About Us

Length Tools is a free length converter focused on everyday metric and imperial sizes — millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.

What you get

The site is built around practical conversion: live unit converters, decimal inches, the nearest 1/64 fraction when inches are involved, conversion charts, and drill-bit / socket size checks. Start from the homepage, browse the length converters, or open the mm to inches converter.

How values are calculated

Length conversions use exact SI factors. In particular, the international definition 1 inch = 25.4 mm is the source of truth for inch-related results. When a fraction is shown, the converter rounds to the nearest 1/64 inch and reports how far that fraction sits from the exact decimal size (in millimeters), so you can see the approximation clearly.

Accuracy

Results are for general information and everyday reference. Always verify critical measurements before machining, purchasing, or fitting parts. Fractional inches on tools may use coarser ticks than 1/64; match the marking system you are using.

Contact

Questions or corrections: [email protected].