Freight Density Calculator
| Length (Inches) | Width (Inches) | Height (Inches) | Weight (lbs) | Cubic Feet | Density |
|---|
| Total Weight (lbs) | Total Volume (ft3) | Total Density (lbs/ft3) | Combined Class |
|---|---|---|---|
| 0.00 | 0.00 | 0.00 | N/A |
| Class | Min Density |
|---|---|
| 50 | 50 |
| 55 | 35 |
| 60 | 30 |
| 65 | 22.5 |
| 70 | 15 |
| 77.5 | 13 |
| 85 | 12 |
| 92.5 | 10.5 |
| 100 | 9 |
| 110 | 8 |
| 125 | 7 |
| 150 | 6 |
| 175 | 5 |
| 200 | 4 |
| 250 | 3 |
| 300 | 2 |
| 400 | 1 |
| 500 | 0 |
Calculating Shipment Density
Classification and Measurements
Freight classification and shipment density are critical factors that influence your shipping costs.
Determining Freight Classification
To ensure accurate rating, your shipment must align with the National Motor Freight Classification (NMFC).
The NMFC assigns classification codes and outlines packaging requirements for various commodities.
It also considers factors such as:
- Density
- Storability
- Ease of handling
- Liability
To help Standard Forwarding Freight provide precise rates and optimal service, include the following details on your Bill of Lading:
- Each commodity
- NMFC item number or classification
- (If required) Declared density or a statement of the released value.
Providing accurate classification information allows us to deliver the best possible service and rates.
How to Calculate Density
- Measure the dimensions of your shipment: height, width, and length.
- Multiply the dimensions to find the total cubic inches:
Example: 30” x 24” x 48” = 34,560 cubic inches - Convert to cubic feet by dividing the cubic inches by 1,728 (the number of cubic inches in one cubic foot):
Example: 34,560 ÷ 1,728 = 20 cubic feet - Calculate the density by dividing the shipment's weight by the cubic feet:
Example: 150 lbs. ÷ 20 cubic feet = 7.5 pounds per cubic foot
How to Measure Cylindrical Freight
For cylindrical items, measure to the extreme points to ensure accurate dimensions.
- Multiply the diameter by itself, then multiply by the height or length:
Example: Diameter (36”) x Diameter (36”) x Height (60”) = 77,760 cubic inches - Convert to cubic feet:
Example: 77,760 ÷ 1,728 = 45 cubic feet - Divide the total weight by the cubic feet to determine density:
Example: 190 lbs. ÷ 45 cubic feet = 4.22 pounds per cubic foot
Final Note
No matter the shape or packaging, always measure to the extreme points of your shipment.
Accurate measurements are essential for determining proper density and freight classification.