Free Online Math Calculators
Linear algebra, calculus, the quadratic formula, and number tools. The matrix and calculus calculators show the work on the page.
- RREF Calculator Reduce a matrix to RREF and solve systems, one elimination step at a time. Get started
- Matrix Multiplication Calculator Multiply two matrices with step-by-step working for every cell. Get started
- Determinant Calculator Determinant of a square matrix, from 1×1 through 6×6. Get started
- Inverse Matrix Calculator Invert a square matrix and verify it multiplies back to I. Get started
- Eigenvalue Calculator Find eigenvalues and see the characteristic polynomial for a matrix. Get started
- Eigenvector Calculator Find an eigenvector basis and verify Av = λv with exact fractions. Get started
- Dot Product Calculator Dot two vectors with every product summed, plus magnitudes and the angle. Get started
- Derivative Calculator Differentiate with steps, up to the second derivative. Get started
- Integral Calculator Antiderivatives with the technique behind every step. Get started
- Quadratic Formula Calculator Roots in exact radicals, discriminant, and vertex. Get started
- Factor Calculator List every factor and the prime factorization. Get started
- Prime Number Checker Test primality and find the first factor. Get started
- LCM Calculator Least common multiple of any numbers. Get started
- GCF Calculator Greatest common factor of any numbers. Get started
- LCM/GCF Calculator Least common multiple and greatest common factor. Get started
- Chinese Remainder Theorem Calculator Solve x ≡ a (mod m) systems, with full steps. Get started
- Dilution Calculator C₁V₁ = C₂V₂ for any variable, with units. Get started
- Molarity Calculator Mass, concentration and volume from MW. Get started
- Average Calculator Mean, median, mode and range from any list. Get started
- Standard Deviation Calculator Population and sample SD, with every step shown. Get started
- Abacus Interactive ten-rod soroban with live readout. Get started
- Percent Error Calculator Experimental vs accepted, with steps. Get started
- Half-Life Calculator Remaining amount after any elapsed time. Get started
- Pythagorean Theorem Calculator Any missing side, with live diagram. Get started
- Surface Area Calculator Eight solids with diagrams and steps. Get started
- Volume Calculator Eight solids with diagrams and steps. Get started
- Radians to Degrees Converter Degrees, radians and turns, both ways. Get started
- Fractions Calculator Exact + − × ÷ with mixed numbers. Get started
- Grade Calculator Course average and letter grade. Get started
- Final Grade Calculator The exam score your target needs. Get started
- LaTeX Notepad Type LaTeX math and watch it render instantly, free. Get started
Linear algebra
RREF reduces a matrix with the row operations written out. Matrix multiplication, determinant, and inverse cover the usual products and inverses. A singular matrix is reported as having no inverse. Eigenvalues and eigenvectors are separate calculators. Dot product is for vectors.
Calculus and algebra
Derivative and integral calculators show steps for expressions they can handle. Quadratic formula solves ax² + bx + c = 0, including the discriminant and complex roots when they occur.
Typesetting math
LaTeX Notepad renders typed LaTeX math instantly in the browser, with display and inline equations plus PNG export - no download or sign-up.
Factors, primes, LCM, and GCF
Factor calculator lists factors and prime factorization. Prime checker tests one integer. LCM and GCF each do one job. LCM/GCF reports both for the same inputs. Chinese Remainder Theorem solves systems of congruences with the full working shown. Dilution (C₁V₁ = C₂V₂) and molarity calculators solve solution-prep equations with unit conversion built in.