Convert any percentage into its decimal form instantly.
As a Decimal
0.45
Percentages and decimals represent the same idea in two different formats โ "45%" and "0.45" mean exactly the same proportion, just written differently. Converting between them is needed constantly when doing further maths, since most calculations (like the ones on this whole site) work with the decimal form internally.
This tool converts a percentage into its decimal equivalent instantly โ useful when plugging a rate into a spreadsheet formula, a calculator, or any other tool that expects a plain decimal rather than a percentage sign.
Formula
Decimal = Percentage รท 100
Simply move the decimal point two places to the left.
Worked Example
Worked example
The quick mental shortcut
You do not need to actually divide โ just move the decimal point two places to the left. 7% becomes 0.07, 120% becomes 1.2, and 0.5% becomes 0.005.
Why this matters for calculations
Every percentage formula on this site โ increase, decrease, markup, interest โ actually works with the decimal form behind the scenes. Understanding this conversion makes it much easier to follow (and double-check) any percentage calculation by hand.
Frequently Asked Questions
How do I convert a percentage to a decimal?
Divide the percentage number by 100, or equivalently, move the decimal point two places to the left.
What is 100% as a decimal?
100% as a decimal is 1 โ it represents "the whole thing."
What is 0.5% as a decimal?
0.5% as a decimal is 0.005 โ small percentages produce small decimals with more leading zeros.
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