GWP: Gas → CO₂e Converters

Convert a mass of any greenhouse gas to its CO₂-equivalent using IPCC global warming potentials. Each converter carries the assessment basis (AR4 / AR5 / AR6) and 100-year horizon, and reads its GWP live from MasterBrain.

46 converters6 groupsfree, no sign-up

Same topicCalculateCalculators & tools DefineWhat these terms mean DataThe underlying datasets

Start hereConvert kg Methane (CH₄) to CO₂e

Major gases 6

Convert kg Methane (CH₄) to CO₂e Convert kg Nitrous Oxide (N₂O) to CO₂e kg SF₆ to CO₂e Convert kg NF₃ to CO₂e Convert kg SO₂F₂ to CO₂e Convert CO2 to CO2e

Pickers & reverse 2

Convert Any Greenhouse Gas to CO₂e Convert CO2e to a Mass of Gas

HFCs 14

Convert kg HFC-23 to CO2e R-32 / HFC-32 to CO₂e Convert kg HFC-41 to CO₂e Convert kg HFC-125 to CO2e Convert kg HFC-134 to CO₂e Convert R-134a / HFC-134a to CO₂e Convert kg HFC-143 to CO₂e Convert kg HFC-143a to CO2e Convert kg HFC-152a to CO2e Convert kg HFC-227ea to CO2e Convert kg HFC-236fa to CO2e Convert kg HFC-245fa to CO₂e Convert kg HFC-365mfc to CO₂e Convert kg HFC-43-10mee to CO₂e

PFCs 7

Convert kg CF₄ (PFC-14) to CO₂e Convert kg C₂F₆ (PFC-116) to CO₂e Convert kg C₃F₈ (PFC-218) to CO₂e Convert kg C₄F₁₀ (PFC-3-1-10) to CO₂e Convert kg C₅F₁₂ (PFC-4-1-12) to CO₂e Convert kg C₆F₁₄ (PFC-5-1-14) to CO₂e Convert kg c-C₄F₈ (PFC-318) to CO₂e

Refrigerant blends 12

R-404A to CO₂e Convert R-407A to CO₂e R-407C to CO₂e Convert R-407F to CO₂e Convert R-410A to CO₂e Convert R-422D to CO₂e Convert R-448A to CO₂e Convert R-449A to CO₂e Convert R-450A to CO₂e Convert R-452A to CO₂e Convert R-507A to CO₂e Convert R-513A to CO₂e

HFOs & naturals 5

R-1234yf to CO₂e (HFO)Convert R-1234ze to CO2e R-454B to CO₂e R-290 (Propane) to CO₂e R-717 (Ammonia) to CO₂e

The potentials behind these converters

IPCC AR6, 100-year horizon — kg CO₂e per kg of gas

Gas	GWP₁₀₀	Where it comes from
Carbon dioxide (CO₂)	1	the reference gas
Methane, biogenic	27	livestock, landfill
Methane, fossil	29.8	gas leaks, coal mines
Nitrous oxide (N₂O)	273	fertiliser, combustion
HFC-134a	1,530	vehicle air-conditioning
R-410A	2,256	split-system refrigerant
HFC-125	3,740	blend component
Nitrogen trifluoride (NF₃)	17,400	semiconductor etch
Sulphur hexafluoride (SF₆)	24,300	switchgear

Bars are log-scaled: CO₂ is 1 and NF₃ is over seventeen thousand, so a linear bar would render everything below SF₆ as an invisible sliver. Read live from MasterBrain 2026.284.