Decimal to Fraction Calculator
Convert any decimal number into its simplest fraction quickly and accurately.
How It Works
The decimal is converted into a fraction and reduced to its simplest form.
Quick Examples
What is the Decimal to Fraction Calculator used for?
The Decimal to Fraction Calculator is used to change a decimal number into its equivalent fraction. It is helpful when working with measurements, school mathematics, recipes, or calculations where fractions are easier to use. For example, a decimal such as 0.75 can be written as 3/4. The conversion preserves the value while expressing it in a different mathematical form.
How do I convert a decimal into a fraction?
For a terminating decimal, first write the number over a power of 10 based on the number of decimal places. For example, 0.625 has three decimal places, so it becomes 625/1000. Then simplify the fraction by dividing the numerator and denominator by their greatest common factor. In this case, 625/1000 simplifies to 5/8.
How is a decimal fraction simplified?
After the decimal is written as a fraction, divide both the numerator and denominator by their greatest common divisor. For example, 0.6 becomes 6/10. Since both numbers are divisible by 2, the fraction reduces to 3/5. This process is known as simplifying fractions and produces an equivalent fraction with smaller whole numbers when possible.
How can I check whether a decimal to fraction result is correct?
=A simple check is to divide the numerator by the denominator and compare the result with the original decimal. For example, if a decimal to fraction conversion gives 5/8 for 0.625, calculate 5 ÷ 8 = 0.625. For terminating decimals, this provides a direct way to confirm that the equivalent fraction represents the same value.
What common mistakes should I avoid when converting decimals to fractions?
Watch for misplaced decimal digits, incorrect powers of 10, and failure to simplify the final fraction. For example, 0.45 should initially be written as 45/100, not 45/10. Another common mistake is treating a repeating decimal as though it were terminating. When doing a decimal conversion, check the number of decimal places and reduce the fraction only after forming it correctly.