Freight Class Calculator

Calculate Freight Class

Enter the dimensions below to receive an estimated freight class using our freight class density calculator. If you require the NMFC number, please email CS@freightzy.com with a description of the item and put the "NMFC number" in the subject line.

PIECE COUNT:

COMMODITY:

LENGTH:

WIDTH:

HEIGHT:

WEIGHT:

Results

YOUR FREIGHT CLASS IS

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VOLUME

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DENSITY

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How Freight Classes Work: NMFC Codes, Density, and Why They Matter

Freight classes are the standardized categories used to price most less-than-truckload shipments. In the NMFC system, freight typically falls into one of 18 classes ranging from Class 50 to Class 500. Lower classes generally apply to freight that is denser and easier to ship, while higher classes are usually assigned to freight that is lighter, bulkier, harder to handle, or more exposed to liability concerns. Your freight class directly affects your LTL rate, which is why even small measurement errors can change the final cost of a shipment.

NMFC codes, or National Motor Freight Classification codes, are the item-specific identifiers that map many commodities to a freight class. Some products are classed mainly by density, while others can be influenced by handling difficulty, stowability, or liability. That means the same shipment weight does not automatically mean the same class. A dense pallet of metal hardware and a bulky pallet of lightweight packaged goods may move at very different classes even if they weigh roughly the same.

At a practical level, density is one of the fastest ways to estimate class:

Freight Density = Weight ÷ Cubic Feet = Pounds per Cubic Foot (PCF)

The higher the density, the lower the class generally trends. The lower the density, the higher the class often becomes. This freight class calculator helps you work from the shipment’s dimensions and weight so you can estimate class more accurately before you quote or book the shipment.

Freight Class Chart: Classes 50 Through 500

Use the chart below as a general density-based reference for common freight classes. It is helpful for estimating class, but actual NMFC classification can still be influenced by commodity-specific rules, handling, stowability, and liability.

Freight Class	Density Range (PCF)	Example Commodity Types	Relative Cost
Class 50	Greater than 50 PCF	Dense metal parts, bolts, bricks, tile	Lowest
Class 55	35–50 PCF	Hardwood flooring, paper rolls, dense boxed goods	Very low
Class 60	30–35 PCF	Car accessories, canned goods, boxed hardware	Very low
Class 65	22.5–30 PCF	Books, heavier packaged food products, tools	Low
Class 70	15–22.5 PCF	Engines, some machinery parts, compact furniture components	Low
Class 77.5	13.5–15 PCF	Tires, bathroom fixtures, denser consumer goods	Low-moderate
Class 85	12–13.5 PCF	Doors, transmissions, some appliance components	Moderate
Class 92.5	10.5–12 PCF	Computers, refrigerators, heavier electronics	Moderate
Class 100	9–10.5 PCF	Wine cases, vacuums, boxed retail goods	Moderate
Class 110	8–9 PCF	Cabinets, framed items, lighter equipment	Moderate
Class 125	7–8 PCF	Small household appliances, vending machines, exhibit materials	Moderate-high
Class 150	6–7 PCF	Assembled furniture, workstations, some machinery	High
Class 175	5–6 PCF	Clothing on pallets, stuffed furniture, lightweight cabinets	High
Class 200	4–5 PCF	Tables, TVs, packaged mattresses	Higher
Class 250	3–4 PCF	Unassembled furniture, bulky packaged consumer goods	Higher
Class 300	2–3 PCF	Chairs, lighter display products, bulky but stable items	Very high
Class 400	1–2 PCF	Lightweight bulky items, empty large containers	Very high
Class 500	Less than 1 PCF	Extremely light, bulky, high-cube freight	Highest

If you ship a commodity that is temperature-sensitive, specialized, or irregularly packaged, do not rely on density alone. In those cases, the best next step is to use the calculator above and then confirm the commodity details before booking. That is especially important for products moving on temperature-controlled LTL or cross-border lanes where misclassification can create both rating and documentation issues.

How to Calculate Freight Density (Step by Step)

If you want to calculate freight density manually, the process is straightforward.

Step 1: Measure the shipment.
Measure the length × width × height of the freight in inches. Include the pallet and all packaging in your measurement, and always measure to the farthest points.

Step 2: Convert cubic inches to cubic feet.
Multiply length × width × height to get total cubic inches. Then divide by 1,728 to convert cubic inches into cubic feet.

Step 3: Divide weight by cubic feet.

Take the total shipment weight in pounds and divide it by the total cubic feet. The result is your density in pounds per cubic foot (PCF).

Here is a worked example:

Pallet size: 48" × 40" × 48"
Total weight: 750 lbs.

