수학 도구

대수, 미적분, 통계, 수 도구.

Free mathematical calculators for students, teachers, and professionals. Solve equations and polynomials, compute derivatives and integrals, work with matrices and vectors, and analyze data with statistics, regression, and probability tools. Number theory utilities cover primes, factorization, GCD, and LCM. Every tool runs instantly in your browser with step-by-step work and no signup.

Popular 수학 도구

Equation SolverSolve linear and quadratic equations step by step. Enter expressions like 2x + 3 = 7 or x^2 - 5x + 6 = 0.
Statistics CalculatorCompute mean, median, mode, standard deviation, variance, quartiles, range, and more from any dataset with step-by-step formulas.
Sample Size CalculatorCalculate sample size for surveys, mean estimates, A/B tests, and two-group comparisons. Set confidence level, power, margin of error, and effect size. Step-by-step formulas. Free, browser-based.

수학 도구

Probability Calculator

Calculate basic, complement, union, intersection, conditional, and binomial probabilities with formulas and step-by-step work.

Used 3 timesUpdated 19 minutes ago

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수학 도구

Statistics Calculator

Compute mean, median, mode, standard deviation, variance, quartiles, range, and more from any dataset with step-by-step formulas.

Used 2 timesUpdated 28 minutes ago

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수학 도구

Error Percentage Calculator

Calculate percent error, absolute error, relative error, and percent difference between measured and accepted values. Step-by-step formulas for physics and chemistry lab reports. Free, instant, browser-based.

Used 2 timesUpdated 28 minutes ago

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수학 도구

Matrix Calculator

Add, subtract, multiply, transpose, invert, and find determinants of matrices up to 6×6.

Used 1 timesUpdated 21 minutes ago

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수학 도구

Vector Calculator

Compute 2D and 3D vector operations — add, subtract, dot product, cross product, magnitude, unit vector, angle, and projection — with steps.

Used 1 timesUpdated 21 minutes ago

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수학 도구

GCD Calculator

Find the greatest common divisor (GCD) and LCM of two or more positive integers with Euclidean algorithm steps and prime-factor method.

Used 1 timesUpdated 19 minutes ago

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수학 도구

Combinations Calculator

Calculate combinations nCr and permutations nPr with factorial formulas, step-by-step work, and support for large results.

Used 1 timesUpdated 19 minutes ago

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수학 도구

Standard Deviation Calculator

Calculate sample and population standard deviation and variance from any data set with squared-deviation steps.

Used 1 timesUpdated 30 minutes ago

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수학 도구

Mean Median Mode Calculator

Find the mean, median, and mode of any data set with frequency tables, sorted data, and step-by-step work.

Used 1 timesUpdated 30 minutes ago

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수학 도구

Measurement Uncertainty Calculator

Combine and propagate measurement uncertainty with root-sum-of-squares (RSS). Add, subtract, multiply, or divide values with ± uncertainties, convert percent uncertainty, and compute expanded uncertainty U = k·u. Free, instant, browser-based.

Used 1 timesUpdated 29 minutes ago

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수학 도구

Scientific Calculator

Perform basic and scientific calculations with trigonometry, logarithms, powers, and degree or radian mode.

Used 0 timesUpdated never

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수학 도구

Equation Solver

Solve linear and quadratic equations step by step. Enter expressions like 2x + 3 = 7 or x^2 - 5x + 6 = 0.

Used 0 timesUpdated never

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