DOT Hazmat Shipping Calculator

Container type is captured here for reference, but DOT packaging performance requirements -- and therefore this calculator's placarding, labeling, and paperwork outputs -- are driven by hazard class and packing group, not by which physical container style (drum, box, cylinder, and so on) you select. A given packing group's performance requirements apply whether the material ships in a drum or a tote.

In this calculator's simplified model, hazard classes 1 (explosives), 2 (gases), and 7 (radioactive) are treated as placard-required at any quantity. The real DOT rule (49 CFR 172.504 Table 1) is narrower and division-specific rather than class-wide -- it's limited to Divisions 1.1-1.3, Division 2.3 poison gas, Division 4.3, Division 5.2 Type B, Packing Group I inhalation-hazard Division 6.1, and Class 7 only when a RADIOACTIVE YELLOW-III label applies. Most Class 2 shipments (the common 2.1 flammable-gas and 2.2 non-flammable-gas divisions) and lower-severity explosives divisions are actually subject to the same 1,001 lb threshold as other classes, so this calculator can over-flag placarding for those materials -- confirm the actual division against the DOT Hazardous Materials Table before relying on it.

In this calculator's simplified model, packing group sets how much material can move under a small-quantity or limited-quantity provision -- Packing Group I (great danger) allows the least, Packing Group III (minor danger) allows the most. The real DOT figures work differently: 49 CFR 173.4 small-quantity limits are set per inner receptacle in grams/milliliters (1 g/mL for Packing Group I, but the same 30 g/mL for both Packing Group II and Packing Group III, under a 29 kg / 64 lb gross-package cap) rather than a flat pound threshold that scales by group, and limited-quantity limits come from the Hazardous Materials Table's per-material column, not packing group alone. Treat this calculator's thresholds as an illustrative simplification, not a citation to 173.4.

Yes -- the estimated surcharge includes a weight-based component that increases in steps as quantity grows, on top of a flat base tied to packing group and an added amount for certain higher-risk hazard classes. Shipping more material at the same hazard class and packing group never produces a lower estimated surcharge than shipping less.