MIG amp sizing

MIG welder amp sizing calculator

Enter mild steel thickness in inches. Get starting amps and a 130 / 200 / 250 A MIG class — or NO_MATCH when the ladder cannot cover it.

MIG amp sizing

Result

Enter values to begin.

Starting amps ≈ thickness (in) × 1000 (Miller mild-steel rule). Classes: 130 · 200 · 250 A.

Guides

Miller starting rule, class ladder, and when to stop at NO_MATCH.

Tools

Same tool with room for examples.

Reference

When each MIG class fits — and when none do.