An hour in a Cessna 172 burns about 10.6 gallons of avgas and puts 88 kg of CO₂ in the air. For about $3, we retire carbon credits for those 88 kg, from projects highly rated by agencies such as Sylvera, BeZero or Calyx Global.
The supplier that fills our orders only buys credits from projects highly rated by Sylvera, BeZero, Calyx Global or Renoster, issued on registries such as Verra, Gold Standard, ACR, Climate Action Reserve and Puro.earth.
Typical cruise fuel burn for 67 aircraft, from trainers to jets. Pick yours and the hours you fly in a year.
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Import your logbook| Aircraft | CO₂ an hour | To offset an hour |
|---|---|---|
| Cessna 150/152 | 51 kg | $1.84 |
| Diamond DA40 | 83 kg | $2.99 |
| Piper PA-28 Cherokee | 87 kg | $3.13 |
| Cessna 172 Skyhawk | 88 kg | $3.17 |
| Robinson R44 Raven II | 125 kg | $4.50 |
| Cirrus SR22 | 136 kg | $4.90 |
On the monthly plan. The yearly plan costs less.
See all 67 aircraft
Logbook import
Drop your ForeFlight, Garmin Pilot or LogTen export instead of guessing your hours. You get the CO₂ of every logged flight, by aircraft type and by year, and a yearly plan sized on your last 12 months.
Offset by the flight hour, set it up once, and see exactly where your money goes.
Priced per flight hour
About $3.17 for an hour in a Cessna 172 on the monthly plan, and less on the yearly plan. Pick your aircraft in the calculator to see your own number.
Set it up once
Tell us the hours you fly in a year and pay by the kg of CO₂, monthly or yearly. You can cancel anytime.
Figures for your aircraft
The calculator uses typical cruise fuel burn for 67 aircraft, and the CO₂ factor of the fuel each one burns: avgas or Jet A.
Independently rated credits
Our supplier only buys credits from projects highly rated by Sylvera, BeZero, Calyx Global or Renoster, each tracked on a public registry such as Verra or Gold Standard.
A portfolio built for you
Our supplier spreads each purchase across project types and regions, guided by the Oxford Offsetting Principles, so you don't have to pick projects yourself.
A certificate for every order
Each order gets its own certificate page and PDF, with the projects behind it and their registry serial numbers.
For Individual Pilots
Flying is your passion, but it comes with a footprint. We help you offset it with independently rated carbon credits, priced per kg of CO₂.
Learn more
For Flight Schools
Flight training doesn't need to ignore emissions. We offer transparent, portfolio-based offsetting, sized to your school's fleet and hours.
Learn more
For Flying Clubs
Your club can account for the CO₂ of its flying without flying less. We estimate emissions by aircraft and hours, and you offset them as a club or member by member.
Learn moreEvery order gets its own certificate: the CO₂ retired, the projects behind it, and their serial numbers on public registries. Here is a specimen.
TrimCarbon Registry
Specimen
Certificate №
TC-SPEC-IMEN
This certifies that
Elsie MacGill
funded the retirement of
1,000 kg of CO₂e
Single offset · Placed March 27, 2026
Fulfilled through a diversified portfolio of verified carbon credit projects.
Plain answers on whether offsets work, what an hour of flying costs to offset, and how to check a credit yourself.
All guides
Not as a category. But a 2024 study of 2,346 projects found under 16% of their credits were real emission reductions, and one developer admitted reporting false data. Here are the red flags, and why no offset cancels a flight.
About $1.30 to $4.90 an hour in common piston aircraft, or $3.17 in a Cessna 172. The math by plane and by year, and why carbon credit prices vary.
A certificate is only as good as the registry record behind it. Here is how to trace your offset to that record, why your name usually isn't on it, and how to read a rating.
How TrimCarbon works, how the credits are chosen, and what you pay.
Retire rated carbon credits for the CO₂ your flights emit. Pick your aircraft and hours, and get a certificate for every order.
