Wire Gauge Converter (AWG ↔ mm²)
American Wire Gauge to metric cross-section
⚡ Convert AWG sizes to metric mm² and back. ⚠️ Ampacity depends on insulation, installation method and temperature — for real wiring follow the NEC and local code; see NFPA (NEC publisher).
AWG → mm²
mm² → nearest AWG
AWG Chart (area · nearest metric · ampacity)
| AWG | Area | Nearest metric | Ampacity (A)† |
|---|---|---|---|
| 4/0 AWG | 107.22 ㎟ | 95 ㎟ | 230 |
| 3/0 AWG | 85.03 ㎟ | 70 ㎟ | 200 |
| 2/0 AWG | 67.43 ㎟ | 70 ㎟ | 175 |
| 1/0 AWG | 53.48 ㎟ | 50 ㎟ | 150 |
| 1 AWG | 42.41 ㎟ | 35~50 ㎟ | 130 |
| 2 AWG | 33.63 ㎟ | 35 ㎟ | 115 |
| 4 AWG | 21.15 ㎟ | 25 ㎟ | 85 |
| 6 AWG | 13.30 ㎟ | 16 ㎟ | 65 |
| 8 AWG | 8.37 ㎟ | 10 ㎟ | 50 |
| 10 AWG | 5.26 ㎟ | 6 ㎟ | 35* |
| 12 AWG | 3.31 ㎟ | 4 ㎟ | 25* |
| 14 AWG | 2.08 ㎟ | 2.5 ㎟ | 20* |
| 16 AWG | 1.31 ㎟ | 1.5 ㎟ | - |
| 18 AWG | 0.82 ㎟ | 0.75~1.0 ㎟ | - |
| 20 AWG | 0.52 ㎟ | 0.5 ㎟ | - |
| 22 AWG | 0.33 ㎟ | 0.3 ㎟ | - |
| 24 AWG | 0.20 ㎟ | 0.2 ㎟ | - |
† NEC 310.16 reference, copper conductor at 75°C. *Sizes 14/12/10 AWG are limited to 15A/20A/30A breakers by code. Always verify with the current NEC and local regulations.
FAQ
Is a higher AWG number thicker?
No — AWG runs backwards. Smaller numbers are thicker, and aught sizes (1/0, 2/0, 3/0, 4/0) are thicker still. Example: 24 AWG ≈ 0.2 mm², 10 AWG ≈ 5.26 mm², 4/0 ≈ 107 mm².
What is 14 AWG in mm²?
About 2.08 mm² — closest to the common metric size 2.5 mm². When substituting, use an equal or larger cross-section.
Can I wire directly from this ampacity chart?
The values are NEC 75°C copper references. Real ampacity depends on insulation type, installation method, ambient temperature and bundling — follow the current NEC and local code, and leave fixed wiring to qualified electricians.
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