"The average carbon content is generally 50% of the tree’s total volume.Therefore, to determine the weight of carbon in the tree, multiply the dry weight of the tree by 50%."
Perhaps you can plant trees in your spare time to help offset the carbon footprint you feel guilty about.
A multimillionnaire profiled in Stop Acting Rich planted 10,000 trees a year on his Texas tree farm to get some fresh air and exercise (employees planted the other 3.5 million. Web of goals, brah.