Fraction Calculator

This tool performs arithmetic on two fractions and returns the exact simplified result. It supports add, subtract, multiply, and divide, accepts integer numerators and non-zero integer denominators for both fractions, and outputs the simplified fraction, its decimal equivalent, and a mixed-number form when the result is improper. The simplified fraction is also shown visually with a numerator-over-denominator layout.

1. Enter Fraction A by typing its Numerator and Denominator into the two stacked inputs. 2. Pick an Operation button: +, -, x, or /. 3. Enter Fraction B the same way. 4. Press Calculate. The result card shows the simplified fraction visually, plus rows for Simplified fraction, Decimal value, and Mixed number (only shown if the simplified result is improper). Use Copy to copy the fraction string; use Clear to reset.

Add: result = (a*d + b*c) / (b*d). Subtract: (a*d - b*c) / (b*d). Multiply: (a*c) / (b*d). Divide: (a*d) / (b*c). After the raw result the sign is normalized to the numerator, the fraction is reduced by gcd(numerator, denominator), and if the absolute numerator is at least the denominator a mixed number is produced as whole = trunc(num/den), remainder = abs(num) mod den. Denominators of zero, and a divide-by-zero second fraction, are rejected with an error message.