Free Tools, Hazmat Lookup
& 65+ NFPA Standards in One Place
Operational calculators, live hydrant finder, UN number lookup, and a searchable NFPA standards reference — all free, mobile-first, no login required.
NFPA Standard Explorer
Search and filter 65+ NFPA standards by topic and role — PPE, SCBA, Rehab, Hazmat, Wildland, Active Shooter, Training and more. Original high-level summaries, real-world application notes, and direct links to official NFPA pages. No copied text. No login.
Hazmat UN Number Lookup
Identify any UN number to get hazard class, division, packing group, ERG guide number, and emergency response information. Covers 3,000+ UN numbers across all 9 hazmat classes — organized for fast first-due reference.
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Methodology & Editorial Standards
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Calculators use established formulas from IFSTA, NFPA, and NFA references. We state data sources, formula variants, and limitations clearly. NFPA summaries are original; no standard text is reproduced.
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Learn who authors our content, how updates and corrections are handled, and how to report errors.