Your footprint
No sign-up, no jargon. Adjust the details below and watch your yearly footprint appear — with the single change that would cut it most.
What your number means
Rough awareness estimates using typical factors (a maturing tree absorbs ≈ 21 kg CO₂/year; car ≈ 0.17 kg/km; short flight ≈ 0.5 t). Your real footprint depends on many specifics — this is a starting point, not an audit.
Your biggest lever
The largest slice of your footprint is where a change pays off most. Adjust the sliders and watch it move.