Convert loop current to process value, percentage and back — with any range.
Instant 4-20 mA ↔ 0-100 % conversion.
Will your transmitter power up? Check supply voltage vs loop resistance.
Generate 0-25-50-75-100 % test points in mA and engineering units.
Convert DP signal to flow percentage and mA — the √ law done right.
Decode or build tags like FIC-101, PDT-205, LAHH-310.
Callendar–Van Dusen conversion both ways, Class A/B tolerance included.
Celsius, Fahrenheit, Kelvin and Rankine in one live grid.
Types K, J, T, E, N, R, S, B with cold junction compensation.
2-wire vs 3-wire vs 4-wire — the °C error from your cable.
Vortex shedding vs natural frequency — will the thermowell survive?
bar, psi, kPa, kg/cm², mmH2O, inH2O, mmHg, Torr, atm — all at once.
Pressure from liquid height and density (and back).
psig to psia, barg to bara — with altitude-corrected atmospheric pressure.
m³/h, L/min, GPM, BBL/d, kg/h, Nm³/h, SCFM in one place.
Velocity from flow rate and pipe ID — with recommended velocity limits.
kg/h ↔ m³/h with density — edit any of the three.
Gas-law correction between operating and reference conditions.
Laminar or turbulent? Re from velocity, diameter, density and viscosity.
NPS + schedule → OD, wall, ID, weight and internal area.
Bore and beta ratio from flow and differential pressure.
Friction loss per 100 m with the real friction factor, not a chart.
K-factor, pulse frequency, flow rate and meter factor in one place.
Range, LRV/URV and mA output for open-tank DP level.
Volume at any level, total capacity, litres and m³.
Partial-fill volume from liquid depth — the circular segment done right.
LRV/URV with dry leg or wet leg — zero elevation done right.
Real tank volume including head geometry — vertical or horizontal.
Required Cv from flow, ΔP and specific gravity.
Valve flow coefficients: US Cv, metric Kv and SI Av.
Current to pneumatic signal — mA, psi, kPa and bar in one place.
Compressible sizing with expansion factor and choked-flow check.
Inherent vs installed curves from valve authority — linear, equal % or quick opening.
Required orifice area for gas, steam or liquid relief.
Allowable leakage rate for Class II through VI.
Voltage drop and % drop for copper/aluminium, 1-φ and 3-φ.
Enter any two of voltage, current, resistance, power — get the rest.
kW, kVA, kVAR and line current from voltage and power factor.
Bands to resistance value, tolerance and tempco.
FLC from kW, voltage, power factor and efficiency — 1φ and 3φ.
Base rating with ambient, grouping and insulation derating factors.
Decode Ex db IIC T4 Gb — protection, gas group, temperature class.
P, PI, PID settings from process test data.
Petroleum gravity scales: density, specific gravity, API and Baumé.
Gas density, molar volume and PV=nRT from pressure, temperature and MW.
Tsat, enthalpy and specific volume from pressure — or the reverse.
NPSHa from suction conditions, with margin against pump NPSHr.
Machine condition zone from velocity, plus displacement and acceleration.
Total air demand and backup receiver volume for a given ride-through.
Convert accuracy specs between % of span, % of reading and absolute units.
Is your calibrator good enough? Tolerance ÷ standard uncertainty with verdict.
From up/down calibration readings to % of span numbers.
PFDavg and risk reduction factor from failure rate and proof test interval.
Convert gas concentration units with molecular weight.
Electrode efficiency and offset from two-point buffer calibration.
Pressure dew point to atmospheric dew point, with ISO 8573-1 class.
µS/cm ↔ ppm ↔ MΩ·cm, compensated to 25 °C.
Excess air, lambda and stack loss from flue gas oxygen.