Carbon Offset Calculator
Trees and cost to offset your emissions.
Enter your values
ⓘ Live results
Results
- Trees needed
- 428
- Offset cost per year
- $169.20
- Cost per month
- $14.10
- Lifetime (40 yr) offset cost
- $6,768.00
Quick answer
Offsetting a tonne of CO2 costs money or requires roughly 40 tree-years of sequestration.
Trees = tonnes CO2 ÷ tonnes per tree per year
How to use the Carbon Offset Calculator
- 1Enter your annual carbon footprint in tonnes.
- 2Adjust sequestration per tree if you have local data.
- 3Enter the offset price per tonne.
Worked example
Using the values the calculator loads with:
Inputs
- Annual CO29.4 tonnes
- CO2 per tree per year0.022 tonnes
- Offset price per tonne18 $
Results
- Trees needed428
- Offset cost per year$169.20
- Cost per month$14.10
- Lifetime (40 yr) offset cost$6,768.00
Frequently asked questions
Are offsets effective?
Quality varies hugely — verified removal credits cost far more than avoidance credits.
How much CO2 does a tree absorb?
About 22 kg a year once mature, far less when young.
About this calculator
- Built and reviewed by James Whitfield · How we build and test calculators
- Report an error
Results are estimates for general information. For medical, legal, structural or financial decisions, confirm with a qualified professional.