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.
The low-range instrumentation unit, converted every way.
Gauge pressure between US and metric, reference basis kept straight.
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 for water, steam, air and gases — density handled for you.
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.
Scale reading to true flow when the fluid is not the calibration fluid.
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.
Vertical tank with a conical or frustum bottom — volume at any level.
Sphere or horizontal bullet with hemispherical ends — partial fill included.
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.
Spring range, diaphragm thrust and the seat load that shifts it.
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.
Output millivolts, dead load, usable span and 4-20 mA scaling.
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.
ppm ↔ mg/m³ ↔ mg/L ↔ mol/m³ ↔ %vol ↔ %LEL for 24 gases.
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.