Ferramentas online gratuitas
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
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
GCD Calculator
Find the greatest common divisor (GCD) and LCM of two or more positive integers with Euclidean algorithm steps and prime-factor method.
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
Trigonometry Calculator
Compute sin, cos, tan, csc, sec, cot, and inverse trig functions in degrees or radians with exact values and step-by-step work.
Used 0 times•Updated never
Probability Calculator
Calculate basic, complement, union, intersection, conditional, and binomial probabilities with formulas and step-by-step work.
Used 0 times•Updated never
Combinations Calculator
Calculate combinations nCr and permutations nPr with factorial formulas, step-by-step work, and support for large results.
Used 0 times•Updated never
Permutations Calculator
Calculate permutations nPr and factorials n! for ordered arrangements with formulas and step-by-step work.
Used 0 times•Updated never
Statistics Calculator
Compute mean, median, mode, standard deviation, variance, quartiles, range, and more from any dataset with step-by-step formulas.
Used 0 times•Updated never
Regression Calculator
Fit a linear regression line to (x, y) data — slope, intercept, equation, correlation r, R², and predictions with step-by-step work.
Used 0 times•Updated never
Z Score Calculator
Convert raw scores to z-scores and back using z = (x − μ) ÷ σ, with percentile and step-by-step work.
Used 0 times•Updated never
Standard Deviation Calculator
Calculate sample and population standard deviation and variance from any data set with squared-deviation steps.
Used 0 times•Updated never