Sources, versions and scope
Units: Tabel's practical 26-unit subset uses NIST SP 811 and Handbook 44, 2026 Appendix C. Exact definitions, powers and subdivisions are calculated by Tabel, reviewed 4 October 2026. Count conventions are explicit Tabel definitions. No survey-foot, density or implicit package conversions.
Currencies: Unicode CLDR 48.2.0, current tender entries per territory as of 4 October 2026. Names are localized by your browser's Intl implementation, whose version can differ. Language availability is shown in the site navigation. CLDR is an openly licensed locale dataset, not Tabel's copy of the ISO registry; historic and non-tender currencies are excluded.
Data reuse: NIST terms and Unicode License v3. See data acknowledgments. No endorsement is implied.
Portable, versioned data
Manifest · Unit definitions (JSON) · Currency territories (JSON). These public reference files contain no supplier uploads.
The library is intentionally scoped to commercial pack comparison. It does not contain supplier catalogues, live prices, tariff schedules, nutrition records or tax rules. Search results that are absent remain absent.