×2 matrix addition, multiplication, determinant and transpose. See formula, giải pháp từn

Factors Calculator

List all factors and factor pairs of any positive integer. Nhập number — see every divisor

Algebra

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Solve equations, factor polynomials, and work with exponents and roots. Enter your expression — get step-by-step algebraic working and the complete solution. Free.

Quadratic Formula

Solve any quadratic equation ax²+bx+c=0. Enter coefficients — get all roots via Công thức

Exponents Calculator

Tính powers and exponents. See formula, giải pháp từng bước and all rearrangements. Tức th

Square Root Calculator

Tìm square roots of any number. Formula, variable legend, diagram and ví dụ minh họa inclu

Cube Root Calculator

Tính Cube Root quickly and accurately. Nhập giá trị của bạn — see the result with the form

Radicals & Roots

Simplify and Tính radical expressions. Nhập radicand and index — see the simplified form,

Logarithm Calculator

Solve logarithm equations. See formula, giải pháp từng bước and all rearrangements. Tức th

Absolute Value Calculator

Tính Absolute Value quickly and accurately. Nhập giá trị của bạn — see the result with the

FOIL Method Calculator

Multiply two binomials using the FOIL method. Enter (a+b)(c+d) — see each product (First,

Percent Change Calculator

Tính percentage change between values. Quick calculation with ví dụ minh họa and formula.

Percent Difference

Tìm percentage difference between two values. Quick calculation with ví dụ minh họa and fo

Percent Error Calculator

Tính percent error between a measured and theoretical value. Enter both values — see the f

Completing the Square

Solve quadratics by Hoàn thành Bình phương. Formula, variable legend, diagram and ví dụ mi

Percent

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Percentage calculations and conversions. Quick calculation with worked example and formula. Free everyday calculator.

Percentage Increase

Tính Tăng Phần trăm between two values. Enter the original and new value — see percent gro

Percentage Decrease

Tính Giảm Phần trăm between two values. Enter the original and new value — see percent red

Percent to Decimal

Chuyển đổi any percentage to a decimal by dividing by 100. Enter percentage — get the deci

Decimal to Percent

Chuyển đổi any decimal to a percentage by multiplying by 100. Enter decimal — get the perc

Tip Calculator

Tính the tip amount for any restaurant bill. Enter the total and tip % — see tip per perso

Discount Calculator

Tính Discount quickly and accurately. Nhập giá trị của bạn — see the result with the formu

Percentage Error Calculator

Tính Percentage Error quickly and accurately. Nhập giá trị của bạn — see the result with t

Percentage Off Calculator

Tính Percentage Off quickly and accurately. Nhập giá trị của bạn — see the result with the

Reverse Percentage Calculator

Tính Reverse Percentage quickly and accurately. Nhập giá trị của bạn — see the result with

Mark-Up Calculator

Tính selling price from cost and markup percentage. Enter cost and markup — see selling pr

Tax and Tip Combined Calculator

Tính Tax and Tip Combined quickly and accurately. Nhập giá trị của bạn — see the result wi

Statistics

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Mean, median, mode, standard deviation, distributions, and hypothesis tests. Enter your dataset — see the full statistical summary with formula and interpretation. Free.

Mean Median Mode

Tính mean, median, and mode of any dataset. Enter values — see all three averages, sorted

Standard Deviation

Tính variance and Độ lệch Chuẩn. giải pháp từng bước with formula, example dataset and int

Confidence Interval Calculator

Tính confidence intervals for population means. giải pháp từng bước with formula, example

Test Grade Calculator

Chuyển đổi correct answers to percentage and letter grade. Fast and accurate result with f

Average Calculator

Tìm the arithmetic mean of any set of numbers. Nhập giá trị của bạn — see the mean, sum, c

Quartile Calculator

Tính quartiles and IQR. giải pháp từng bước with formula, example dataset and interpretati

Percentile Calculator

Tìm percentile rank of data values. giải pháp từng bước with formula, example dataset and

Variance Calculator

Tính statistical variance. giải pháp từng bước with formula, example dataset and interpret

Z-Score Calculator

Tính z-score from any value, mean, and Độ lệch Chuẩn. Nhập data — see z-score, percentile

Descriptive Statistics

Complete statistical summary of any dataset. Nhập giá trị của bạn — see mean, median, mode

Sum Calculator

Add a list of numbers quickly and accurately. Nhập giá trị của bạn separated by commas — s

