To convert a decimal to a percentage, multiply the decimal by 100 and add the percent sign. This is equivalent to moving the decimal point two places to the right. For example, 0.75 multiplied by 100 equals 75%, while 1.25 becomes 125%.
Enter a numerator and denominator to calculate the percentage, decimal, simplified fraction, ratio, and conversion steps.
Multiplication by 100 changes a decimal into an equivalent percentage.
Decimal to Percentage Formula
Multiply the decimal by 100 and add the percent sign.
A percentage expresses the same value as an amount out of 100.
A decimal may also come from dividing a fraction in the Fraction to Percentage Calculator.
Move the Decimal Point Two Places
Multiplying by 100 moves the decimal point two places to the right.
The decimal 0.45 becomes 45.
Add the percent sign to write the final result as 45%.
Example: Convert 0.75 to a Percentage
Multiply 0.75 by 100.
The result is 75.
Therefore, 0.75 equals 75%.
Example: Convert 0.08 to a Percentage
Move the decimal point in 0.08 two places to the right.
The result is eight.
Therefore, 0.08 equals 8%.
Example: Convert 0.005 to a Percentage
Multiply 0.005 by 100.
The result is 0.5.
Therefore, 0.005 equals 0.5%.
Decimals Greater Than One
A decimal greater than one produces a percentage greater than 100%.
For example, 1.25 multiplied by 100 equals 125%.
This result represents one complete whole plus one quarter.
A value greater than one represents more than one whole, so its equivalent percentage is greater than 100%.
Convert a Whole Number to a Percentage
Whole numbers can be treated as decimals.
The number one equals 1.0, and multiplying by 100 gives 100%.
The number three equals 300%.
Negative Decimals
Multiply a negative decimal by 100 in the same way.
For example, minus 0.4 multiplied by 100 equals minus 40%.
Keep the negative sign in the final percentage.
Repeating Decimals
A repeating decimal creates a repeating percentage.
For example, 0.3333 continuously becomes 33.3333...%.
Round only the final percentage when a fixed number of decimal places is required.
Decimal, Fraction, and Percentage Equivalents
Decimals, fractions, and percentages can represent the same quantity.
For example, 0.5 equals 1/2 and 50%.
Similarly, 0.25 equals 1/4 and 25%.
| Decimal | Fraction | Percentage |
|---|---|---|
| 0.1 | 1/10 | 10% |
| 0.25 | 1/4 | 25% |
| 0.5 | 1/2 | 50% |
| 0.75 | 3/4 | 75% |
| 1 | 1/1 | 100% |
Percentage to Decimal Is the Reverse
To convert a percentage back to a decimal, divide by 100.
This moves the decimal point two places to the left.
For example, 75% becomes 0.75.
Common Mistakes
Do not add 100 to the decimal; multiply it by 100.
Do not move the decimal point only one place.
Keep leading zeros when the result is below one percent.
Do not remove a negative sign.
Conclusion
Multiply the decimal by 100 and add the percent sign.
Moving the decimal point two places to the right performs the same operation.
Use the Fraction to Percentage Calculator when the decimal begins as a fraction.
FAQs
How do I convert a decimal to a percentage?
Multiply the decimal by 100 and add the percent sign.
What is 0.75 as a percentage?
Zero point seven five multiplied by 100 equals 75%.
What is 0.005 as a percentage?
It equals 0.5%.
Can a decimal produce more than 100%?
Yes. A decimal greater than one produces a percentage greater than 100%.
How do I convert a percentage back to a decimal?
Divide the percentage value by 100.