How do you add fractions with different denominators?

Find a common denominator (b × d), convert numerators (ad + bc), add the numerators together, and simplify the result.

What is a mixed number?

A mixed number combines a whole number integer and a proper fraction (e.g. 1 3/4 equals 7/4).

Divide both the numerator and denominator by their Greatest Common Divisor (GCD).

No, division by zero is mathematically undefined. Denominators must be non-zero integers.

Input numerator and denominator for the first fraction.

Choose Addition (+), Subtraction (−), Multiplication (×), or Division (÷).

Input numerator and denominator for the second fraction.

Inspect the reduced fraction, mixed number, and decimal equivalent.

Core arithmetic formulas for combining fractions:

Addition: a/b + c/d = (ad + bc) / bd
Multiplication: a/b × c/d = (ac) / (bd)
Division: (a/b) ÷ (c/d) = (ad) / (bc)

Supports Addition, Subtraction, Multiplication, and Division

Automatic lowest-terms reduction via GCD

Displays improper fractions and mixed numbers

Calculates decimal equivalent

Prevents zero-denominator errors

To divide fractions, multiply the first fraction by the reciprocal (flip) of the second fraction.
Find the Greatest Common Divisor (GCD) to simplify fractions to lowest terms.

Perform advanced mathematical, trigonometric, logarithmic, and power calculations.

Calculate percentages, exam marks percentage, discounts, and proportion ratios.

Calculate your college or high school Grade Point Average on a 4.0 weighted scale.