thou to mm Converter
Convert Thou to mm instantly.
Free online converter with accurate results and clear explanations.
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Frequently Asked Questions
Common questions about the thou to mm Converter
A thou (mil) is 1/1000 inch = 25.4 micrometers. Used in engineering, manufacturing, and for measuring thin materials like paper and wire.
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Sources & References
International System of Units (SI): length and distance
Length and distance is measured in the metre (m); 1 inch = 25.4 mm exactly. Conversions between SI and other units use exact, internationally agreed factors maintained by NIST.
International System of Units (SI)
Authoritative definitions for length and distance, from the BIPM SI Brochure (9th edition), the defining reference for the SI.