The CO₂ of your logbook, from your real flights
Drop your logbook export. The page multiplies the flight time of each entry by the CO₂ per hour of its aircraft type, then adds it up by year and for the last 12 months. Your file stays on your device: nothing is uploaded or stored.
Your file stays on this device: it is never uploaded.
No export at hand? Use the hours calculator
How it works
- Export your logbook as a CSV file from your logbook app.
- Drop the file on this page. Your browser reads it, and nothing is sent to us.
- Check how we matched each aircraft type. Untick any flying you don't want to offset.
- See a yearly plan based on your last 12 months, or offset once.
Supported apps
We read the CSV export of these logbook apps. Each page shows how to export your logbook.
- Export guide and importerForeFlightExport your logbook as CSV from ForeFlight on the web, then drop the file to see the CO₂ of every flight. The page lists the export steps and the columns we read.
- Export guide and importerGarmin PilotExport your logbook from the Logbook tab in Garmin Pilot, then drop the log entries file to see the CO₂ of every flight. The page lists the export steps and the columns we read.
- Export guide and importerLogTenRun Export Flights (Tab) in LogTen, then drop the .txt file to see the CO₂ of every flight. The page lists the export steps and the columns we read.
Use another logbook app? Tell us which one
ForeFlight is a trademark of its owner. TrimCarbon is not affiliated with ForeFlight. Garmin Pilot is a trademark of its owner. TrimCarbon is not affiliated with Garmin. LogTen is a trademark of its owner. TrimCarbon is not affiliated with LogTen.
What we count
- Flight time: the total time of each entry, as you logged it.
- Aircraft: the type code of each aircraft, matched to our list of 61 types. Where one code covers two of our types, we take the one that burns more, so the offset never falls short.
- Simulator sessions and entries without flight time don't count.
- An entry over 24 hours is a total carried forward from an older logbook. It counts in your all-flights total, not in your last 12 months.
- The yearly plan uses your last 12 months. With no flights in that period, it uses your average year over the last 3 years.
Your logbook stays on your device
- Your browser reads the file. It is never uploaded, so we can't see it or keep it.
- We read only aircraft, dates and flight time. Names, comments and routes are left out.
- Our analytics never record your registrations, airports or names. With your consent, they record only that an import happened and its size.
- Close or reload the page, and the results are gone.
- If your logbook has an aircraft type code we don't know, the page sends us that code and nothing else, so we can add the type.