Fraction Calculator
Add, subtract, multiply and divide fractions with simplification.
Frequently Asked Questions
How do you add fractions with different denominators?
Convert both to a common denominator: multiply each numerator and denominator so both denominators match, add the numerators, then simplify the result by dividing top and bottom by their greatest common divisor.
How do you divide fractions?
Keep the first fraction, flip the second (its reciprocal) and multiply. Dividing by 1/3 is the same as multiplying by 3, which is why the answer gets bigger.
What does simplifying a fraction mean?
It means dividing numerator and denominator by their greatest common divisor so the fraction is in its lowest terms: 6/8 simplifies to 3/4 because both share a factor of 2.
Is the Fraction Calculator free, and is my data private?
Yes. It is completely free and every calculation runs locally in your browser, so the numbers and dates you enter are never uploaded, stored, or shared with anyone.
Related Tools
Percentage Calculator
Calculate percentages easily. Find what percent of a number is.
Ratio Calculator
Simplify any ratio to its lowest terms, see each part as a percentage share, and scale the ratio up or down to match a total amount you specify here.
Scientific Calculator
Full-featured scientific calculator with trigonometric and logarithmic functions.
Average Calculator
Calculate the mean, median, mode, range, sum and count of any list of numbers you paste in, separated by commas, spaces or lines, in a single click.