There is no single amps-to-wire-speed multiplier that reliably sets every wire-fed welding process. Wire classification, diameter, stickout, polarity, shielding and equipment all affect the operating point. This tool provides discrete published examples for one named self-shielded consumable so you can see the relationship without inventing a universal formula.
Open the full-width wire-feed reference →
How to use the reference
- Confirm that the wire is Lincoln Electric Innershield NR-211-MP, and select its diameter.
- Choose a published feed-speed point. The tool shows the corresponding voltage range, approximate current and contact-tip-to-work distance from the cited guide.
- Check the current consumable datasheet and your machine instructions before applying a setting. These examples are not a qualified welding procedure.
What the numbers mean
Wire speed describes the linear length fed per unit time. To convert inches per minute to meters per minute, multiply by 0.0254: 100 IPM equals 2.54 m/min. That unit conversion is exact. Converting wire speed into welding current is not an exact universal formula.
The displayed examples are for DC electrode negative self-shielded wire. They must not be applied to solid-wire MIG, another product, or another diameter by analogy. The tool deliberately does not interpolate between the published points.
Record your actual setup
Use the practice log to record the consumable, machine, material and observations. If feed is erratic, use the symptom guide to organize external checks before changing settings.
Source: Lincoln Electric Innershield Welding Guide, typical operating procedures, printed page 48. Article and tool revised September 7, 2026.