0.4 as a Fraction - Decimal to Fraction Calculator

Solution:

0.4 in fraction form is 2/5

Follow along to see how to convert decimals like this to a fraction.

How to Convert 0.4 to a Fraction

You can convert 0.4 to fraction form by following a few easy steps.

Convert the decimal into a fraction by putting the decimal over 1 in fraction format.
0.4=.4 / 1
Multiply the numerator and denominator by 10 to eliminate decimal places.
0.4 × 10 / 1 × 10=4 / 10
Reduce the fraction by finding the greatest common factor (GCF) of the numerator and denominator.
GCF of 4 and 10 = 2
Divide the numerator and denominator by the greatest common factor (2).
4 ÷ 2 / 10 ÷ 2=2 / 5

The process to convert fractions back to decimals is a bit different; learn how to express 2/5 as a decimal.

Decimal to Fraction Calculator

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We cover this in much more detail on our decimal to fraction calculator, including how to convert repeating decimals to fractions.

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