Fraction Comparison Calculator
Compare two fractions to see which is greater, smaller or equal.
Comparison
3/4 > 5/7
3/4 is greater
3/4 as decimal
0.75
5/7 as decimal
0.714286
About the Fraction Comparison Calculator
The AlarmDaddy Fraction Comparison Calculator tells you at a glance whether one fraction is greater than, less than, or equal to another. Enter two fractions and it compares them by cross-multiplication and also shows each as a decimal so you can see why.
It is a quick helper for maths homework, cooking measurements and any time two fractions are hard to compare by eye — like 3/4 versus 5/7.
How to use this calculator
- 1Enter the first fraction (numerator and denominator).
- 2Enter the second fraction.
- 3Read which is greater, and each fraction as a decimal.
The formula
To compare two fractions without finding a common denominator, cross-multiply: a/b is greater than c/d exactly when a×d is greater than c×b (for positive denominators). The calculator also converts each fraction to a decimal for confirmation.
Frequently asked questions
3/4 is bigger. 3/4 is 0.75 and 5/7 is about 0.714, and cross-multiplying gives 21 versus 20.