Mathematics Tools
Academic math and algebra calculation suite. Simplify and operate on fractions with step-by-step reduction, solve quadratic equations with real or complex roots, compute permutations and combinations, calculate standard deviation, and find LCM and GCD.
Available Mathematics Tools (15)
Fraction Calculator with Steps
Add, subtract, multiply, and divide fractions and mixed numbers with step-by-step simplification.
Standard Deviation & Variance Calculator
Calculate population and sample standard deviation, variance, mean, median, sum, and margin of error with steps.
Matrix Calculator (Determinant, Inverse & Multiplication)
Calculate matrix determinants, inverse matrices, transpose, addition, and multiplication for 2x2 and 3x3 matrices.
Permutation & Combination Calculator (nPr & nCr)
Calculate permutations (nPr) and combinations (nCr) with step-by-step factorial formulas and repetition options.
Quadratic Equation Solver with Steps
Solve ax² + bx + c = 0 quadratic equations for real and complex roots, discriminant, and parabola vertex.
LCM & GCD / GCF Calculator
Calculate the Least Common Multiple (LCM) and Greatest Common Divisor (GCD/GCF) with prime factor trees.
Prime Number Checker & Factorizer
Check if a number is prime, generate complete prime factorizations, and find adjacent prime numbers.
Aspect Ratio Calculator (Image & Video)
Calculate display and media aspect ratios (16:9, 4:3, 1:1, 9:16, 21:9), find missing dimensions, and compute exact GCD scaling factors.
Z-Score & Normal Distribution Calculator
Calculate statistics Z-scores from raw values, mean, and standard deviation with two-tailed probability P(Z) and percentile ranking.
Student's T-Test Calculator
Calculate independent two-sample and paired Student's t-test statistics, degrees of freedom, t-value, and p-value estimates.
Chi-Square Test Calculator
Calculate Pearson's Chi-square statistic (chi^2), degrees of freedom, expected frequencies, and p-value for contingency tables.
Confidence Interval Calculator
Calculate 90%, 95%, and 99% confidence intervals for sample means with margin of error and standard error of the mean.
Percentage Difference Calculator
Calculate the symmetric percentage difference between two numerical values without reference bias or directional dependency.
Proportion Calculator (A/B = C/D)
Solve direct, inverse, and cross-multiplication proportions (A / B = C / D) with step-by-step algebraic solutions.
Matrix Determinant Calculator
Calculate the determinant of 2x2 and 3x3 square matrices with step-by-step cofactor expansion and rule of Sarrus display.
Explore Other Categories
Image Tools
Compress, resize, convert, crop, and optimize images locally in your browser.
PDF Tools
Merge, split, rotate, convert, and organize PDF documents securely on your device.
Developer Tools
Format JSON, inspect JWTs, test regular expressions, encode Base64, and generate hashes.
SEO Tools
Preview SERP listings, analyze keyword density, generate robots.txt, and build Schema markup.