Math calculator
Decimal ↔ Fraction Converter
Convert between decimals and fractions.
About the decimal ↔ fraction converter
The decimal-fraction converter converts between decimal numbers and fractions.
How to use this calculator
- 1
Enter value
Enter a decimal number or a fraction's numerator and denominator.
- 2
Choose direction
Select decimal to fraction or fraction to decimal.
- 3
View results
See the converted value.
How the calculation works
Decimal to fraction: finds simplest fraction within tolerance. Fraction to decimal: num ÷ den.
Example: 0.75 = 3/4. 3/4 = 0.75.
When to use a calculator vs. mental math
Simple operations like percentages and proportions are great for mental math. Complex problems — quadratic equations, standard deviation, and base conversions — benefit from calculator precision. Always estimate the answer first to catch input errors, and verify results with a second method when possible.
Important limitations
This tool provides a mathematical estimate based only on the values entered. It does not account for regulations, taxes, lender fees, market conditions, or individual circumstances. Results are for planning purposes only — consult a qualified professional for regulated, medical, financial, or construction decisions.
Frequently asked questions about decimal ↔ fraction converter
How accurate is the decimal fraction converter?+
The calculation follows the displayed formula and retains full numeric precision before formatting the result.
Can I use the result professionally?+
Use it as a planning estimate. Confirm regulated, medical, financial, or construction decisions with a qualified professional.