Environment · Utility calculator
Flight Carbon Cost in Plain Numbers
Estimate passenger flight CO2e from distance, return trip, passengers, radiative forcing, and cabin class.
Instant result
Plain-English why
Copyable takeaway
What this means
Car-km and tree-year equivalents are estimates, not offsets.
Formula used
CO2e = distance x haul factor x passengers x cabin multiplier, optionally x 1.9 for radiative forcing.
Worked example
London to Rome return at 1,430km one-way, economy, RF on is about 1.39 tonnes CO2e.
Common questions
Can I use this internationally?
Yes. Currency selectors are display-only unless a tool explicitly says otherwise; no currency conversion is performed.
How exact is the result?
It follows the published Technofatty formula for this tool, but real life can add fees, rules, timing quirks, and context.
Plain-English summary
This flight is about 1.39 tonnes CO2e for 1 passenger.
This section translates the result into a short, direct takeaway rather than leaving the page at a bare number.
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