Percent to Decimal Calculator – With Formulas and Examples

Convert a percentage to a decimal value using the calculator below. Enter the percentage without the % symbol and submit to see the decimal value. Use our decimal to percent calculator to convert a decimal to a percentage.

Result:

50% = 0.5

Start with the formula to convert a percentage to a decimal
d=
percentage
100
Substitute the percentage in the equation
d=
50
100
Solve
d=0.5


How to Convert a Percentage to a Decimal Value

Often a percent value will need to be converted to decimal form to allow it to be used in other equations. The decimal form will not have the symbol.

Since percent literally means “per 100” converting to a decimal form is as simple as dividing the percentage by 100 and removing the % symbol. See the formula below:

d = p ÷ 100

One way to divide by 100 is to simply move the decimal point to the left 2 places. For example:

27.5 ÷ 100 = .275

Red percent symbol

To convert a decimal back to a percentage use our decimal to percent calculator.

Example: convert 48.5% to a decimal


d = p ÷ 100
d = 48.5 ÷ 100
d = .485

See our complete set of percentage calculators for solving many types of problems.

Common Percentage Values and the Equivalent Decimal Values

Common percent and decimal equivalents
Percent Decimal Percent Decimal
.1% .001 10% .1
.2% .002 20% .2
.3% .003 30% .3
.4% .004 40% .4
.5% .005 50% .5
1% .01 100% 1
2% .02 200% 2
3% .03 300% 3
4% .04 400% 4
5% .05 500% 5