Built a free REST API for ADR dangerous goods data — 2,939 entries, no auth, JSON responses

I built FreightUtils — a set of free freight calculation
tools where every tool has a public REST API. No API key
needed, CORS enabled, JSON responses.

The main dataset is ADR 2025 (European dangerous goods
regulations) with 2,939 entries including all variant rows,
rebuilt from official UNECE source data.

Endpoints:

• GET /api/adr?un=1203 — dangerous goods lookup by UN number
• GET /api/adr?q=petrol — search by name
• GET /api/ldm — loading metres calculator
• GET /api/cbm — cubic metres calculator
• GET /api/chargeable-weight — air freight weight comparison
• GET /api/pallet — pallet fitting calculator

Full docs: https://www.freightutils.com/api-docs

Built with Next.js on Vercel. Interested in feedback on the
API design — especially from anyone who works with logistics
or freight software.

https://www.freightutils.com