🔊 Engineering
12 calculators available
Applied Acoustics
2 tools
NRR Calculator — Noise Reduction Rating (OSHA)
Calculate effective hearing protection attenuation. Supports NRR to dBA conversion, OSHA derating, and dual protection logic.
Noise Dose Calculator (OSHA & NIOSH)
Calculate daily noise exposure dose (%), TWA (Time Weighted Average), and permissible exposure limits. Supports OSHA (5dB exchange) and NIOSH (3dB) standards.
NDT
6 tools
TOFD PCS Calculator
Calculate Probe Center Spacing (PCS) for Time of Flight Diffraction (TOFD) ultrasonic testing. Essential for NDT weld inspection and beam intersection planning.
Ultrasonic Flaw Depth Calculator (Angle Beam UT)
Calculate exact flaw depth and surface distance for angle beam ultrasonic testing. Automatically computes half-skips, full-skips, and multi-leg V-paths.
Ultrasonic Angle Beam Calculator (Snell’s Law Refraction)
Calculate ultrasonic beam refraction angle using Snell’s Law for UT and NDT. This calculator uses sound velocity (V) instead of optical refractive index (n).
Ultrasonic Beam Spread Calculator (-6dB Divergence)
Calculate the half-angle beam divergence (-6dB) for ultrasonic transducers. Optimize probe selection by determining beam width and far-field coverage.
Ultrasonic Near Field Calculator (UT N-Point)
Calculate the Near Field length (N) for ultrasonic transducers. Avoid inspection errors by determining the natural focus point of your probe.
UT Skip Distance Calculator
Calculate half skip and full skip distances for angle beam ultrasonic testing (NDT). Essential for weld inspection planning and flaw plotting.
RF & Telecommunications
4 tools
Antenna Gain Calculator
Convert antenna gain between dBi and dBd. Calculate Effective Isotropic Radiated Power (EIRP) by combining transmitter power, cable loss, and antenna gain.
Antenna Length Calculator
Estimate practical starting lengths for Dipole, 1/4 Wave, J-Pole, and Yagi antennas. Includes shortening factor compensation for real-world tuning.
1/4 Wave Antenna Calculator
Estimate precise starting lengths for quarter-wave ground plane antennas (monopoles). Calculate vertical radiators and ground radials with shortening factors.
Pi Attenuator Calculator
Calculate exact resistor values for RF Pi pad and Pi network attenuators. Find series and shunt resistors for precise dB attenuation and matching.