Scope 1 and 2 emissions calculator

Enter one year of fuel, refrigerant and electricity use. You get tonnes of CO2 equivalent (tCO2e) by scope and by source. This is a screening estimate, not a verified inventory.

Your results

Enter your data and press Calculate.

Scope 3 is not included. Scope 3 covers emissions in your value chain: purchased goods, transport, business travel, use of sold products and, for banks, financed emissions. For most companies it is the largest share. It needs supplier and spend data, so it is out of scope for a quick tool.

Method and sources

Scope 2 is location-based. Results follow the GHG Protocol Corporate Standard approach: activity data times emission factor.

Item	Factor	Source
Natural gas	2.08906 kg CO2e/m³; 56.91 kg CO2e/GJ (net CV)	UK DESNZ GHG Conversion Factors 2025, Natural gas (100% mineral blend)
Diesel	2.66155 kg CO2e/litre	UK DESNZ 2025, Diesel (100% mineral diesel)
Petrol	2.33984 kg CO2e/litre	UK DESNZ 2025, Petrol (100% mineral petrol)
LPG	2.93936 kg CO2e/kg	UK DESNZ 2025, LPG
R-410A	GWP 1924	IPCC Fifth Assessment Report (AR5), 100-year GWP
R-134a	GWP 1300	IPCC Fifth Assessment Report (AR5), 100-year GWP
R-32	GWP 677	IPCC Fifth Assessment Report (AR5), 100-year GWP
R-22	GWP 1760	IPCC Fifth Assessment Report (AR5), 100-year GWP
Grid electricity, Qatar	0.582 kg CO2e/kWh	Ember, carbon intensity of electricity generation, 2024, via Our World in Data
Grid electricity, United Arab Emirates	0.468 kg CO2e/kWh	Ember, carbon intensity of electricity generation, 2024, via Our World in Data
Grid electricity, Saudi Arabia	0.692 kg CO2e/kWh	Ember, carbon intensity of electricity generation, 2024, via Our World in Data
Grid electricity, Oman	0.543 kg CO2e/kWh	Ember, carbon intensity of electricity generation, 2024, via Our World in Data
Grid electricity, Bahrain	0.902 kg CO2e/kWh	Ember, carbon intensity of electricity generation, 2024, via Our World in Data
Grid electricity, Kuwait	0.635 kg CO2e/kWh	Ember, carbon intensity of electricity generation, 2024, via Our World in Data

Notes. DESNZ 100% mineral rows are used because GCC road fuels are not blended with biofuel. DESNZ factors are consistent with IPCC 2006 Guidelines defaults. Ember grid figures are averages of all generation in the country and use lifecycle emission factors, so they can read higher than combustion-only factors. National or utility factors, where published, take priority for formal reporting: enter yours in the optional field. Bahrain's figure is notably high in this dataset; check it against your utility data.

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