SWG to MM Wire Diameter Calculator

SWG to MM Converter

Precision Gauge Mapping for Heating Elements

Common Heating Wire Chart

Gauge (SWG) Diameter (mm) Cross Section (mm²)
10 SWG3.25 mm8.30 mm²
14 SWG2.03 mm3.24 mm²
18 SWG1.22 mm1.17 mm²
20 SWG0.91 mm0.65 mm²
24 SWG0.56 mm0.24 mm²

Technical Note: SWG is the standard in the UK and India. For American wire standards (AWG), the diameters will differ slightly. Always use a micrometer to verify wire thickness before winding high-resistance coils.