AI‑Verified Audit – Calibration Uncertainty Calculator

These calculators have been carefully reviewed and AI‑assisted to confirm accuracy against relevant standards.

While care has been taken to ensure technical correctness, no responsibility is accepted for how results are used. Users must verify all outputs for suitability within their own processes and quality systems.

Objective

This audit reviews the Calibration Uncertainty Calculator hosted at calibration.info. Using AI‑assisted validation, the calculator’s formulas and outputs were checked against the Guide to the Expression of Uncertainty in Measurement (GUM) to confirm it provides reliable guidance for combining uncertainty components in calibration work.

Relevant Standards

ISO/IEC Guide 98‑3 (GUM): Root‑sum‑square (RSS) method for combining Type A (statistical) and Type B (systematic) uncertainties.
Expanded uncertainty: Uses k = 2 by default, unless otherwise specified by the user.
Local operation: Calculator runs entirely in‑browser; no user data is transmitted or stored externally.

Assessment Summary

The tool correctly implements GUM principles, producing standard and expanded uncertainties from user‑entered Type A and Type B components. Independent checks against reference examples confirmed numerical accuracy across all tested cases.

Verification Details

Multiple test cases were used, comparing results with worked examples from the GUM. In every case, the calculator’s outputs matched reference values within expected rounding tolerances. The calculator is designed for educational and practical support in uncertainty budgeting.

Limitations & User Responsibility

This tool is intended as guidance and does not replace formal uncertainty budgets or accredited calibration processes.
Users remain responsible for ensuring calculations meet regulatory or accreditation requirements.
Results should be validated within the user’s quality system before formal use.

Conclusion: The Uncertainty Calculator has been independently validated with AI‑assisted review and conforms to accepted GUM methods. It is suitable as a support tool for laboratories and technicians, with final responsibility resting with the user.