Free online math tools
Ten instant math and statistics calculators that run entirely in your browser. No signup, no upload, no ads.
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Fraction Calculator
Add, subtract, multiply, and divide fractions. Auto-simplifies to lowest terms.
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Scientific Calculator
Trig, logarithms, square roots, powers, and memory — all in your browser.
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Prime Number Checker
Test whether any number is prime and list all primes up to N.
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Prime Factorization
Find the prime factorization of any positive integer up to 1 trillion. Shows exponential form, flat factor list, and total divisor count. Free, no upload.
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GCD & LCM Calculator
Compute the greatest common divisor (GCD) and least common multiple (LCM) of any two positive integers instantly, free and 100% in your browser.
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Quadratic Equation Solver
Solve any quadratic equation ax² + bx + c = 0 instantly. Shows discriminant, real and complex roots, and step-by-step working. Free, browser-only.
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Matrix Calculator
Add, subtract, multiply 2×2 and 3×3 matrices, plus determinant and inverse.
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Mean, Median & Mode
Calculate mean, median, mode, and range for any dataset of numbers.
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Standard Deviation Calculator
Compute population and sample standard deviation and variance instantly.
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Permutation & Combination
Calculate permutations P(n,r) and combinations C(n,r) for any n and r up to 170. Free online calculator for combinatorics, statistics, and exam prep.
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Why use browser-based math tools?
Every calculator here runs entirely inside your browser — no server round trips, no account needed. Results are instant and your inputs never leave your device. These tools cover the most common math and statistics tasks for students, teachers, engineers, and developers: from basic fraction arithmetic to matrix operations and probability calculations.