First, calculate cubic inches:
48 × 40 × 48 = 92,160 cubic inches

Now convert to cubic feet:
92,160 ÷ 1,728 = 53.33 cubic feet

Now divide weight by cubic feet:
750 ÷ 53.33 = 14.06 PCF

A shipment at about 14.06 PCF generally falls around Class 77.5 on the density scale.

For Canadian users, here is the same logic in metric terms:

Pallet size: 122 cm × 102 cm × 122 cm
Weight: 340 kg

You can either convert the dimensions and weight to inches and pounds first, or use the calculator above and let the tool handle the math.

The important part is consistency: density still needs to end up expressed as pounds per cubic foot for standard NMFC comparison. If you are shipping multiple pallets, calculate each pallet separately if the dimensions or weights differ. If all pallets are identical and contain the same commodity, you can combine total weight and total cubic feet for a single calculation.

Using the Freight Class Calculator for Canadian Shipments

Yes - this freight class calculator is relevant for Canadian shippers. The NMFC classification framework is used across North America, and the same density-based logic applies whether you are moving freight within Canada or shipping cross-border between Canada and the United States. That is why a freight class calculator Canada use case is still the same calculator problem at its core: you need accurate dimensions, accurate weight, and the right commodity context.

Where Canadian users often run into friction is the measurement system. Many domestic Canadian shippers think in centimeters and kilograms, while most freight class and density examples are still shown in inches, pounds, and cubic feet. That makes the calculation feel harder than it really is. The calculator solves that by giving you a faster path to the same answer without forcing you to work through every conversion manually.

Freightzy’s Canadian context matters here too. The brief calls for a stronger Canada signal because the page needs to compete better for freight class calculator canada and related long-tail queries. Freightzy is headquartered in Guelph, Ontario, and supports both domestic Canadian freight and cross-border U.S.–Canada lanes, which makes this tool relevant for shippers on both sides of the border.

Learn more about LTL freight shipping in Canada.

Explore cross-border reefer freight options.

See more about freight shipping in Canada.

Why Accurate Freight Classification Saves You Money

Getting freight class wrong is one of the fastest ways to create invoice surprises in LTL shipping. If a shipment is booked at the wrong class, the carrier can inspect it, remeasure it, reweigh it, and assign the class that actually matches the freight. If that corrected class is higher than the one originally used, the shipment can be repriced after pickup - sometimes with additional reclassification or inspection fees layered on top.

Accurate classification helps in three ways. First, it improves quote accuracy. Second, it reduces the chance of billing disputes after the freight is already moving. Third, it gives you a better basis for comparing rates across carriers, because the shipment is being priced from the same class and density assumptions. If you are not sure whether the class is right, it is better to verify before booking than to fix it after the carrier has already audited the shipment.

Not sure about your freight class? Get a freight shipping quote and we’ll help.

FAQ: About Freight Class Calculator

What is a freight class?

A freight class is the standardized category used to price most LTL shipments. Freight classes generally run from Class 50 to Class 500 and are influenced by factors such as density, handling, liability, and stowability. In practical terms, your freight class directly affects how carriers rate the shipment.

How do I calculate freight density?

Measure the shipment’s length × width × height in inches, divide by 1,728 to convert cubic inches to cubic feet, then divide the shipment weight in pounds by the cubic feet. The final result is your density in pounds per cubic foot (PCF). Use the calculator above if you want the result instantly without doing the math manually.

Does this calculator work for Canadian shipments?

Yes. The same freight classification logic applies to Canadian LTL freight and to Canada–U.S. cross-border freight. The main difference for Canadian shippers is usually measurement format, since many users start with kilograms and centimeters and need to arrive at a pounds-per-cubic-foot density figure.

Learn more about LTL freight shipping in Canada.

Can I calculate freight class for multiple pallets?

Yes. If the pallets are different sizes or weights, calculate each one separately first so the density is accurate. If the pallets are identical and contain the same commodity, you can usually combine the total weight and total cubic feet for a single density estimate. That is often the simplest approach for standardized multi-pallet shipments.

What happens if I use the wrong freight class?

The carrier can inspect the shipment and reclassify it. If the actual class is higher than the one used at booking, the shipment can be repriced and you may also be charged a reclassification or inspection fee. That is why using a freight class calculator before booking is one of the easiest ways to reduce avoidable billing issues.

What is an NMFC code and how do I find mine?

An NMFC code is the commodity-specific identifier used in the National Motor Freight Classification system. It helps map a product to the right classing rules. You can use the calculator’s commodity options to narrow down the right match, and if the product is unusual or difficult to classify, Freightzy’s team can help verify the code before booking.