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數學工具

代數、微積分、統計與數字工具。

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 數學工具

數學工具
Matrix Calculator
Add, subtract, multiply, transpose, invert, and find determinants of matrices up to 6×6.
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數學工具
Probability Calculator
Calculate basic, complement, union, intersection, conditional, and binomial probabilities with formulas and step-by-step work.
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數學工具
Data Plotter
Plot data as line, scatter, or bar charts from x,y pairs or separate columns. Enter lab results, calibration curves, or trial data — get an instant SVG chart with axis labels. Free, browser-based.
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數學工具
Sample Size Calculator
Calculate 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.
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數學工具
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.
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數學工具
Prime Number Generator
Generate prime numbers in a range or list the first N primes using the Sieve of Eratosthenes with copy-ready output.
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數學工具
Vector Calculator
Compute 2D and 3D vector operations — add, subtract, dot product, cross product, magnitude, unit vector, angle, and projection — with steps.
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數學工具
Z Score Calculator
Convert raw scores to z-scores and back using z = (x − μ) ÷ σ, with percentile and step-by-step work.
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數學工具
Equation Solver
Solve linear and quadratic equations step by step. Enter expressions like 2x + 3 = 7 or x^2 - 5x + 6 = 0.
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數學工具
Factorization Calculator
Find the prime factorization of any integer, list all divisors, and see trial-division steps with copy-ready output.
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數學工具
Polynomial Solver
Find roots of polynomials up to degree 6. Enter coefficients or an equation like x³ − 6x² + 11x − 6 = 0.
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數學工具
Inverse Matrix Calculator
Compute the inverse of a square matrix up to 6×6 using Gauss–Jordan elimination with verification.
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