Random Number Generator

Generate random numbers in any range with or without repetition. Enter min, max, and count

Hypothesis Testing

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P-Value Calculator

P-value from test statistic for z t and chi-square tests. giải pháp từng bước with formula

Effect Size Calculator

Calculate required sample size for desired statistical power. Enter effect size, alpha, an

Statistical Power Calculator

Tính required sample size for any hypothesis test. Enter effect size, alpha, and desired p

Confidence Level Calculator

Confidence interval for population parameters. giải pháp từng bước with formula, example d

Paired t-Test Calculator

Compare means of related or paired measurements. giải pháp từng bước with formula, example

Chi-Square Test Calculator

Test independence of categorical variables. giải pháp từng bước with formula, example data

F-Distribution Calculator

Tìm F critical values and p-values for ANOVA tests. Enter degrees of Miễn phídom and alpha

Moving Average Calculator

Tính Moving Average quickly and accurately. Nhập giá trị của bạn — see the result with the

Geometric Mean Calculator

Tính the Trung bình Nhân of any dataset. Nhập giá trị của bạn — see the nth root formula,

Harmonic Mean Calculator

Tính the Trung bình Điều hòa of any set of values. Nhập numbers — see the formula, result,

Interquartile Range Calculator

Tính the IQR and five-number summary. Nhập dataset — see Q1, Q2, Q3, IQR, and identify out

Percentile Rank Calculator

Tìm the percentile rank of a score in any dataset. Nhập scores — see the percentile, rank

Data Analysis

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Covariance Calculator

Tính the covariance between two datasets. Enter paired x and y values — see population and

Moving Average Calculator

Tính simple, exponential, and weighted moving averages. Nhập data series and period — see

Box Plot Calculator

Generate the five-number summary for any dataset. Nhập giá trị của bạn — see min, Q1, medi

Histogram Calculator

Create frequency distribution and histogram data from any dataset. Nhập giá trị của bạn an

Discrete Math

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Combinations, permutations, sequences, logic, and graph theory tools. Enter your parameters — see the result with combinatorial formula and worked steps. Free.

Combinations (nCr)

Tính combinations without replacement. giải pháp từng bước with formula, example dataset a

Permutations (nPr)

Tính permutations without replacement. giải pháp từng bước with formula, example dataset a

Factorial Calculator n!

Tính factorials of integers. See formula, giải pháp từng bước and all rearrangements. Tức

Pascal's Triangle

Generate Pascal's Triangle for any number of rows. Enter n — see the full triangle with bi

Fibonacci Calculator

Generate Fibonacci sequence numbers. See formula, giải pháp từng bước and all rearrangemen

Combinations with Replacement

Tính combinations with replacement C(n+r−1, r). Enter n and r — get the result with stars-

Permutations with Replacement

Tính permutations with replacement (nʳ). Enter n and r — get the count with formula and co

Combinations Calculator

Tính toán các tổ hợp nCr với mọi n và r. Nhập giá trị - xem hệ số nhị thức, công thức và h

Inclusion-Exclusion Principle Calculator

Apply the Inclusion-Exclusion Principle to count elements in unions of sets. Enter set siz

Stirling Numbers Calculator

Tính Stirling numbers of the first or second kind. Enter n and k — get the Stirling number

Catalan Number Calculator

Tính the nth Catalan number. Enter n — get the Catalan number with recursive formula, clos

Derangements Calculator

Tính derangements (permutations with no fixed points) for n objects. Enter n — see D(n) wi

Geometry

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Area, perimeter, volume, and surface area for any 2D or 3D shape. Enter your dimensions — see all measurements with diagrams and formula breakdown. Free.

Circle Calculator

Area, circumference, diameter and radius. Formula, variable legend, diagram and ví dụ minh

Rectangle Calculator

Area, perimeter and diagonal of rectangles. Formula, variable legend, diagram and ví dụ mi

Square Calculator

Area, perimeter and diagonal of squares. Formula, variable legend, diagram and ví dụ minh

Right Triangle Calculator

Solve right triangles with Định lý Pythagore. Formula, variable legend, diagram and ví dụ

Pythagorean Theorem

Apply the Định lý Pythagore to Tìm any side of a right triangle. Enter two sides — get the

Parallelogram Calculator

Tính area and perimeter of any parallelogram. Enter base, height, and side length — see ar