Question 1

What is SWG?

Accepted Answer

Standard Wire Gauge—British wire sizing system. Different from AWG: SWG 10 ≠ AWG 10.

Question 2

How do you convert SWG to mm?

Accepted Answer

SWG 10 = 3.25 mm, SWG 14 = 2.03 mm, SWG 18 = 1.22 mm. Use lookup tables for exact values.

Question 3

What's the relationship between volts, amps, and watts?

Accepted Answer

Power (Watts) = Voltage (Volts) × Current (Amps). To find any value, divide or multiply: Amps = Watts/Volts, Volts = Watts/Amps.

Question 4

Is AWG or metric wire gauge better?

Accepted Answer

AWG (American Wire Gauge) uses arbitrary numbers where smaller = thicker. Metric (mm²) directly indicates cross-sectional area, making calculations easier.

SWG to mm Converter

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