PRIVACY & LIMITATIONS

Uncertainty budgets stay local. No laboratory system is connected.

Components, distributions, sensitivities, degrees of freedom, and correlations are combined only in the current browser. UncertaintyLab connects to no instrument, LIMS, calibration database, or certificate system and does not submit or approve results.

First-order GUM aid, not proof of model completeness

The tool converts entered distributions to standard uncertainty and applies sensitivities, pairwise covariance, and a Welch–Satterthwaite approximation. It does not identify omitted sources, unit errors, distribution choice, duplicated correlations, positive-semidefinite correlation matrices, nonlinear sensitivities, tail probabilities, or traceability; variance-share percentages also exclude covariance.

A coverage factor is not automatically a coverage probability

Nonlinear, strongly correlated, non-Gaussian, small-sample, or boundary problems may require Monte Carlo, a full correlation matrix, and metrology review. An exported budget is not a certificate or conformity decision.

Advertising and local preferences

This page uses Google AdSense Auto Ads. Google may use cookies or similar technologies under its policies. .miluland.com domain cookies sync language, theme, high contrast, a six-item recent-tools list, and up to 16 favorite tool IDs across MiluLand sites. These values never contain inputs, files, or results; the current site also keeps a local compatibility copy.

Local report studio

The report studio reads only the workbench’s currently visible result summary for local preview, Markdown copy, JSON download, printing, and a SHA-256 fingerprint. It never reads input controls or original files and is not persisted unless you choose to download it.

Optional local checkpoints

Only when you explicitly choose Save does the tool write the visible result summary, time, and optional short label to this site’s browser storage, up to five entries. Imported files and input-control contents are never stored; you can export, restore same-tool checkpoints, or clear them at any time. Imports are limited to 128KB and validate the tool, timestamp, summary, and label of up to 80 characters.