Mixed Number to Improper Fraction Calculator

Quick answer

This calculator converts a mixed number such as 3 2/5 into an improper fraction, and gives the decimal value. It is a common step before multiplying or dividing fractions.

Improper numerator
—
Denominator
—
Decimal value
—

Mixed numbers are easy to read, but improper fractions are easier to calculate with.

How to use the Mixed Number to Improper Fraction Calculator

  1. Whole number
  2. Numerator
  3. Denominator

Results update as you type, and every field accepts the units shown in its menu.

How it works

Multiply the whole number by the denominator, add the numerator, and keep the same denominator.

Inputs explained

Field What to enter
Whole number A number
Numerator A number
Denominator A number

Formula

Improper numerator = whole × denominator + numerator

Worked example

Inputs — Whole number: 3; Numerator: 2; Denominator: 5.
Results — Improper numerator = 17; Denominator = 5; Decimal value = 3.4.

Frequently asked questions

How do I go back to a mixed number?

Divide numerator by denominator: the quotient is the whole part and the remainder the new numerator.

Is 17/5 simplified?

Yes, 17 and 5 share no common factor.

What formula does the Mixed Number to Improper Fraction Calculator use?

Improper numerator = whole × denominator + numerator.

Cite this calculator

Speedy Calculator. (2026). Mixed Number to Improper Fraction Calculator. Speedy Calculator. https://speedycalculator.com/calculators/math/mixed-number/