Checked reference
Fabric Unit Conversion Chart
All values on this chart are generated from the same core conversion factors used by the calculators. Display decimals may be shortened, while calculations retain the converted physical length until final presentation.
Reviewed on 2026-07-13.
| Item | Starting length | Equivalent length | Note |
|---|---|---|---|
| 1 inch | 25.4 millimeters | Exact definition. | |
| 1 yard | 36 inches | Also 914.4 millimeters. | |
| 1 meter | 1.093613 yards | Display rounded to six decimals. | |
| 10 centimeters | 3.937008 inches | Do not round before checking fit. |
Variables and units
m = physical length in millimetersf(u) = millimeters per selected unitvalue in unit u = m ÷ f(u)
Worked example
67 inches is 1,701.8 millimeters. A seller using 10-centimeter increments requires an upward purchase of 180 centimeters.
Cautions
- Keep length separate from area.
- Commercial pattern and seller units must both be read explicitly.
Specific commercial pattern instructions take precedence whenever they differ from this general reference.