Calculate mortgages, investments, sales tax, mathematical formulas, and statistical metrics with high precision.
Perform matrix multiplication, addition, subtraction, determinants, inverse, transpose, rank, trace, and RREF Gaussian elimination with the Matrix Calculator.
Calculate circle radius, diameter, circumference, area, sector, arc length, segment, and annulus with the Circle Calculator. Features exact pi terms and SVG visualizer.
Solve any triangle with the Triangle Solver. Supports SSS, SAS, ASA, AAS, and SSA ambiguous cases, Heron area, inradius, circumradius, and SVG diagrams.
Calculate hypotenuse, legs, angles, area, and perimeter with the Pythagorean Theorem Calculator. Features exact radical form, step-by-step proofs, and SVG diagrams.
Calculate the Least Common Multiple (LCM) and GCF for two or more numbers with step-by-step Prime Factorization, Ladder, and Listing methods.
Calculate permutations (nPr) and combinations (nCr) with and without repetition. Features exact BigInt arithmetic up to n=1000, step-by-step expansions, and probability odds.
Free online Factorial Calculator. Computes exact n! up to n=1000, double factorials n!!, permutations (nPr), combinations (nCr), Legendre trailing zeroes & Stirling approximation.
Decompose numbers into prime factors, test primality, generate visual factor trees, and calculate divisor counts and sums step-by-step.
Calculate the Greatest Common Divisor (GCD / GCF / HCF) for two or more numbers with step-by-step Euclidean Algorithm, Prime Factorization, and divisor lists.
Calculate logarithms with any custom base, natural log (ln), common log (log10), binary log (log2), and antilogs with step-by-step mathematical proofs.
Calculate exponents, powers, negative exponents, fractional powers, roots, and scientific notation with step-by-step mathematical proofs.
Free online Quadratic Equation Solver to find real and complex roots, discriminant, vertex, factored form, and interactive parabola graph.
Free online Fraction Calculator & Simplifier to add, subtract, multiply, and divide proper, improper, and mixed fractions with step-by-step solutions.
Calculate percentage of numbers, percentage change, increase, decrease, differences, sales discounts, and fraction conversions with step-by-step formulas.
Free online Basic Calculator for fast arithmetic, percentages, square roots, powers, memory registers, and calculation tape history.
Perform advanced scientific calculations with trigonometry, logarithms, roots, factorials, DEG/RAD modes, and memory.
Calculate, scale, and simplify aspect ratios and pixel dimensions. Free online aspect ratio calculator with 16:9, 4K, 9:16, CSS code generator, and letterbox simulator.
Calculate screen PPI, dot pitch, visual acuity Retina distance, and convert digital image pixels to physical print DPI sizes online with free presets.
Welcome to our comprehensive suite of Math, Algebra & Scientific Calculators. All tools are engineered for lightning-fast performance, high precision, and absolute user privacy.
Unlike traditional web services that require account registration or cloud uploads, our online utilities run 100% locally in your web browser. No files or private data ever leave your device.