Decimal Calculator
Convert a decimal to a fraction, percent and scientific notation.
- Percent
- 37.5%
- Scientific notation
- 3.75e-1
- Rounded to 2 places
- 0.38
How this calculator works
The number of digits after the decimal point sets a power-of-ten denominator. The fraction is then reduced to lowest terms.
Formula
0.375 = 375/1000 = 3/8
Example
0.375 becomes 375/1000, which reduces to 3/8, or 37.5%.
When to use it
- Reading measurements in inches
- Converting test scores
- Checking calculator output
Frequently asked questions
How do I convert a repeating decimal?
Repeating decimals such as 0.333… are fractions with denominators like 3 or 9. Enter enough digits and the calculator finds the closest simple fraction.
How do I turn a decimal into a percent?
Multiply by 100. For example, 0.375 becomes 37.5%.
Learn more
Scientific notation explained: how to read, write and use it
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How to simplify fractions: three methods, from quick to foolproof
Three reliable ways to reduce a fraction to lowest terms, including a method that works on any numbers, however large.
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