AWG Wire Gauge Chart (Printable PDF and Excel)
This American Wire Gauge (AWG) chart lists every size from 4/0 down to 40 AWG with the diameter in inches and millimetres, the cross-section in mm² and kcmil, and the resistance of solid copper per 1,000 feet and per kilometre at 20 °C.
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- 2 pages
- US Letter — choose “Fit to page” for A4
- PDF, 6 KB
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The values are calculated from the AWG definition used in ASTM B258, so they are exact for solid round wire; stranded conductors are a little larger. Use it to compare gauges, convert AWG to metric sizes or estimate voltage drop. For ampacity, follow the NEC or your local code tables.
Good for
- Converting AWG sizes to mm and mm²
- Looking up copper resistance per 1000 ft for voltage-drop estimates
- A bench reference for electronics and wiring projects
Tip: Every 3 gauges roughly doubles or halves the cross-section area; every 6 gauges roughly doubles or halves the diameter.
4 files · XLSX, PDF, DOCX
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