The reference that fits in your pocket.
The calculators and tables a calibration tech reaches for, rebuilt to run anywhere. Percent error by span, signal scaling, square-root extraction, and the RTD and thermocouple tables, all in your browser. Nothing to install, nothing leaves your phone.
Calibration Error
As-Found / As-Left worksheet. Enter your readings, get error as percent of span, with pass / fail against your tolerance.
Open toolSignal Scaling
Map any input span to any output. mA to engineering units and back, with percent of span shown live. The ideal-output side of calibration.
Open toolSquare-Root Extraction
DP flow, both directions. mA to flow and flow to mA, with the differential-pressure and scaled-variable ranges side by side.
Open toolRTD Tables
Pt100 and Pt1000 resistance against temperature, IEC 60751. Generate a table at any interval, or convert a single reading either way.
Open toolThermocouple Tables
Types J, K, T, E, N, R, S, B. Millivolts against temperature, ITS-90, reference junction at 0 °C, with cold-junction compensation built in.
Open toolField Formulas
The working set. mA and percent, scaling, square root, turndown, RTD and thermocouple basics, each with a plain example.
Open referenceBuilt from public standards (IEC 60751, ITS-90, ISA calibration practice). Always confirm against your facility's procedure and reference instrument. This is a working aid, not a certificate of accuracy.