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Read the mark
Capture the exact code stamped on the container. Markwise checks the sequence and separates each part.
UN packaging, decoded
Enter the code stamped on a drum, pail, or box. Get the container, rating, weight, year, and meaning—without digging through 49 CFR.
Try 4G/Y15/S/26/USA/M5678
Enter or scan a UN mark
$ markwise decode 4G/Y15/S/26/USA/M5678
4G · Container
Fiberboard box
Y15 · Packing group
II / III eligible
S · Contents
Solids or inner packagings
26 · Year
Manufactured 2026
Mark status
Plain-English breakdown ready
Free UN mark decoder
Built for common UN performance marks on drums, pails, jerricans, and boxes. Every result explains what was read—and what still needs a packaging record.
Educational use only
Markwise is not regulatory or legal advice. A decoded mark is not a compliance determination, expiry ruling, or reuse authorization. The shipper remains responsible for compliance under 49 CFR.
Waiting for a mark
Paste the code exactly as stamped. We’ll separate the common components before explaining them.
The fast path
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Fast
Readable results in moments.
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Clear
Every segment explained in context.
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Useful
Answers your team can act on.
From stamp to answer
Markwise separates dense certification syntax into facts your warehouse, shipping, or hazmat team can use right away.
4G / Y15 / S / 26 / USA / M5678
Paste the printed code or capture it from the package. No specialized vocabulary required.
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Capture the exact code stamped on the container. Markwise checks the sequence and separates each part.
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See container type, packing group rating, maximum gross weight, permitted contents, year, country, and certifier.
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Use the result as a clear starting point for shipping decisions, packaging records, or a deeper review.
Choose your depth
Markwise Pro
$29/ month
For teams that need repeatable packaging records, closure instructions, and current documentation.
Saved packaging profiles
Closure instruction library
Packaging specification validation
Regulatory update alerts
Expert consulting · $500–$2,500
Packaging qualification, drop-test failure diagnosis, and hazmat program documentation informed by ISO 9001:2015 and AS9120B-certified aerospace distribution experience.
Markwise provides educational information and does not constitute regulatory or legal advice. The shipper remains responsible for compliance under 49 CFR.
Stop guessing at the stamp
Paste the code, understand the packaging, and get back to shipping.