Greenhouse Gas Unit Converter

Convert greenhouse gas quantities into carbon dioxide equivalent (CO₂e) and estimate the comparable electricity consumption using your emission factor of choice.

Numeric amount of the gas in the unit you specify below.
Global Warming Potential over 100 years (CO₂ = 1, CH₄ = 27.2, N₂O = 273).
Optional. Leave blank if your quantity is already in kilograms; use 1,000 for metric tonnes, 0.4536 for pounds, etc.
Optional. Default 0.233 kg/kWh (UK grid 2023). Adjust for your local electricity emission factor.

Examples

  • 2.4 metric tonnes CO₂e (GWP = 1, multiplier 1,000) with 0.25 kg/kWh ⇒ Result: CO₂e: 2,400.00 kg | Electricity equivalent: 9,600.00 kWh
  • 15 kg CH₄, GWP = 27.2, default factor ⇒ Result: CO₂e: 408.00 kg | Electricity equivalent: 1,751.07 kWh

FAQ

Can I model short-lived climate pollutants?

Yes. Replace the GWP with a 20-year value (GWP₂₀) if that is the standard for your report and label the result accordingly.

How do I convert to gallons of gasoline?

Set the kWh factor aside and instead divide the CO₂e output by 8.89 kg per gallon (US EPA) manually to estimate fuel equivalents.

Do I need to enter negative numbers for sequestration?

You can enter negative quantities to represent carbon removals. The converter will output negative CO₂e and kWh equivalents accordingly.

Additional Information

  • CO₂e converts other greenhouse gases into the equivalent mass of CO₂ based on their 100-year global warming potential.
  • Set the unit multiplier to translate tonnes, pounds, or other measures into kilograms before applying the GWP factor.
  • Electricity equivalence uses your supplied emission factor to express how much grid power would emit the same CO₂e.
  • Update factors annually to align with IPCC AR6 or national inventories for more accurate reporting.

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