Trees for the Future Business Carbon Calculator 

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Offset your Company's Carbon Footprint 
and 
Become a Global Cooling Business! 

Trees offset the Carbon you generate through photosynthesis. A tree in a Forest Garden sequesters a rate of 34.6 pounds of Carbon per tree. With about 4,000 trees in a Forest Garden, each Forest Garden sequesters 62.8 metric tons of Carbon. 

This calculator estimates the amount of trees you need to plant in order to offset your company's Carbon emissions from your company's electricity, gas, employee commuting, and supply chain emissions. This audit is an estimate of your company's Carbon emissions and may not be exact. Learn more about our research at trees.org/post/carbon.

Fill in as many sections below as possible to offset your company's Carbon footprint. You are able to save and come back to your work by clicking at the top or bottom of this screen. A tax receipt will be sent to the email provided below after completing your donation.
Contact Information




Annual Electricity Use

Where do I find this?  On your monthly electric bill your monthly energy use is listed. Add up the total number of KWh from your last 12 monthly invoices.

On average, electricity sources emit about 1.22 pounds of Carbon per kWh.

Total 
kWh/Yr
equals
total pounds of Carbon generated per year
divided by 34.6 pounds of Carbon absorbed per tree equals
trees you must plant to offset the Carbon produced by your company's electricity use.
Annual Natural and Propane Gas Use 

Where do I find this? On your monthly gas bill your monthly gas use is listed. Add up the total number of gallons of propane gas and/or therms of natural gas usage from your last 12 monthly invoices.

On average, 1 therm of natural gas emit about 12.08 pounds of Carbon

On average, 1 gallon of propane emit about 12.65 pounds of Carbon

Natural Gas Use
therms/Yr
Propane Gas Use
gallons/Yr
equals
total pounds of Carbon generated per year
divided by 34.6 pounds of Carbon absorbed per tree equals
trees you must plant to offset the Carbon produced by your company's gas use.
Employee Commuting

Where do I find this? We recommend conducting an employee survey to calculate the type of travel and total number of miles and/or gallons of gasoline are used for employee commuting annually.

On average, unleaded gasoline emits about 19.6 pounds of Carbon per gallon.

On average, a commuter bus emits about 0.12 pounds of Carbon per mile.

On average, a subway train emits about 0.37 pounds of Carbon per mile.

On average, a long distance train emits about 0.3 pounds of Carbon per mile.

On average, a plane emits about 0.55 pounds of Carbon per mile.

Estimated number of gallons of gasoline used by commuting cars per year:
  
Estimated numbers of miles traveled by bus per year:
Estimated numbers of miles traveled by subway per year:
Estimated number of miles traveled by long distance train per year:
Estimated numbers of miles traveled by plane per year:
equals
total pounds of Carbon generated per year
divided by 34.6 pounds of Carbon absorbed per tree equals
trees you must plant to offset the Carbon produced by your company's employee commuting.
Annual Supply Chain Emissions

Where do I find this? Calculate the total number of shipments, average weight of shipments (lbs) and average distance (mi) use for each item below. 


On average, a cargo plane emits about 2.90 pounds of Carbon per Ton-Mile.

Total number of shipments per year: 
Average weight of shipment (lbs):
Average shipping distance (mi):

On average, a cargo truck emits about 0.32 pounds of Carbon per Ton-Mile.

Total number of shipments per year: 
Average weight of shipment (lbs):
Average shipping distance (mi):

On average, a cargo train emits about 0.05 pounds of Carbon per Ton-Mile.

Total number of shipments per year: 
Average weight of each shipment (lbs):
Average shipping distance (mi):

On average, a cargo ship emits about 0.13 pounds of Carbon per Ton-Mile.

Total number of shipments per year: 
Average weight of each shipment (lbs):
Average shipping distance (mi):
equals
total pounds of supply chain Carbon generated per year
divided by 34.6 pounds of Carbon absorbed per tree equals
trees you must plant to offset the Carbon produced by your company's annual supply chain emissions.
Your Totals
Total number of trees needed to be planted to offset your Carbon emissions from your company's electricity use, fossil fuel consumption, annual transportation, and employee commuting for the year =
multiplied by $0.10 per planted tree = $
After clicking "Offset Carbon Footprint" below you will be taken to a page to plant trees that will offset your company's Carbon footprint estimated above. A tax receipt will be sent to the email provided above after completing your donation. 

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