Greenhouse Gas Emissions

Free Greenhouse Gas Emissions calculator with clear step-by-step results.

About Greenhouse Gas Emissions

Estimate the environmental impact of greenhouse gas emissions.

Formula

Emissions = activity × emission factor

Worked example

With the default values below, Greenhouse Gas Emissions returns Total Emissions of 250.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Activity unitsminimum 0: 100
Emission factor (kg CO₂e/unit)minimum 0: 2.5

Results

Total Emissions: 250.00 kg CO₂e
Tonnes CO₂e: 0.250
Per Unit: 2.50

Step by step

1Values used
2Formula
3Total Emissions= 250.00 kg CO₂e
4Tonnes CO₂e= 0.250
5Per Unit= 2.50

Assumptions and limits

The result is derived only from the 2 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
Factors vary by source and region.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Factors vary by source and region.

Frequently Asked Questions

How does this calculator work?