NMFC freight class calculator

What changed on July 19, 2025

Under NMFTA Docket 2025-1, in force since July 19, 2025, the NMFTA collapsed most commodity-specific classifications into a single 13-subprovision density scale. Before the change, thousands of items carried fixed classes regardless of how they were packed; after it, density alone drives the base class for the vast majority of LTL freight. In practice that means the same product can rate at class 70 on a tight pallet (15+ PCF) and class 175 loosely boxed (4–6 PCF) — packing density is now a pricing lever you control.

Handling, stowability, and liability characteristics still override pure density for flagged commodities (fragile, hazmat, non-stackable, high-value): those items generally keep item-specific NMFC classes. This calculator approximates that effect by bumping the density class one ladder step when any flag is active — a heuristic of this tool, not an NMFC rule, so always confirm flagged freight with your carrier.

FAQ

Is this an actual NMFC quote?

No. The class returned is a density-only estimate. NMFC item-specific exceptions, hazmat tariffs, and carrier-specific accessorials can override it. Use this to set expectations and verify a quote, not to replace one. If the carrier's bill of lading shows a different class than the density math suggests, an item-specific NMFC entry — not the density ladder — is usually the reason, and that entry wins.

What changed on 2025-07-19?

The NMFC moved to a 13-subprovision density-only scale for non-exception commodities, replacing the older 11-tier ladder. Below 30 PCF nothing changed — the real news is two new classes, 50 (≥50 PCF) and 55 (35–50 PCF), that make dense, compact freight cheaper. Switch the ruleset toggle to compare a shipment under both.

Why do handling flags bump only one class?

The one-step bump is this tool's simplifying heuristic, not an official NMFC rule. Under the 2025 NMFC, freight with handling, stowability, or liability concerns generally keeps an item-specific classification instead of the density scale — so treat the bumped class as a signal to expect a higher rated class and confirm the actual class with your carrier or NMFTA ClassIT.

Do you publish NMFC item codes?

No. NMFC item codes are commercially licensed by NMFTA, so this tool encodes only the public density scale facts. The 13 breakpoints used here were cross-checked on June 11, 2026 against NMFTA's public classification FAQs and the July-2025 change guides from DTS and Echo Global Logistics. For the copyrighted item-code descriptions themselves, use NMFTA's ClassIT or ask your carrier.

How do I calculate freight class from density?

Divide total weight in pounds by cubic feet (length × width × height in inches ÷ 1,728). Worked example on the current ladder (verified June 11, 2026): a 48 × 40 × 48 in pallet is 92,160 in³ = 53.33 ft³. At 1,000 lb, density is 1,000 ÷ 53.33 = 18.75 PCF, which lands on the 15 – 22.49 PCF rung — class 70. The same pallet loaded with only 350 lb drops to 6.56 PCF, the 6 – 7.99 rung — class 125, which rates significantly higher. Same product, same footprint: packing density alone moved it four classes.

What is the lowest freight class, and how do I reach class 50?

Class 50 is the lowest and cheapest-rated class. Since July 19, 2025 (NMFTA Docket 2025-1) it applies at 50 PCF or denser, and the new class 55 covers 35 – 49.99 PCF. Example: a half-height 48 × 40 × 24 in pallet is 26.67 ft³; loaded to 1,400 lb it runs 52.5 PCF — class 50 on the current ladder. The legacy ladder topped out at class 60 for anything ≥ 30 PCF, so very dense freight rates cheaper under the 2025 scale. Use the ruleset toggle above to compare both.

What's the difference between a freight class and an NMFC code?

The freight class (50 – 400) is the rating bucket carriers price LTL freight with; the NMFC item code is the commodity entry that determines which class applies. Since the July 19, 2025 simplification, most non-exception commodities take their class straight from the 13-tier density ladder this calculator encodes, while exception items — hazmat, fragile, high-liability goods — keep item-specific classes. Look the code up in NMFTA's ClassIT or via your carrier, then use this tool to sanity-check the density math behind the quoted class.