Search for emission factors quickly and reliably

The OpenCO2 emissions database provides the latest and most reliable emission factors

The OpenCO2 emissions database included in our services is one of the most comprehensive emissions databases in Europe and brings together all the emission factors you need. The OpenCO2 emissions database provides access to up-to-date, reliable emission factors validated by our experts.

Try our emission factor search below. Search for emission factors by entering keywords in the search field. If there is a blue arrow next to the factor, clicking it will reveal more detailed information, such as the emission factor value. If there is a yellow lock next to the emission factor, you can find the factor on the OpenCO2net platform by creating a free account. You’ll find a total of about 1,000 free emission factors on our platform.

Create an account on the OpenCO2net platform

Name	Country	Year	Source
Hotel stay (room per night), Mexico Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Egypt Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), South Africa Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Singapore Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), France Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Saudi Arabia Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Russian Federation Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Germany Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Romania Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), India Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Qatar Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Indonesia Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Portugal Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Ireland Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Poland Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Italy Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Philippines Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Japan Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Panama Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Jordan Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Oman Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Malaysia Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), New Zealand Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Maldives Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ
Hotel stay (room per night), Korea Service	United Kingdom of Great Britain and Northern Ireland (GB)	2026	OpenCO2net Oy / DEFRA, BEIS, DESNZ

Instructions for using the emissions database

How to search for emission factors?

Search for emission factors by entering keywords in the search field. When you search for emission factors, the results will show the name of the emission factor, its geographic scope, the year it was updated, and its source. By entering multiple search terms, you can narrow your search further, for example, to products from a specific company or services offered in a specific region. For more information about an emission factor, click on it.

If there is a blue arrow next to the factor, clicking it will reveal more detailed information, such as the emission factor value. If there is a yellow lock next to the emission factor, you can find the factor on the OpenCO2net platform by creating a free account. You can find a total of approximately 1,000 free emission factors on our platform.

What emission factors do we use in the database?

Our paid emissions database includes emission factors collected from public sources and directly from companies. We only collect non-corporate emission factors from the best available sources, such as research institute publications and scientific articles. We carefully review the constraints and assumptions underlying the calculation of each emission factor. DNV has validated the OpenCO2net data collection process.

What is the difference between the paid and the free emissions database?

OpenCO2 emission database is one of the most extensive in Europe and is designed for the needs of companies.

The free emissions database is a limited version of our extensive emissions database. You have access to the most common emission factors associated with everyday life.

How do I get access to the extensive emissions database?

Why choose the OpenCO2 emission database?

The OpenCO2 emissions database contains more than 9,000 validated and up-to-date emission factors. We have compiled all the emission factors you need to make your calculations as easy and reliable as possible.

Up-to-date

The OpenCO2 emissions database is updated regularly so that you always have access to the latest and most up-to-date emission factors.

Reliable

The data collection process for the OpenCO2 emissions database is validated by DNV and maintained by emissions calculation experts.

High-quality

The emissions database contains only emission factors from reliable sources that have been verified by experts.

Do you need emission factors?

Book a free consultation

Free and limited emissions database

Search for the emission factor of, for example, the electricity you use, the car you own, air travel, or beef. You can view information and background data on approximately 50 emission factors free of charge and without logging in. You can view over 1,000 emission factors and their background information by creating an account on our OpenCO2net platform. By purchasing access to our calculators, you will have access to the entire OpenCO2 emissions database, which currently contains more than 9,000 emission factors. Explore the database below.

Get emission factors

Comprehensive emissions database for a fee

Our emissions database, available for a fee, is the most comprehensive in Finland. By purchasing OpenCO2net access rights or the OpenCO2 API interface for your company, you can obtain the emission factors you need from our OpenCO2 emissions database, which contains more than 9,000 emission factors, as well as access to Ecoinvent emission factors. OpenCO2net’s data collection process is validated by DNV, and the emissions database contains carefully assessed emission factors collected from both public sources and companies. If you would like to discuss access rights, please contact us using the form below.

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Please contact us using the form below or directly through our expert, and we will work with you to determine which OpenCO2net services would best suit your needs.

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Sari Siitonen
Founder, CEO
sari(a)openco2.net
+358 40 761 5221