Percent to Decimal Converter
Convert a percentage to a decimal, or a decimal to a percentage — pick a direction below.
Converting Between Percents and Decimals
Percentages and decimals express the same value in two different formats. Spreadsheets, programming languages, and most math formulas expect decimals, while percentages are easier for people to read at a glance — so converting between them is one of the most common small tasks in everyday math.
decimal = percent ÷ 100 | percent = decimal × 100
In practice, this is just shifting the decimal point two places: 45% → 0.45, and 0.07 → 7%. If you need the reverse — a decimal expressed as a fraction — divide the decimal's numerator over a power of 10 and simplify.
Frequently Asked Questions
How do you convert a percent to a decimal?
Divide the percentage by 100, which is the same as moving the decimal point two places to the left. For example, 45% becomes 0.45.
How do you convert a decimal to a percent?
Multiply the decimal by 100, which is the same as moving the decimal point two places to the right, then add a percent sign. For example, 0.07 becomes 7%.
Why do percentages need to be converted to decimals?
Most math operations, spreadsheet formulas, and programming languages expect a decimal rather than a percent sign, so converting first prevents calculation errors.