Freight Class for Fertilizer
Bagged fertilizer is dense and ships at a low freight class — typically 55 to 70.
What is the freight class for fertilizer?
Granular fertilizer in bags packs tightly and heavily, keeping the class low. Some fertilizers are regulated, which can add handling. Full pallets of cased or bagged product rate at the lower end.
Because freight class is density-driven, there isn’t a single fixed number for fertilizer — class 55–70 is the common range. Run your actual dimensions and weight below to pin it down.
Heavy bags that weigh out
Bagged granular fertilizer is dense, heavy freight — a pallet of 40- or 50-pound bags of prilled or granular product packs tight and hits real weight fast, anchoring class 55–60. Like bagged cement, canned goods and roofing shingles, fertilizer is a weight-out commodity: a pallet reaches the pallet's rating and the trailer's axle limits while barely using vertical space. The class is at the cheap end and the constraint is weight, not cube.
The spread within the range comes from the product form. Dense mineral and granular fertilizers sit at class 55; lighter, fluffier organic amendments, composts and peat-based mixes trap more air and rate toward class 70. Bulk bags (FIBCs / super sacks) concentrate a lot of weight in one handling unit — dense, but heavy enough that lifting equipment and pallet ratings become the limiting factor.
Fertilizer freight class: worked examples
Density is weight ÷ volume (cubic feet = L × W × H in inches ÷ 1,728). Here is how typical fertilizer shipments measure out:
Bagged granular fertilizer — class 55
Bags of granular fertilizer on a 48" × 40" pallet, 36" high, 1,600 lb.
48 × 40 × 36 = 69,120 in³ ÷ 1,728 = 40.0 ft³. Density = 1,600 lb ÷ 40.0 ft³.
40.0 lb/ft³ → class 55 — dense bagged product anchors the cheap end.
Fertilizer stacked to the weight limit — class 55
Bags built only to the pallet's rating, 48" × 40" × 32", 1,500 lb.
48 × 40 × 32 = 61,440 in³ ÷ 1,728 = 35.6 ft³. Density = 1,500 lb ÷ 35.6 ft³.
42.2 lb/ft³ → class 55 — it weighs out low; height would only risk crushing bottom bags.
Bagged organic soil amendment — class 70
Lighter, fluffier organic mix bags, 48" × 40" × 48", 900 lb.
48 × 40 × 48 = 92,160 in³ ÷ 1,728 = 53.3 ft³. Density = 900 lb ÷ 53.3 ft³.
16.9 lb/ft³ → class 70 — airy organic amendments rate the top of the fertilizer range.
Stack low, band tight, mind the weight
Plan fertilizer pallets by weight, not height. Bagged product stacked to a rated pallet often maxes out low, and building taller only risks crushing the bottom bags and toppling a heavy unit — there's no class to gain past the floor. Band or stretch-wrap the stack so bags can't shift, and lay them flat and interlocked to keep the unit square and dense.
A couple of category notes: some specialty fertilizers (certain ammonium nitrate formulations, for example) are regulated and need the correct handling and documentation — check the product's status with your carrier rather than assuming standard freight. And bagged product is moisture-sensitive; a pallet that's absorbed humidity weighs more and can degrade, so keep it dry and protected. Run the real pallet weight through the calculator, but expect fertilizer to weigh out before it cubes out.
What affects fertilizer freight class
- Granular/bagged density
- Regulated vs. standard
- Palletization
- Bag weight
Common fertilizer shipments include bagged lawn fertilizer, granular crop fertilizer, soil amendments, bulk-bag fertilizer.
Class guides covering the 55–70 range:
Calculate the freight class for your fertilizer
Enter dimensions and weight to get the density-based class for your exact shipment.
Density-based estimate. Some commodities carry a fixed NMFC class — check our freight class by commodity pages.
Estimated Freight Class
Density
42.51
lb/ft³
Volume
53.33
ft³
Weight
2,267
lb
35–50 lb/ft³ → Class 55
Free PDF includes a watermark. Pro removes it & adds your brand.
Estimates only — verify freight class/NMFC and chargeable weight with your carrier.
How freight class is calculated (density scale)
Freight class is set by density = weight (lb) ÷ volume (ft³). Higher density → lower class → typically lower cost. Volume here is L × W × H × quantity.
| Density (lb/ft³) | Class |
|---|---|
| 50+ | 50 |
| 35 – 50 | 55 |
| 30 – 35 | 60 |
| 22.5 – 30 | 65 |
| 15 – 22.5 | 70 |
| 13.5 – 15 | 77.5 |
| 12 – 13.5 | 85 |
| 10.5 – 12 | 92.5 |
| 9 – 10.5 | 100 |
| 8 – 9 | 110 |
| 7 – 8 | 125 |
| 6 – 7 | 150 |
| 5 – 6 | 175 |
| 4 – 5 | 200 |
| 3 – 4 | 250 |
| 2 – 3 | 300 |
| 1 – 2 | 400 |
| 0 – 1 | 500 |
Frequently asked questions
What freight class is fertilizer?
Fertilizer typically ships at freight class 55–70. The exact class is set by density — weight divided by volume — so packaging and dimensions can move it within that range.
What affects the freight class of fertilizer?
The main factors are granular/bagged density, regulated vs. standard, palletization, bag weight. Denser, tightly packed loads rate a lower class and cost less to ship.
How do I find the exact freight class for fertilizer?
Measure your shipment and divide weight by volume to get density, then match it to the NMFC scale — the calculator above does this. Confirm the final class and NMFC item number with your carrier before booking.
What freight class is fertilizer?
Dense bagged granular and mineral fertilizer measures ~40 lb/ft³ → class 55; lighter organic amendments and composts rate up to class 70. It's dense, weight-out freight — pallet and trailer weight limits, not cube, are the constraint.
Why does fertilizer weigh out before it cubes out?
Bags of granular fertilizer are heavy and pack tight, so a pallet hits its weight rating and the trailer's axle limits at a low height with space to spare. There's no class benefit to stacking taller — you'd only risk crushing the bottom bags.
Are any fertilizers regulated for shipping?
Some are — certain ammonium nitrate formulations and specialty products carry handling and documentation requirements. Check the specific product's status with your carrier rather than assuming standard freight, and keep bagged product dry, since moisture adds weight and degrades it.