Enter each fraction as a whole number (optional), numerator and denominator. Leave the whole part at 0 for a plain fraction.
To add or subtract, convert both fractions to a common denominator, then combine the numerators: 1/2 + 1/3 = 3/6 + 2/6 = 5/6. To multiply, multiply the numerators and the denominators: 1/2 × 1/3 = 1/6. To divide, multiply by the reciprocal of the second fraction: 1/2 ÷ 1/3 = 1/2 × 3/1 = 3/2. The result is then reduced by dividing by the greatest common divisor.
Find a common denominator (the product of both denominators always works), rewrite each fraction, add the numerators and simplify. The calculator does all of this for you.
2 1/4 means whole = 2, numerator = 1, denominator = 4. Mixed numbers are converted to improper fractions (9/4) before calculating.
Divide the numerator by the denominator. 3/4 = 0.75.
Yes, put the minus sign on the whole part or the numerator. For a negative mixed number such as −2 1/4, enter whole = −2.
See also: Ratio Calculator · Percentage Calculator · Average Calculator