Inches to Nearest Fraction

in
Conversion

Convert decimal inches to the nearest standard fraction (1/2, 1/4, 1/8, 1/16, 1/32, 1/64).

Formula

numerator = round(decimal_fraction × denominator); simplify by GCD
  • 16ths and 32nds are common in carpentry; 64ths in machining.

Inches to Nearest Fraction Example

Inputs
  • Decimal Inches: 0.625 in
  • Denominator: 8

0.625 in = round(0.625 × 8)/8 = 5/8 in

Frequently asked questions

How do I use the Inches to Nearest Fraction?
Enter the value in the input field and the result updates immediately.
How accurate is this converter?
Uses internationally recognised conversion factors. Results are rounded to the displayed decimal places.
Can I verify this manually?
Yes — apply the formula shown above step by step.