iOS — Free + Pro

Every weld setting.
Every reference.
Offline.

8 calculators, 8 reference guides — from settings to symbols to defects. Built for welders on the shop floor, not in front of a laptop.

Download on the App Store See all features
Welding Reference Pro app screenshot
8 Calculators
8 Reference Guides
27 Electrodes
100% Offline

Weld Settings Calculator

Put in the metal.
Get the settings.

Select your process, material, and thickness. Get instant amps, volts, wire speed, gas, electrode, and polarity — no chart hunting.

  • MIG, TIG, Stick, and Flux-Core processes
  • Mild Steel, Stainless, Aluminum, and Cast Iron
  • Any thickness — outputs a calibrated range, not a guess
  • Gas type, polarity, and electrode all included

Weld Settings Calculator

MIG TIG Stick Flux-Core
Material
Mild Steel
Thickness
3/16"
Position
Flat (1G/1F)

Recommended Settings

Amps
130–160 A
Volts
18–20 V
Wire Speed
250–300 IPM
Gas
75/25 Ar/CO₂

Reference Guides

27 electrodes.
Every detail you need.

Searchable electrode and filler guide with coating type, polarity, welding positions, and applications — all offline.

  • Stick, MIG, TIG, Flux-Core, and Nickel electrodes
  • 18 AWS A2.4 welding symbols across 5 categories
  • 13 joint types with bevel angles and root gap specs
  • Weld Defect ID with severity ratings and fixes

Electrode / Filler Guide

Search electrodes… E7018
E7018
Low Hydrogen DCEP / AC All positions
Low-hydrogen iron powder electrode. Excellent for high-strength, crack-sensitive welds. Requires dry storage.
E6010 Cellulosic · DCEP
ER70S-6 MIG · 75/25 Ar/CO₂
ER308L TIG · Stainless

Defect Identification

Identify the defect.
Fix it right.

10 common weld defects with severity rating, root causes, and corrective actions — so you fix it once and move on.

  • Porosity, undercut, incomplete fusion, cracking, and more
  • Severity badges: High / Medium / Low
  • Causes listed, not just symptoms
  • Corrective action for each cause

Weld Defect Identification

Porosity High
  • Contaminated base metal or filler
  • Insufficient shielding gas flow
  • Gas leaks or drafts in work area
Undercut Medium
  • Travel speed too fast
  • Voltage too high
  • Incorrect electrode angle
Incomplete Fusion High
  • Heat input too low
  • Improper joint preparation
  • Travel speed too fast

More Tools

Everything else you need

🌡️

Heat Input Calculator

Amps × volts × 60 ÷ travel speed with 5 process efficiency factors. Instant kJ/in output.

🔥

Preheat Calculator

Carbon Equivalent formula across 7 elements. Returns preheat temp, crack sensitivity, and PWHT recommendation.

📐

Symbol Decoder

18 AWS A2.4 welding symbols across 5 categories. Tap any symbol for a full breakdown of what it means on a print.

⚖️

Unit Converter

7 categories: length, temperature, pressure, flow rate, weight, heat input, and area. Imperial ↔ metric in one tap.

💨

Gas Flow Calculator

Select process, material, joint, and position — get the correct gas type and flow rate in CFH and L/min.

💰

Weld Cost Estimator

Labor, filler metal, gas, and overhead per process. Know your per-foot cost before the job starts.

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The only welding app
you'll keep on your phone

From your first bead to your thousandth job — Welding Reference Pro has the settings, specs, and references you need, even without cell service.

Get it on the App Store
Free to download 100% offline No account required iOS only