Built by a pilot who wanted to offset his own flying
TrimCarbon turns your flight hours into kilograms of CO₂ and retires independently rated carbon credits for the same amount. It's built for private pilots, flight schools and flying clubs, so you can account for the CO₂ of your flying without giving up flight time.
For pilots, by pilots
I'm Jp, the founder of TrimCarbon. I’ve loved aviation since I was a kid, and eventually earned my Private Pilot License and night rating.
Flying has always brought me joy. As I learned how much CO₂ my flying puts out, I started looking for a way to account for it without giving up time in the air.
TrimCarbon came out of that search. It's a simple tool to help pilots like me take responsibility for our emissions: measure them, cut what we can, and offset the rest.
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.
CarbonCompass
Plain-English guides for pilots: how to calculate your flight CO₂, how to burn less fuel, and how to read an offset claim.

A carbon offset API for flight schools, clubs and fleets
Offset every lesson, every day's flying or every fuel uplift from your own software. How a carbon offset API works, what it costs, and when a plan is the better fit.
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.
Carbon offsets for pilots: how they work and how to choose credible ones
What a carbon credit is, where offsetting has gone wrong, and five checks to run before you pay to offset your flying.

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.