Rex says
The fast lane for the math you almost remember from school. Type the numbers, get the answer, move on with your day.
Try a scenario
Click to load — tweak from there.Inputs
Result
Decimal
0.875000
Percentage
87.5000%
Simplest form
7/8
Mixed number
7/8
Psst — share this and help Rex grow
One click, a permanent link with your numbers baked in.
How to use this
- 1Enter numerator.
- 2Enter denominator.
- 3Read your decimal on the right — it updates as you type.
- 4Hit Share to keep the scenario or send it to someone.
About this calculator
Converts a fraction into its decimal and percentage equivalents, reduces it to lowest terms, and shows it as a mixed number when the numerator is larger than the denominator.
Worked example
Using the values the calculator loads with:
Inputs
- Numerator: 7
- Denominator: 8
Results
- Decimal: 0.875
- Percentage: 87.5000%
- Simplest form: 7/8
- Mixed number: 7/8
What each field means
Inputs
- Numerator
- The numerator used in the calculation. Starts at 7 so you have a working example on load.
- Denominator
- The denominator used in the calculation. Starts at 8 so you have a working example on load.
Results
- Decimal
- Returned as a decimal number and shown as the headline result. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Percentage
- Returned as a percentage. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Simplest form
- Returned as a plain value. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
- Mixed number
- Returned as a plain value. It recalculates instantly whenever you change an input, so you can compare scenarios without reloading.
FAQ
How does the fraction to decimal converter work?
Converts a fraction into its decimal and percentage equivalents, reduces it to lowest terms, and shows it as a mixed number when the numerator is larger than the denominator. The underlying maths is: Decimal = numerator ÷ denominator. Simplify by dividing both by their greatest common divisor.
What do I need to enter?
2 values: numerator, and denominator. Each field starts with a sensible default, so you can change one number at a time and watch the result move.
What does the decimal result mean?
It is returned as a decimal number and updates live as you edit the inputs, so you can compare two or three versions of a scenario in a few seconds.
Is this calculator free, and do I need an account?
Yes, it's free, and no account is required. Nothing you type is stored on our servers — the maths runs entirely in your browser.
How accurate is the result?
It applies the standard formula exactly, so the arithmetic is precise. Results are rounded for display; the underlying calculation keeps full precision.
Who is this tool for?
It's built for students, developers, and anyone who needs the answer right now without setting up a spreadsheet.
Accuracy and limitations
- Results are rounded for display; the underlying calculation keeps full precision.
- Very large or very small inputs may hit floating-point limits in the browser.
- Inputs outside the accepted range are clamped rather than rejected.
Related tools
Cite this calculator
Writing about this topic? Grab a citation — every link helps keep these tools free.
RevenueLab. (2026). Fraction to Decimal Converter. Retrieved from https://www.revenuelab.fyi/toolbox/fraction-to-decimal
<p>Source: <a href="https://www.revenuelab.fyi/toolbox/fraction-to-decimal" target="_blank" rel="noopener">Fraction to Decimal Converter — RevenueLab</a> (2026).</p>
Source: [Fraction to Decimal Converter — RevenueLab](https://www.revenuelab.fyi/toolbox/fraction-to-decimal) (2026).