AWG to mm² Calculator
Convert American Wire Gauge (AWG) to metric mm² and vice versa.
Frequently Asked Questions
What is AWG?
American Wire Gauge. Standardized system for wire diameter. Lower AWG = thicker wire. 10 AWG is very thick; 28 AWG is very thin. Each step down halves cross-section approximately.
How do I convert AWG to mm²?
Formula: A (mm²) = π(d/2)² where d = diameter (mm). AWG to diameter: d(mm) = 0.127 × 92^((36-AWG)/39). For quick conversion, use tables or calculator.
What is maximum current for AWG wire?
Depends on insulation type, temperature, ambient. 14 AWG (2.08 mm²): ~15 A. 12 AWG (3.31 mm²): ~20 A. 10 AWG (5.26 mm²): ~30 A. Check tables for exact ampacity.
What is metric (mm²) vs. AWG?
Metric measures cross-sectional area directly. AWG uses diameter-based logarithmic scale. Both are used globally; metric is standard outside North America.
Why does AWG go backwards?
Historical convention. As gauge number increases, wire gets thinner. Counterintuitive but standard.