Green Mobility · FAFREES
CO₂ Ride Emission Calculator
See how much CO₂ you cut by riding FAFREES instead of driving.
Quick presets
Evidence and sources
- UK GOV 2024 conversion factors: medium petrol car ~0.192 kg CO₂e/km; SUV/4x4 higher (~0.24–0.27); local bus ~0.081–0.085 kg CO₂e/passenger-km.
- US EPA typical passenger vehicle: ~0.404 lbs/mile (~0.192 kg/km) for an average gasoline sedan.
- IEA on SUV emissions: SUVs emit ~20% more per km than medium cars, aligning with ~0.24 kg/km tailpipe factors.
- IEEE study on e-bike energy use: real-world commuter e-bikes often range 6–12 Wh/km; ~8 Wh/km is a common mid-point.
- IEA Electricity 2025: global grid intensity trending 0.44–0.50 kg CO₂/kWh; 0.55 kg is a conservative default.
Annual saving
0 kg CO₂e
≈ planting 0 trees / year*
Tree equivalent
≈ 0 trees each month.
Car km you skip
Assumes the same trips done on a car or bus.
Fuel not burned
Based on 2.31 kg CO₂ per liter of gasoline.
How we calculate
- Car factors are based on typical tailpipe averages used by EPA/EEA studies (e.g., ~0.192 kg/km for a family sedan, 0.241 kg/km for SUVs, 0.082 kg/km per bus rider).
- E-bike uses ~8 Wh/km (typical city riding) × your annual km, multiplied by the grid factor (default 0.55 kg CO₂/kWh from global averages).
- Yearly totals assume 48 riding weeks to allow for holidays and bad-weather weeks.
*Based on ~21 kg CO₂ absorption per tree per year (varies by region).
Why and what this calculator shows
Context on transport emissions, how the tool works, and why it’s tuned for FAFREES riders.
Why it matters
Transport = 1/4 of global CO₂
Short trips create outsized emissions. Swapping to e-bikes for sub-15km rides cuts most of that footprint—without slowing you down.
What this tool does
Your personal impact in seconds
Adjust your distance, frequency, and current transport mode. The calculator shows annual CO₂ saved and a tree-equivalent so it’s easy to grasp.
Designed for FAFREES
Tuned to e-bike efficiency
We use realistic watt-hour per km and grid factors so the savings reflect how FAFREES rides perform in cities.
How to use
Three quick steps to see your carbon win
Pick your typical route, choose how often you ride, compare with your current mode.
Set your route
Enter your one-way distance for work, errands, or weekend rides.
Choose frequency
How many days per week you’d swap to FAFREES—start small or go all in.
See the impact
Check your annual CO₂ savings, then share the numbers with your crew.
FAFREES in action
Show real FAFREES routes, riders, and everyday setups—commutes, errands, and weekend spins.
Vanliga frågor
Everything you need to know
Common questions about the calculation and the assumptions behind it.