Free online GWP calculator

CO2e to Gas Amount Calculator

Calculate carbon dioxide equivalent emissions with Global Warming Potential values for greenhouse gases and refrigerants. Use the tool for sustainability reporting, HVAC refrigerant estimates, inventories, and emissions documentation.

CO2e resultsGWP formulaRefrigerant referenceFree online use

CO2e to Gas Amount Calculator

Enter a gas amount or select a reference gas. Results update automatically.

Result updates automatically.

Formula: CO2e = gas amount x GWP.

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How GWP and CO2e Work

Global Warming Potential compares the warming impact of a gas with carbon dioxide over a defined time horizon, commonly 100 years. Carbon dioxide equivalent is calculated by multiplying the mass of a gas by its GWP value.

CO2

GWP 1

CH4

GWP 28

R-134a

GWP 1430

GWP Formula Notes

CO2e = gas mass x GWP. For reverse calculations, gas mass = CO2e / GWP. Always use the reporting standard and assessment report required for your inventory.

kg CO2ekg gas x GWP
tonnes CO2emetric tonnes gas x GWP
Gas amountCO2e divided by GWP

CO2e to Gas Amount Calculator FAQ

What does CO2e mean?

CO2e means carbon dioxide equivalent. It expresses the climate impact of different gases using carbon dioxide as the reference.

Which GWP value should I use?

Use the value required by your reporting program, regulation, or inventory method. Different standards may use different assessment reports.

Can this estimate refrigerant emissions?

Yes. Enter the leaked or charged refrigerant mass and select the refrigerant GWP to estimate CO2e.