10 AWG to mm² – Wire Size & Diameter
10 AWG = 5.261 mm²
10 AWG solid wire has a cross-section of 5.261 mm² and a diameter of 2.588 mm (0.1019 in).
Step by step
- Diameter: d = 0.127 × 92^((36 − 10)/39) = 2.5882 mm.
- Area: π/4 × d² = 5.2612 mm².
10 AWG copper is used for 30 A circuits such as water heaters and dryers.
Details
- Area
- 5.261 mm²
- Diameter
- 2.588 mm (0.1019 in)
- Area in kcmil
- 10.38
- Nearest metric size
- 6 mm²
- Copper resistance
- 3.277 Ω/km
How it works
The American Wire Gauge system is logarithmic: smaller numbers mean thicker wire, every 6 gauges halve the diameter and every 3 gauges roughly halve the area. Metric wire is specified directly by cross-sectional area in mm², so the sizes never line up exactly. When substituting, choose a conductor with at least the same area, and always follow local electrical codes.
Nearby values
Related conversions
Frequently asked questions
What is 10 AWG in mm²?
5.261 mm².
What is the diameter of 10 AWG wire?
2.588 mm (solid conductor).
What metric wire replaces 10 AWG?
Use the next metric size up with at least 5.26 mm².
Is stranded wire the same size?
Stranded wire of the same gauge has the same copper area but a slightly larger overall diameter.