--- title: "Carbon offsets for pilots, per flight hour | TrimCarbon" description: "An hour in a Cessna 172 emits about 88 kg of CO₂. Offset every hour in your logbook for about $3, with independently rated carbon credits." url: https://trimcarbon.com language: en --- # Offset every hour in your logbook 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. [Start offsetting](https://trimcarbon.com/sign-up) Cancel anytime - Rated projects, Per-kg pricing, Order certificates - From $0.036 per kg of CO₂ - Built by a pilot, for pilots ## Credits rated and registered independently 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. Calculator ## What an hour in your aircraft emits Typical cruise fuel burn for 67 aircraft, from trainers to jets. Pick yours and the hours you fly in a year. Your price in 2 clicks. No sign-up. ### CO₂ and offset cost per hour | Aircraft | CO₂ an hour | To offset an hour | | ---------------------------------------------------------------------------------------- | ----------- | ----------------- | | [Cessna 150/152](https://trimcarbon.com/emissions-calculator/cessna-150-152) | 51 kg | $1.84 | | [Diamond DA40](https://trimcarbon.com/emissions-calculator/diamond-da40) | 83 kg | $2.99 | | [Piper PA-28 Cherokee](https://trimcarbon.com/emissions-calculator/piper-pa-28-cherokee) | 87 kg | $3.13 | | [Cessna 172 Skyhawk](https://trimcarbon.com/emissions-calculator/cessna-172-skyhawk) | 88 kg | $3.17 | | [Robinson R44 Raven II](https://trimcarbon.com/emissions-calculator/robinson-r44) | 125 kg | $4.50 | | [Cirrus SR22](https://trimcarbon.com/emissions-calculator/cirrus-sr22) | 136 kg | $4.90 | On the monthly plan. The yearly plan costs less. [See all 67 aircraft](https://trimcarbon.com/emissions-calculator) Logbook import ## Have a logbook? Use your real flights 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. - Each flight counted with its own aircraft type - Simulator sessions left out - Your file stays on your device: nothing is uploaded [Import your logbook](https://trimcarbon.com/import-logbook) Features ## Built around how pilots fly 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. ## Built to serve the flying community [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](https://trimcarbon.com/for/individuals) [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](https://trimcarbon.com/for/flight-schools) [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 more](https://trimcarbon.com/for/clubs) Registry ## Proof for every kg you offset Every order gets its own certificate: the CO₂ retired, the projects behind it, and their serial numbers on public registries. Here is a specimen. [See the registry](https://trimcarbon.com/registry) [How projects are screened](https://trimcarbon.com/process) ## Still deciding? Start here Plain answers on whether offsets work, what an hour of flying costs to offset, and how to check a credit yourself. [All guides](https://trimcarbon.com/expertise) [Are carbon offsets a scam? The evidence, from a pilot who sells them · 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.](https://trimcarbon.com/expertise/are-carbon-offsets-a-scam) [How much does it cost to offset a flight hour as a GA pilot? · 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.](https://trimcarbon.com/expertise/cost-to-offset-a-flight-hour) [Trace your carbon offset to the registry: a five-minute check · 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.](https://trimcarbon.com/expertise/how-to-verify-carbon-offsets) ## Common questions, expert answers How TrimCarbon works, how the credits are chosen, and what you pay. [Still have questions? Reach out](https://trimcarbon.com/contact) ### What is TrimCarbon? TrimCarbon offsets the CO₂ from general aviation flying. Pick your aircraft and the hours you fly, and we buy and retire independently rated carbon credits for the same amount of CO₂. ### How is my CO₂ figure calculated? We multiply your aircraft's typical cruise fuel burn by the CO₂ of its fuel: 8.31 kg per US gallon of avgas, or 9.75 kg for Jet A. A Cessna 172 burning about 10.6 gallons an hour emits about 88 kg. That covers combustion only. If your logs give you an average burn, multiply it by the same factor for a closer number. ### Can I use my logbook instead of estimating my hours? Yes. Import a ForeFlight, Garmin Pilot or LogTen export. Your browser reads the file, so it never leaves your device. You get the CO₂ of every logged flight and a yearly plan sized on your last 12 months. ### How do I know the carbon credits are legitimate? Our supplier says fewer than 3% of projects on the market are eligible for its portfolios. Each project must be highly rated by at least one of Sylvera, BeZero, Calyx Global or Renoster, and its credits are issued and retired on public registries such as Verra and Gold Standard. ### What's the difference between the subscription and a one-time purchase? You pick your aircraft and yearly hours and pay a rate per kg of CO₂: $0.036 on the monthly plan, or from $0.035 on the yearly plan, which gets lower as the amount grows. The plan renews until you cancel, which you can do anytime. A one-time purchase is $40 for one tonne, with no subscription. ### What if I fly more than I planned? Add a one-time purchase whenever you need it, or contact us about a custom plan for a school, club or fleet. ### What types of projects are included? A mix chosen by our supplier across project types and regions: mostly projects that reduce or avoid emissions, plus a share that remove CO₂ from the air. Avoided emissions aren't taken out of the atmosphere, and nature-based removals can be reversed, so an offset doesn't cancel out a flight. ### Is this greenwashing? Offsetting isn't a silver bullet, and cutting fuel burn comes first. For the emissions you can't avoid, we use only independently rated credits, each traceable on a public registry, so you can check them rather than take them on trust. ### Do I get proof of my offsets? Yes. Each order gets its own certificate page and PDF, with the kg of CO₂ retired, the projects behind it and their serial numbers on public registries. ### How secure is my payment? Payments are handled by Stripe, so we never see or store your card details. [Flying has been my passion since childhood. I built TrimCarbon so pilots can offset the CO₂ of their flying at a clear price per kg, and check every credit on its public registry. · Jp Valery · Founder of TrimCarbon, PPL holder](https://trimcarbon.com/story) ## Offset the CO₂ from every hour you fly Retire rated carbon credits for the CO₂ your flights emit. Pick your aircraft and hours, and get a certificate for every order. [Start offsetting](https://trimcarbon.com/sign-up)