Periodic Table
Explore all 118 elements with our interactive periodic table. Search by name, symbol, or number. View detailed properties, categories, and groups.
Multiplication Table
Master multiplication with our interactive times table. Practice mode with difficulty levels, score tracking, and customizable table sizes from 5x5 to 20x20.
Prime Number Checker
Free Prime Number Checker – Test if any number is prime, get prime factorization, and find all primes in a range. Instant results with visual display.
Matrix Calculator
Free Matrix Calculator – Add, subtract, multiply matrices up to 4×4. Calculate transpose and determinant. Step-by-step results.
Equation Solver
Free Equation Solver – Solve linear (ax+b=0) and quadratic (ax²+bx+c=0) equations with step-by-step solutions. Shows discriminant and complex roots.