Built to serve the flying community

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.

We multiply typical avgas burn by 8.31 kg of CO₂ per US gallon, so a Cessna 172 burning about 10 gallons an hour emits about 88 kg. That covers combustion only. If your logs give you an average burn, multiply it by 8.31 for a closer number.

Our partner CNaught 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.

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.

Add a one-time purchase whenever you need it, or contact us about a custom plan for a school, club or fleet.

A mix chosen by our partner CNaught 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.

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.

Yes. Each order has a certificate you can open from the orders page of your account.

Payments are handled by Stripe, so we never see or store your card details.