ISO 6346 Intermodal Freight Container Size/Type Code Verifier
Validates ISO 6346 container size and type designation codes (e.g., 20GP, 40HC, 45RF).
Notice: engineering verification utility. Use test or de-identified data and verify results independently before relying on them.
How it works
Standard: ISO 6346 Freight Containers Coding
Formula: Length code (2=20ft, 4=40ft, L=45ft) + height/type group verification
Checks: 4-character alphanumeric ISO container code
Calculated locally in browser memory; nothing leaves your browser.
Deterministic local-first client-side execution. Provided as-is without warranty.