How to convert 0.8 to a fraction?

0.8 = 8/10 Then simplify to 4/5.

0.8 terminating or repeating?

It is a terminating decimal. The simplest fraction is 4/5.

Quick Convert (enter a decimal)

Open Full Converter

0.8 =

0.8

(1 decimal place → denominator 10)

8/10

→ simplify ÷2

(divide numerator and denominator by 2)

Step 1: 0.8 has 1 decimal place, so write it as 8/10.

Step 2: Divide numerator and denominator by 2: 8/10 → 4/5.

Property: In simplest terms, denominators with prime factors only 2 and/or 5 produce terminating decimals.

Why can 0.8 be converted to a fraction?: Decimals can be expressed as fractions by using place value and simplifying.
0.8 terminating or repeating?: It is terminating.
Can it be simplified further?: 4/5 is simplest.

Percentage & Ratio: 0.8 can be interpreted as 4/5 in practical scenarios like discounts and rates.

Statistics: A proportion of 0.8 often represents a 80% probability — for example, a 80% significance level (p-value) in experiments or surveys.

Finance: Rates expressed with 0.8 (e.g., 80%) appear in returns and fees.