# Measurement converter

> Convert common craft lengths between metric and imperial units.

- [Open tool](https://threadcabin.com/tools/measurement-converter)
- The page shows its formula, example, assumptions, rounding, and limitations beside the calculator.

## Formula and assumptions

Length conversions use exact standard factors before the displayed value is rounded.

## Worked example

Example: 100 centimetres displays as about 39.4 inches at practical precision; the optional detail control shows 39.3701.

## Limits and rounding

Results are planning estimates from the values entered. Displayed decimals are rounded for craft use; whole materials and repeats round up where the method says so. Confirm gauge, material behavior, construction, and finished measurements before committing supplies.