Kostenlose 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
Equation Solver
Solve linear and quadratic equations step by step. Enter expressions like 2x + 3 = 7 or x^2 - 5x + 6 = 0.
Used 0 times•Updated never
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
Limit Calculator
Evaluate limits numerically with one- and two-sided approaches. Supports finite points and ±∞.
Used 0 times•Updated never
Matrix Calculator
Add, subtract, multiply, transpose, invert, and find determinants of matrices up to 6×6.
Used 0 times•Updated never
Determinant Calculator
Calculate the determinant of a square matrix up to 6×6 with step-by-step cofactor work.
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Inverse Matrix Calculator
Compute the inverse of a square matrix up to 6×6 using Gauss–Jordan elimination with verification.
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Vector Calculator
Compute 2D and 3D vector operations — add, subtract, dot product, cross product, magnitude, unit vector, angle, and projection — with steps.
Used 0 times•Updated never
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