UTCal
Live on App StoreThe calibration calculator built for UT and PAUT inspectors — not for someone who read about UT in a textbook.
Free features
Skip Distance & Beam Path
Enter angle, thickness, and velocity — get surface distance, leg count, and beam path. The core of every PAUT setup.
Snell's Law
Calculate refracted angle from incident angle and material velocities. Useful for wedge selection and mode verification.
Pipe Reference Chart
Lookup OD, wall thickness, and schedule for standard pipe sizes. Quick reference without digging through a handbook.
Code Library (Basic)
Reference acceptance criteria for common codes. Full code library unlocks with Pro.
Pro features One-time purchase
Beam Path Viewer
Interactive beam path diagram. Slide the probe position and watch the geometry update in real time.
Weld Overlay & Index Offset
Weld geometry visualization with index offset calculator — so you're scanning the right location, not guessing.
Near Field, Dead Zone & More
Near field distance, dead zone, transfer correction, and beam spread — the formulas you need between jobs.
AWS D1.1 Indication Rating
Full structural weld evaluation per AWS D1.1. Enter your dB readings and sound path, get the indication rating and accept/reject verdict.
Pipe Chart Pro
Scan length calculation, favorites, and one-tap scan setup directly from pipe data.
Full Code Library
Acceptance criteria for ASME, API 650/653, B31.1, B31.3, and AWS D1.1 — plus technique references.
Weld Builder
Save complete job setups — material, angle, frequency, wedge — and recall them on the next job.
Fracture Mechanics
Critical flaw size and ASME Section VIII flaw evaluation. For when the engineer needs the numbers now.
Apple Watch
Pipe chart lookup right on your wrist. Check OD and wall thickness without touching your phone mid-scan. Included with Pro.
Works the way the job works
No account. No internet required. Your setups stay on your device. UTCal was built by a practicing PAUT inspector — the workflow matches what actually happens in the field, not a product manager's idea of what UT looks like.
Legal & Support
Contact
Support: support.utcal@carboncode.app