{"name":"UnitConvertLab Regional Atlas API","version":"1.0.0","generatedAt":"2026-09-07","description":"Static, CORS-enabled JSON for traditional and regional units: metadata, provenance, exactness classification and precomputed conversion results per slug.","documentation":"https://unitconvertlab.com/api","methodology":"https://unitconvertlab.com/methodology","endpoints":[{"path":"/api/v1/regional/units.json","description":"Every atlas unit with its SI value, variants and source."},{"path":"/api/v1/regional/pairs.json","description":"Every conversion slug with its factor and exactness class."},{"path":"/api/v1/regional/pairs/{slug}.json","description":"Full metadata and a precomputed conversion table for one slug, e.g. tola-to-gram.","example":"https://unitconvertlab.com/api/v1/regional/pairs/tola-to-gram.json"}],"exactness":{"exact":"Legally standardised unit against an exactly defined anchor.","defined":"Customary unit with a settled, widely cited modern value.","reconstructed":"Historical unit; value reconstructed from scholarship.","variable":"Value differs by locality; see variants and valueRange."},"unitCount":169,"pairCount":1780,"license":{"name":"Creative Commons Attribution 4.0 International","id":"CC-BY-4.0","url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Data from UnitConvertLab (https://unitconvertlab.com)"}}