How do I turn a mixed number into an improper fraction?

Multiply the whole part by the denominator, add the numerator, and keep the denominator: 1 3/4 becomes (1 × 4 + 3)/4 = 7/4.

Why would I want the improper form?

Arithmetic. Adding, multiplying and comparing all work directly on improper fractions; the mixed form is for reading a tape measure and saying the number out loud.

Mixed number → improper fraction

Type a mixed number like 1 3/4 (the tape-measure habit 1-3/4 works too).

Try:

Common questions

How do I turn a mixed number into an improper fraction?: Multiply the whole part by the denominator, add the numerator, and keep the denominator: 1 3/4 becomes (1 × 4 + 3)/4 = 7/4.
Why would I want the improper form?: Arithmetic. Adding, multiplying and comparing all work directly on improper fractions; the mixed form is for reading a tape measure and saying the number out loud.

Where this comes from. Exact rational arithmetic on the values shown — fractions are pairs of integers until display, and inch–metric conversion uses 25.4 mm to the inch, exact by definition since 1959. See the full methodology.