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Engineering calculators that show their working.
Five calculators for the arithmetic calibration, metrology and cold-chain teams do every week — each one states the formula and the standard it follows, and runs entirely in your browser.
Calculators
Measurement uncertainty budget calculator
Combine Type A and Type B components per the GUM: divisors by distribution, sensitivity coefficients, u_c, effective degrees of freedom and U at k = 2.
Open calculatorGuard band and decision rule calculator
Turn a tolerance and an expanded uncertainty into acceptance limits under ILAC-G8 rules, and see the false-accept and false-reject risks.
Open calculatorMean kinetic temperature (MKT) calculator
Paste logger readings and get MKT per ICH Q1A(R2) alongside min, max, mean and out-of-limit runs with durations.
Open calculatorPt100 resistance ↔ temperature calculator (IEC 60751)
Convert between resistance and temperature for Pt100 / Pt1000 sensors, with class AA, A, B and C tolerances at that temperature.
Open calculatorDew point and relative humidity calculator
Convert between temperature, relative humidity and dew point, and see how much a temperature error shifts an RH reading.
Open calculatorPlatform
AI technical assistant
Evidence-cited answers with deterministic uncertainty calculations and a validation status.
Open the assistantTemperature mapping analyzer
Upload CSV/XLSX, run pre-flight and data-quality checks, get statistics, hot/cold spots, excursions and a draft report.
See the workflowCalibration workflow
Request to certificate with the same uncertainty, drift and decision-rule functions, plus technical review and records.
See what is plannedThe calculators implement the published formulas (GUM, ILAC-G8, ICH Q1A, IEC 60751, Magnus) and are covered by automated tests against reference values. They are aids to a competent person, not a substitute for a documented method or a reviewer.