Math Tools
8 free in-browser math tools — solve quadratic equations, find prime factors, calculate LCM and GCD, convert Roman numerals, work with fractions, and more. No signup, instant results.
Fraction Calculator
Add, subtract, multiply, and divide fractions and mixed numbers. Shows the result as a simplified fraction and decimal. Step-by-step solution included.
Quadratic Formula Calculator
Solve any quadratic equation ax² + bx + c = 0. Enter a, b, c to get real or complex roots, the discriminant, and the vertex of the parabola.
Prime Factorization Calculator
Find the prime factorization of any number. Shows all prime factors, their exponents, all divisors, and whether the number is prime.
LCM and GCD Calculator
Calculate the Least Common Multiple (LCM) and Greatest Common Divisor (GCD) of two or more numbers. Shows the prime factorization method.
Scientific Notation Converter
Convert numbers between standard decimal form and scientific notation. Works with very large and very small numbers. Bidirectional conversion.
Pythagorean Theorem Calculator
Solve right triangles using the Pythagorean theorem. Enter any two sides to find the third — hypotenuse, adjacent, or opposite. Shows full working.
Roman Numeral Converter
Convert between Arabic numbers and Roman numerals. Supports numbers from 1 to 3,999. Bidirectional — enter either format.
Fibonacci Sequence Generator
Generate the Fibonacci sequence up to a specified number of terms. Find the nth Fibonacci number and see the ratio convergence to the golden ratio.
About these math tools
Every tool runs in your browser using JavaScript — no server, no account, no rate limits. Results are computed instantly as you type. The tools cover common topics from school mathematics: number theory (primes, GCD, LCM), algebra (quadratic equations, fractions), geometry (Pythagorean theorem), and number systems (scientific notation, Roman numerals, Fibonacci).
What is the Pythagorean theorem?
The Pythagorean theorem states that in a right-angled triangle, the square of the hypotenuse (longest side) equals the sum of the squares of the other two sides: a² + b² = c². Enter any two sides and the calculator instantly finds the third.
What is the difference between LCM and GCD?
The GCD (Greatest Common Divisor, also called GCF or HCF) is the largest number that divides both numbers exactly. The LCM (Least Common Multiple) is the smallest number that both numbers divide into. They are related: LCM(a, b) = (a × b) ÷ GCD(a, b). GCD is used to simplify fractions; LCM is used to find a common denominator.
What is the golden ratio and how does it relate to Fibonacci?
The golden ratio (φ ≈ 1.618033...) is an irrational number with unique mathematical properties. As you go further along the Fibonacci sequence, the ratio of consecutive terms converges to the golden ratio. F(n+1) ÷ F(n) approaches 1.618... as n increases. The Fibonacci generator shows this convergence alongside the sequence.