Decimal to Fraction Calculator
Last updated: July 2026
Convert a decimal number into a simplified fraction using an adjustable precision limit.
Simplified fraction
—
- Approximation as a decimal: —
- Absolute approximation error: —
- Mixed-number form: —
On this page
Quick summary: Convert a decimal number into a simplified fraction using an adjustable precision limit. Enter the requested values, calculate, review the result, and compare more than one realistic scenario before making a decision.
Read the complete guide
What this calculator estimates
Convert a decimal number into a simplified fraction using an adjustable precision limit. It is designed for fast planning and comparison in the United States. The output is an estimate, not a binding quote, approval, tax determination, insurance offer, legal conclusion, medical recommendation or professional advice.
How to use it
Enter the requested values using a single consistent time period and currency. Select Calculate, review the headline result and supporting figures, then change one assumption at a time to compare another scenario.
How the calculation works
The calculator tests denominators up to the selected limit and chooses the fraction with the smallest absolute error, then simplifies it.
Important limitations
Repeating or irrational decimals are approximated. Higher denominator limits can produce closer but less readable fractions.
Frequently asked questions
Is the result exact?
No. It is a planning estimate based on the assumptions entered.
Can I compare different scenarios?
Yes. Change one input at a time so you can see which assumption changes the result.
Does the calculator store my inputs?
The calculation runs in the browser and does not require an account. Avoid entering unnecessary confidential information.