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Calculator for the Removal of CO₂ from Trees

The carbon dioxide consumption and the oxygen production of trees in a certain time span can be calculated here. Trees and other plants consume carbon dioxide (CO₂) and produce oxygen (O₂). They give us the air to breathe and makes life on earth possible. One tree removes around 30 grams (0.03 kg) of carbon dioxide per day, with very large fluctuations depending on the tree species and location.

Consumption per tree:	kg
Number of trees:
Removed CO2:	kg
Time: d h m
Produced O2:	kg

Please enter three values of consumption per tree, number, reduced CO₂ and time, the fourth value and the oxygen produced will be calculated. At of time, d is for days, h for hours and m for minutes, it is sufficient to fill in one value here.

Example: to remove one ton (1000 kg) of carbon dioxide, 100 trees need 333 days and 8 hours.

The specified value of 30 grams of CO₂ consumption per tree is of course only an average and a gross simplification. Trees store carbon dioxide best in middle age. Conifers store slightly more than deciduous trees, but a mixed forest is preferable because shed needles and leaves together improve the forest floor, giving it additional storage capacity. Forests that are as natural as possible are therefore much better than monocultures for CO₂ absorption, and they are also more resistant to disease and offer a more diverse habitat.

If trees are planted to produce fuel, such as firewood or wood pellets, they do not contribute anything to the climate in terms of the CO₂ balance, because all the carbon stored over the course of their life is converted back into carbon dioxide when burned and released. So although biomass as a fuel is climate-neutral, it consumes a large number of resources; it can be useful in some areas, but is often not ideal.

Last updated on 06/29/2025. Author: Jürgen Kummer

Here you can convert metric units into customary and imperial units.

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