Free online NDT calculators built by an ASNT Level III: ultrasonic near field and beam spread, radiographic exposure and geometric unsharpness, magnetic particle amperage, eddy current depth of penetration and f/fg, plus dB and unit conversions.
Ultrasonic Testing (UT) Calculators — Near field, beam spread at any dB edge, maximum PRF, encoder PPR correction, and scan step size for phased array. → UT Calculators
Radiographic Testing (RT) Calculators — Inverse square law, source decay, exposure time, geometric unsharpness (Ug), and half-value layer shielding. → RT Calculators
Magnetic Particle Testing (MT) Calculators — Coil shot amperage from L/D ratio, central conductor and head shot current, and prod spacing amperage. → MT Calculators
Eddy Current Testing (ET) Calculators — Standard depth of penetration, phase lag, limit frequency and f/fg, conductivity conversion (%IACS, MS/m, resistivity), and fill factor. → ET Calculators
General NDT Calculators — Decibel gain, angle-beam trigonometry, Snell's law, and unit conversions used across all methods. → General Calculators
All calculators are free to use. If your team needs a written procedure, training, or Level III support on any of these methods, see NDT Consulting Services.