Free Online Math Calculators

Free Online Fraction Calculator

Free Online Fraction Simplifier

Reduce fractions to lowest terms instantly. Enter numerator and denominator—get the simplified fraction.

Free Online GCF Calculator

Find the GCF (GCD) of two or more integers. Simplify fractions and check algebra homework—results in seconds.

Free Online LCD Calculator

Find the least common denominator (LCD) of fractions. Add or compare fractions with a common denominator fast.

Free Online Percentage Calculator

Calculate percent of a number, what percent one value is of another, and percent increase or decrease—instant, free, and private in your browser.