Examples
Examples
Try the starting example
- Cargo mass by leg (tonnes)
- 1,2
- Leg distances (km)
- 100,50
- Entered emission factors (kg CO2e/tonne-km)
- 0.1,0.2
- Factor source and accounting boundary
- User scenario; kg CO2e per tonne-km
- Scenario emissions by leg (kg CO2e)
- 10, 20
- Total scenario emissions (kg CO2e)
- 30
- Entered factor provenance
- User scenario; kg CO2e per tonne-km
Try another scenario
- Cargo mass by leg (tonnes)
- 0.5
- Leg distances (km)
- 200
- Entered emission factors (kg CO2e/tonne-km)
- 0.1
- Factor source and accounting boundary
- Illustrative road factor
- Scenario emissions by leg (kg CO2e)
- 10
- Total scenario emissions (kg CO2e)
- 10
- Entered factor provenance
- Illustrative road factor
Calculation method
Calculation method
Scenario emissions by leg (kg CO2e)
For every matched leg: tonnes × km × kg CO2e per tonne-km.
Total scenario emissions (kg CO2e)
Add leg emissions.
Entered factor provenance
Retain the user-provided factor source and system boundary without treating it as verified.
Symbols and units
- a
- Cargo mass by leg (tonnes)
- b
- Leg distances (km)
- c
- Entered emission factors (kg CO2e/tonne-km)
- d
- Factor source and accounting boundary
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- A factor-based scenario using your supplied tonne-km factors. No mode-specific factor, lifecycle boundary or empty-running adjustment is invented. The provenance field records your source, not independent verification of it.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
OpenStax: arithmetic and geometry ↗
Background reading; this does not imply endorsement or independent review of SumFizz.