The Cirrus SR22 is one of the best-selling piston aircraft of the last two decades, with a 310 to 315 hp engine and a parachute for the whole airframe. At a typical fuel flow of 12.0 US gallons (46 L) of avgas per hour, a Cirrus SR22 puts about 100 kg of CO₂ into the air for every hour flown.
| Hours flown | CO₂ | Cost to offset |
|---|---|---|
| 25 h | 2.50 t | $83.13 |
| 50 h | 5.00 t | $157.50 |
| 100 h | 10.00 t | $297.50 |
| 200 h | 20.00 t | $595 |
Costs are for the yearly plan, from $0.035 per kg with lower rates as the amount grows. The monthly plan is $0.036 per kg, and one tonne once is $40.
On the monthly plan, offsetting an hour in a Cirrus SR22 costs about $3.60. See plans
Enter the hours you fly in a typical month or year.
CO₂ per flight hour for common piston aircraft, at typical cruise fuel flow.
Burning one US gallon of avgas releases about 8.31 kg of CO₂, so CO₂ per hour is fuel flow multiplied by 8.31. The figure covers combustion only, not producing or transporting the fuel.
Your real fuel flow depends on power setting, mixture, altitude and how much of the hour you spend climbing. If your logs give you an average burn, multiply it by 8.31 for a closer number.
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