How this calculation works
Reduce the original fraction first to tell which target denominators are possible. Any multiple of its reduced denominator works.
New numerator = old numerator × target denominator / old denominatorA worked example
3/4 = 15/20 because the target denominator is five times larger.
Good to know
Some denominators cannot represent the same fraction with an integer numerator.
Reference: OpenStax Prealgebra (opens in a new tab) ↗
Read the result
Find the whole numerator that preserves a fraction at a specified denominator.
The primary result is labeled “Equivalent fraction”. Keep the input definitions in view when comparing this result with another method.
Try a related calculation
Some denominators cannot represent the same fraction with an integer numerator.
For a related exercise, try the fraction calculator.
A few questions, answered
How can I check the default inputs by hand?
3/4 = 15/20 because the target denominator is five times larger.
Which rule does this calculator apply?
New numerator = old numerator × target denominator / old denominator