Gratis online tools
268+ free online tools for PDF, images, SEO, developers, color, and productivity. Fast, browser-based, and private — no signup, no installs, no limits. Search above or browse by category below.
Total tools26810.8K total uses
Categories13Active categories
Most usedJSON Formatter4.1K uses
Recently addedExperiment RandomizerNewest tool
Quadratic Equation Solver
Solve ax² + bx + c = 0 with the quadratic formula. Get roots, discriminant, vertex, and step-by-step work.
Used 0 times•Updated never
Polynomial Solver
Find roots of polynomials up to degree 6. Enter coefficients or an equation like x³ − 6x² + 11x − 6 = 0.
Used 0 times•Updated never
Derivative Calculator
Compute symbolic derivatives of functions with step-by-step rules. Supports polynomials, trig, ln, exp, and more.
Used 0 times•Updated never
Integral Calculator
Compute symbolic indefinite integrals with step-by-step rules. Supports polynomials, trig, exp, and 1/x.
Used 0 times•Updated never
Limit Calculator
Evaluate limits numerically with one- and two-sided approaches. Supports finite points and ±∞.
Used 0 times•Updated never
Determinant Calculator
Calculate the determinant of a square matrix up to 6×6 with step-by-step cofactor work.
Used 0 times•Updated never
Inverse Matrix Calculator
Compute the inverse of a square matrix up to 6×6 using Gauss–Jordan elimination with verification.
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Complex Number Calculator
Add, subtract, multiply, and divide complex numbers, find conjugate, modulus, argument, polar form, and integer powers with steps.
Used 0 times•Updated never
Prime Number Generator
Generate prime numbers in a range or list the first N primes using the Sieve of Eratosthenes with copy-ready output.
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Factorization Calculator
Find the prime factorization of any integer, list all divisors, and see trial-division steps with copy-ready output.
Used 0 times•Updated never
LCM Calculator
Find the least common multiple (LCM) and GCD of two or more positive integers with prime-factor and step-by-step GCD methods.
Used 0 times•Updated never
Logarithm Calculator
Compute natural log (ln), common log (log₁₀), binary log (log₂), custom-base logarithms, and antilogs with change-of-base steps and verification.
Used 0 times•Updated never