Contact WeldingCalc

Questions, corrections, or feedback — we read everything.

The fastest way to reach us is email:

What to include

Corrections: the page URL and what you believe is wrong. Email [email protected] and it gets fixed.
Settings questions: your material, thickness, wire/rod size, and machine. We can point you at the right calculator inputs, though we can’t certify settings for your specific machine — run a test bead.
Feedback: a material, process, or feature you wish the calculator handled.
Privacy inquiries: see the privacy policy first, then email us with “Privacy” in the subject.

We’re a small operation, so please allow a few days for a reply.

Sources & Standards

Solid-wire MIG starting points on this site follow the Miller page below: 1 amp per .001 inch of steel, and the wire-speed multipliers.

Miller Electric, MIG Welding: Setting the Correct Parameters

Understanding Contact WeldingCalc

Wrong amps cause burn-through on thin stock and cold lap on thick. Use contact weldingcalc as your starting point, then dial by feel.

This tool uses the standard industry formula: it starts from the primary input, applies the safety margin, and rounds up to the next standard size. All intermediate steps are shown on the result card so you can verify the math yourself.

Common mistakes to avoid: reading only the peak rating instead of continuous rating, forgetting headroom for future expansion, or skipping the duty-cycle assumption.

Frequently asked questions

Is this calculator free?

Yes — free to use, no signup, no email required.

How accurate is the estimate?

Estimates follow industry-standard sizing rules and common safety margins. Always confirm with a licensed professional for final sizing.

Can I use this on mobile?

Yes — the page is fully responsive and works on phones, tablets, and desktop.

Where does the math come from?

Formulas are shown inline on the result panel so you can verify each step yourself.