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Reading the spec sheet
Fourteen welding calculators a working welder actually uses — on a phone, in the booth, with no signal. Electrode picker, SMAW amperage, TIG setup, MIG/FCAW V+WFS, heat input, travel speed, gas flow, multi-pass planning, fillet weld strength, filler cost, carbon equivalent + preheat (AWS D1.1 Annex H), bevel/joint-prep volume, stainless + aluminum filler reference, pipe positions. Free on the App Store and Google Play.
Captured from production build · v1.5.3
Electrode — auto rod recommendation
The product solves something specific and gets out of your way.
E6010, E6011, E6013, E7018, plus E7024 for flat / horizontal. Pick surface condition (clean vs rusty/galvanized) and joint position; get the recommended electrode and diameter.
Electrode × diameter → amperage range. Match the rod to the joint so you stop guessing whether 7018 1/8" wants 90 or 130.
Pick base metal and thickness; get starting amps, polarity (AC vs DCEN), tungsten size, cup, filler rod, and cleaning note. Use the Gas Flow tab for CFH.
Wire diameter (.023 / .030 / .035 / .045) × transfer mode (short, globular, spray, FCAW gas-shielded, FCAW self-shielded) → voltage range, wire-feed speed range, and the resulting amperage band. Self-shielded gets the +1.5 V bump.
Volts × amps × 60 / travel speed for heat input in kJ/in or kJ/mm with the AWS D1.1 typical window flagged. Or solve travel speed for a target heat input — WPS-ready.
Enter %C, %Mn, %Cr+Mo+V, %Ni+Cu → CE per AWS D1.1 Annex H. Get a recommended preheat zone (none / 50 / 100 / 150 °C floor) so you stop cracking 4140 the cold way.
V-groove, single-bevel, double-bevel, J-prep. Plate thickness × included angle × root opening × land × length → cubic inches of weld metal and pounds of filler. Quote the seam, not a guess.
Convert gas flow between CFH and L/min for shielding and purge gases. Plan multi-pass joints with root, fill, and cap counts based on plate thickness and pass thickness.
Allowable shear from the AWS D1.1 closed-form check (0.30 × FEXX × throat × length). Right-size the weld so you're not over-burning steel or under-spec'd.
Joint geometry × $/lb × process efficiency presets (SMAW, GMAW, FCAW, GTAW). Quote per-joint filler-metal cost so estimates land closer to actual.
AWS A5.9 stainless (308L, 309L, 316L, 347…) and A5.10 aluminum (4043, 5356, 5183) — common base/filler pairings, polarity, and process notes. The cheat sheet that lives next to the wire spool.
1G–6G groove, 1F–4F fillet, plus 6GR for restricted access. The illustrated reference welders use to talk to inspectors and hiring foremen.
Pick the fit. $3.99/mo to try, $28.99/yr for the best value (saves ~40% over monthly), or $64.99 once — pay once, every future Pro calculator included automatically. Original Pro buyers from earlier versions automatically own Lifetime. No ads, no accounts, no tracking. Walk into a job-shop with no Wi-Fi and the app works the same as the day you bought it.
Everything you’d want to know about WelderCalc on a single sheet. No marketing math.
Same DNA — offline, no ads, no accounts, no tracking. Pro Unlock optional, three tiers.
Want a walkthrough of WelderCalc? We do live demos, off-the-record. No salesperson on the call — the people who built it.
