Loading...
Free calculators and solvers — algebra, calculus, statistics, linear algebra, and number theory — that run entirely in your browser with worked results. No sign-up, nothing uploaded. For loans, interest, and ROI, see the Finance tools.
Convert between nanoseconds, microseconds, milliseconds, seconds, minutes, hours, days, weeks, months, and years — one value shown in every unit at once, plus a human-readable breakdown.
EverydayX% of Y, "X is what percent of Y", percent increase/decrease, and apply a percentage — with the exact result, step by step.
EverydaySolve ax² + bx + c = 0 — real or complex roots, discriminant, vertex, and axis of symmetry, with worked steps.
AlgebraNumerically evaluate the derivative of f(x) at a point and definite integrals over [a, b], for any expression in x.
CalculusMultiply, add, transpose, and compute the determinant or inverse of a matrix — Gaussian elimination, exact steps.
Linear AlgebraMean, median, mode, variance, standard deviation (sample & population), quartiles, IQR, and range from a data set.
StatisticsPrimality test, prime factorization, all divisors, and GCD/LCM of two integers — the number-theory essentials.
Number Theory