About the Fraction Calculator
Fractions come up constantly in math coursework — combining measurements, working through algebra, or just checking a homework answer — and the arithmetic gets error-prone fast once you're finding common denominators or cross-multiplying by hand. This tool takes two fractions and an operation (add, subtract, multiply, or divide) and returns the exact simplified result, so you can check your own work or skip straight to the next step of a larger problem.
Every result is automatically reduced to lowest terms — the same simplification you'd do by hand, using the greatest common divisor of the numerator and denominator. You'll also see the decimal equivalent, and if the result is an improper fraction (numerator larger than the denominator), its mixed-number form too, so you can read the answer however your assignment expects it.
A couple of rules to keep in mind: neither denominator can be zero (that's not a valid fraction), and when dividing, the second fraction's numerator can't be zero either, since that would mean dividing by zero. Both numerators and denominators should be whole numbers — if you're starting from a decimal, convert it to a fraction first.
Uses the standard cross-multiplication formulas for fraction arithmetic, then simplifies the result via GCD (greatest common divisor) reduction.