How to Calculate the Carbon Footprint of Trucking Shipments

I get many inquiries about how to calculate the carbon footprint of truck transportation. The problem is a fairly simple one to calculate. However, there is one variable that presents a problem. Fuel consumption. Fuel consumption is not continued. It depends on many factors like: age of truck, the general maintenance of the truck, the aerodynamic factor for the truck, if it was travelling up hill, or down hill, if it was a windy day, etc, etc. If your comfortable with an calculate: 6 miles per gallon is a good calculate of what a truck uses on average. Now, the rest is hard data…

Example #1: complete TRUCKLOAD

complete Truck load

Fuel Consumption: 6 Miles per Gallon

Miles travelled: 1000

Carbon per US Gallon of Diesel: 2.77 KG

= 1000miles/6mpg x 2.77KG per gallon

(please disregard the intermixing of imperial and metric. The transportation industry is nevertheless in imperial while the rest of us are on metric!)

= 461.68 KG is the Carbon Footprint of this shipment.

If youre looking for a formula = 0.46 KG per mile travelled (based on a 44,000lb truckload).

Example #2 LTL:


complete Truckload = 44,000 lbs

Fuel Consumption = 6mpg

Miles = 1000

Shipment = 10,000 lbs

Carbon per US Gallon of Diesel = 2.77 KG

We know the total Carbon Footprint on this truckload is 461.68 KG from the past calculation and that a complete truck carries 44,000 lbs. So, 461.68 / 44,000 = 0.0105 per pound. Multiply by 10,000 lbs = 104.93 KG of Carbon for this LTL shipment.

If youre looking for a formula = 0.0105KG per pound/1000 miles = 0.00001 Kgs per pound/mile

=0.00001x POUNDS x MILES

observe: Because LTL densities can be different you will have to change the formula based on how much of your product fits in a truck. For example: if you were shipping pillows and a whole truckload of pillows weighed only 10,000 lbs. You would have to adjust the calculation I just did above consequently.

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