# Decimal to Fraction Calculator

## Calculator Use

This calculator converts a decimal number to a fraction.

How many decimal places repeat? If you are converting a repeating decimal to a fraction, enter the number of decimal places that repeat.

## Convert a Decimal to a Fraction

- Make a fraction with the decimal number as the numerator (top number) and a 1 as the denominator (bottom number).
- Remove the decimal places by multiplication: Count how many places are to the right of the decimal. If you have x decimal places then multiply numerator and denominator by 10
^{x}. - Reduce the fraction: Find the Greatest Common Factor (GCF) of the numerator and denominator and reduce the fraction by dividing both numerator and denominator by the GCF.
- Simplify the remaining fraction to a mixed number fraction if possible.

### Example: Convert 2.625 to a fraction

1. Rewrite the decimal number number as a fraction (over 1)

2. Multiply numerator and denominator by by 10^{3} = 1000 to eliminate 3 decimal places

3. Find the Greatest Common Factor (GCF) of 2625 and 1000 and reduce the fraction, dividing both numerator and denominator by GCF = 125

4. Simplify the improper fraction

Therefore,

#### Decimal to Fraction

- For another example, convert 0.625 to a fraction.
- Multiply 0.625/1 by 1000/1000 to get 625/1000.
- Reducing we get 5/8.

## Convert a Repeating Decimal to a Fraction

- Create an equation such that x equals the decimal number.
- Count the number of decimal places, y. Create a second equation multiplying both sides of the first equation by 10
^{y}. - Subtract the second equation from the first equation.
- Solve for x
- Reduce the fraction.

### Example: Convert repeating decimal 2.666 to a fraction

1. Create an equation such that x equals the decimal number

Equation 1:

2. Count the number of decimal places, y. There are 3 digits in the repeating decimal group, so y = 3. Ceate a second equation by multiplying both sides of the first equation by 10^{3} = 1000

Equation 2:

3. Subtract equation (1) from equation (2)

We get

4. Solve for x

5. Reduce the fraction. Find the Greatest Common Factor (GCF) of 2664 and 999 and reduce the fraction, dividing both numerator and denominator by GCF = 333

Simplify the improper fraction

Therefore,

#### Repeating Decimal to Fraction

- For another example, convert repeating decimal 0.333 to a fraction.
- Create the first equation with x equal to the repeating decimal number:

x = 0.333 - There are 3 repeating decimals. Create the second equation by multiplying both sides of (1) by 10
^{3}= 1000:

1000X = 333.333 (2) - Subtract equation (1) from (2) to get 999x = 333 and solve for x
- x = 333/999
- Reducing the fraction we get x = 1/3
- Answer: x = 0.333 = 1/3

## Related Calculators

To convert a fraction to a decimal see the Fraction to Decimal Calculator.

#### References

Wikipedia contributors. "Repeating Decimal," Wikipedia, The Free Encyclopedia. Last visited 18 July, 2016.

**Cite this content, page or calculator as:**

Furey, Edward "Decimal to Fraction Calculator"; from *http://www.calculatorsoup.com* - Online Calculator Resource.