PCB DESIGN CONVERTER
PCB mil / mm / µm Converter
Convert PCB dimensions between mil, millimetre and micrometre for fabrication notes, trace/spacing discussions and supplier documentation.
Results
mil6 mil
Millimetres0.1524 mm
Micrometres152.4 µm
Engineering method
One mil is one-thousandth of an international inch. The international inch is defined exactly as 25.4 mm, therefore 1 mil = 0.0254 mm = 25.4 µm.
Model / conversion relationship
mm = mil × 0.0254; µm = mil × 25.4.
mm = mil × 0.0254; µm = mil × 25.4.
Professional references
These references establish the standards, technical framework or authoritative engineering context used for this page. Vendor commercial terms are not used as engineering evidence.
- BIPM SI Brochure, 9th edition, updated 2026 — Primary international reference for SI units and unit expression.
- NIST Special Publication 811, Guide for the Use of the International System of Units — U.S. NIST guidance for SI use and unit conversions.
- IPC Board Design Standards — Industry standards family for printed-board design and related requirements.
Engineering-use note. This PROFENG resource is for screening, comparison and technical preparation. Replace assumptions with project data and use the responsible qualified professional, applicable standards, codes and authority requirements for final design, compliance or safety decisions.
Commercial independence
PROFENG may display a separately disclosed approved partner after the engineering content. Partner status never changes formulas, conversion factors, procurement criteria, technical references or calculation results. Pending and unapproved programs remain hidden.