Tree CO₂ Absorption Calculator

Estimate how much CO₂ your trees absorb per year.

CO₂ absorbed/year 210

CO₂ absorbed/year (tonnes) 0.21

Formula: CO₂ = trees × CO₂ absorbed per tree per year

Step-by-step with your numbers:

1. Values used:

2. Number of trees = 10

3. CO₂ per tree/year = 21

5. CO₂ absorbed/year = Number of trees x CO₂ per tree/year = 10 x 21 = 210

6. CO₂ absorbed/year = 0.21tonnes

Did we solve your problem today?

Estimate the yearly carbon uptake of a group of mature trees — a handy way to think about offsetting.

The math behind it

CO₂ = number of trees × absorption per tree per year. A mature tree absorbs roughly 21 kg of CO₂ annually (varies widely by species and age).

10 trees → 10 × 21 = 210 kg CO₂ per year.

How many trees offset a flight?

A 172 kg CO₂ flight ≈ 8 mature trees working for a year (rough estimate).