Calculating your co₂ emissions is straightforward once you know the Flight Carbon Footprint formula and what each input means. This guide explains the method in plain language, walks through a manual calculation, and gives worked examples you can follow — then you can do it instantly with the Flight Carbon Footprint Calculator.
What is Flight Carbon Footprint?
The Flight Carbon Footprint calculation tells you your co₂ emissions from a few simple inputs. The figure you are solving for here is the co₂ emissions.
The Flight Carbon Footprint formula
The core formula is:
CO₂ emissions = Flight distance × 0.15 × Number of passengersHere is what each input means:
- Flight distance — a value measured in km. Example: 2,000 km.
- Number of passengers — a number. Example: 1.
How to calculate it step by step
- Write down the flight distance (for example, 2,000 km).
- Write down the number of passengers (for example, 1).
- Apply the formula above to get your co₂ emissions.
- Double-check the result with the Flight Carbon Footprint Calculator.
Worked examples
Example 1
| Input / Output | Value |
|---|---|
| Flight distance | 2,000 km |
| Number of passengers | 1 |
| CO₂ emissions | 300.0 |
| Trees to offset (per year) | 14.3 |
With flight distance of 2,000 km and number of passengers of 1, the co₂ emissions works out to 300.0.
Example 2
With flight distance of 4,000 km and number of passengers of 1, the co₂ emissions works out to 600.0.
| Result | Value |
|---|---|
| CO₂ emissions | 600.0 |
| Trees to offset (per year) | 28.6 |
Example 3
With flight distance of 1,000 km and number of passengers of 1, the co₂ emissions works out to 150.0.
| Result | Value |
|---|---|
| CO₂ emissions | 150.0 |
| Trees to offset (per year) | 7.1 |
Tips for an accurate result
- Keep your units consistent — mixing, say, months with years or grams with kilograms is the most common source of error.
- Round only at the very end. Rounding inputs early can shift the final answer noticeably.
- Re-run the numbers whenever an input changes, rather than estimating from an old result.
Prefer not to do the maths by hand? — the Flight Carbon Footprint Calculator does it instantly, for free, with the formula and a worked example built in.
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