What is radiative forcing?

Radiative forcing accounts for the fact that emissions at high altitude have a greater warming effect than the same emissions at ground level, amplifying impact by roughly 1.9x.

Why does cabin class matter?

Business and first class seats take up more floor space, so each passenger is allocated a larger share of total fuel burn.

How can I reduce flight emissions?

Fly economy class, choose direct flights, fly less frequently, or purchase verified carbon offsets.

Flight Emissions Calculator

Estimate CO2 emissions from air travel based on flight distance and cabin class with radiative forcing multiplier.

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One-Way Flight Distance

miles

Round Trip Multiplier

1 or 2

Cabin Class Factor

multiplier

Number of Travelers

CO2 Emissions (with RF)

1.90 metric tons

Total CO2 (lbs)4,180 lbs

CO2 per Mile0.84 lbs/mile

CO2 Emissions (with RF) vs One-Way Flight Distance

View formula & how it works →

How to Calculate Flight Emissions

Air travel emissions depend on distance, cabin class, and the radiative forcing effect at altitude.

Formula

CO2 = Distance * 0.44 lbs/mile * Cabin Factor * 1.9 (RF)

0.44 lbs CO2 per passenger-mile is the commercial aviation average

Cabin class: Economy = 1x, Business = 1.5x, First = 3x

Radiative forcing (1.9x) accounts for contrails and high-altitude effects

Example Calculation

A round-trip economy flight of 2,500 miles each way for one person.

01Total distance: 2,500 * 2 = 5,000 miles
02Base CO2: 5,000 * 0.44 * 1.0 = 2,200 lbs
03With radiative forcing: 2,200 * 1.9 = 4,180 lbs
04In metric tons: 4,180 / 2,204.6 = 1.90 metric tons

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