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Travel carbon estimate calculator
Estimate trip emissions using a factor supplied by the user.
On this page
Total travel distance1,000km
Estimated emissions180KG CO₂e
Estimated emissions0.18t CO₂e
Calculator controls
How to calculate
Estimate trip emissions using a factor supplied by the user.
emissions = distance × trips × supplied emission factor
Worked example
One-way distance (km): 500; Number of one-way trips: 2; Emission factor (kg CO₂e/km): 0.18.
Total travel distance: 1,000 km; Estimated emissions: 180 kg CO₂e; Estimated emissions: 0.18 t CO₂e.
Assumptions and limits
Use a current factor appropriate to vehicle, occupancy, route, fuel, and accounting method. This tool does not supply an official factor.
Results are rounded for display; calculations use unrounded values. Read our calculation methodology.
Understanding the result
Estimate trip emissions using a factor supplied by the user. Every assumption remains visible so the result can be checked or changed.
When this tool is useful
Use the travel carbon estimate for an initial estimate, comparison, or classroom calculation.
Understanding your inputs
| Input | What to enter |
|---|---|
| One-way distance (km) | Enter a number of at least 0 and no more than 1000000000000. |
| Number of one-way trips | Enter a number of at least 0 and no more than 100000. |
| Emission factor (kg CO₂e/km) | Enter a number of at least 0 and no more than 1000000000000. |
Frequently asked questions
What are the limits of this travel carbon estimate?
Use a current factor appropriate to vehicle, occupancy, route, fuel, and accounting method. This tool does not supply an official factor.
Can I use different units?
Use the units printed beside each field. Convert measurements first when your source uses different units.