Conversor de Decimal para Porcentagem
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
porcentagem = decimal × 100
About this calculator
The Decimal to Percentage Converter is a simple and fast tool to transform decimal numbers into their percentage equivalents. Simply enter a decimal value, such as 0.25 or 1.5, and the calculator instantly displays the corresponding percentage, following the formula: percentage = decimal × 100. For example, 0.25 becomes 25%.
This calculator is useful in various everyday situations, such as calculating discounts on purchases, interpreting interest rates, analyzing statistical data, or converting school grades. In finance, it helps quickly understand percentages of growth or reduction. It is also handy for students who need to verify conversions in math exercises.
When using the tool, remember that decimals greater than 1 result in percentages above 100%, which is perfectly valid in contexts like percentage increases. For negative decimals, the percentage will be negative, indicating a reduction. Make sure to enter the number in the correct format (use a dot as the decimal separator, e.g., 0.25) to avoid errors.
The calculator is free, requires no registration, and works on any device. It is ideal for those who need quick conversions without complications, whether at work, in studies, or in daily life.
Frequently asked questions
How do I convert 0.75 to a percentage?
Simply multiply 0.75 by 100, resulting in 75%. In the calculator, enter 0.75 and see the result.
What does a percentage greater than 100% mean?
It indicates that the decimal value is greater than 1, representing an increase or proportion above the whole. For example, 1.5 equals 150%.
Can I convert percentages back to decimal?
Yes, divide the percentage by 100. For example, 25% divided by 100 is 0.25.
Does the calculator accept negative numbers?
Yes, negative numbers generate negative percentages, useful for representing reductions. For example, -0.2 becomes -20%.
Should I use a dot or a comma as the decimal separator?
Use a dot (.) as the decimal separator, following the international standard. Example: 0.25, not 0,25.