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Red List Index, 1993 to 2024

The Red List Index shows trends in overall extinction risk for groups of species. It is an index between 0 and 1. Avalue of 1 indicates that there is no current extinction risk to any of the included species. A value of 0 would meanthat all included species are extinct.

1993202419952000200520102015202000.20.40.60.81Brazil

Data source: BirdLife International and IUCN – Learn more about this data

OurWorldinData.org/biodiversity |

Note: Extinction risk estimates for mammals, birds, cycads, amphibians and corals are used to calculate the Red List Index. National andregional Red List Indices are calculated by weighting by the fraction of each species' distribution occurring within them.

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Red List Index

What you should know about this indicator

Red List Index

Further information available at: https://unstats.un.org/sdgs/metadata/files/Metadata-15-05-01.pdf

Red List Index
Red List Index
Source
BirdLife International and IUCN – processed by Our World in Data
Last updated
August 27, 2024
Next expected update
August 2026
Date range
1993–2024
Unit
index

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Our World in Data team

Sources and processing

This data is based on the following sources

The United Nations Sustainable Development Goal (SDG) dataset is the primary collection of data tracking progress towards the SDG indicators, compiled from officially-recognized international sources.

Retrieved on
August 27, 2024
Retrieved from
https://unstats.un.org/sdgs/dataportal
Citation
This is the citation of the original data obtained from the source, prior to any processing or adaptation by Our World in Data. To cite data downloaded from this page, please use the suggested citation given in Reuse This Work below.
BirdLife International and IUCN via UN SDG Indicators Database (https://unstats.un.org/sdgs/dataportal), UN Department of Economic and Social Affairs (accessed 2024). More information available at: https://unstats.un.org/sdgs/metadata/files/Metadata-15-05-01.pdf.

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All data and visualizations on Our World in Data rely on data sourced from one or several original data providers. Preparing this original data involves several processing steps. Depending on the data, this can include standardizing country names and world region definitions, converting units, calculating derived indicators such as per capita measures, as well as adding or adapting metadata such as the name or the description given to an indicator.

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Citations

How to cite this page

To cite this page overall, including any descriptions, FAQs or explanations of the data authored by Our World in Data, please use the following citation:

“Data Page: Red List Index”. Our World in Data (2025). Data adapted from BirdLife International and IUCN. Retrieved from https://ourworldindata.org/grapher/red-list-index [online resource]
How to cite this data

In-line citationIf you have limited space (e.g. in data visualizations), you can use this abbreviated in-line citation:

BirdLife International and IUCN – processed by Our World in Data

Full citation

BirdLife International and IUCN – processed by Our World in Data. “Red List Index” [dataset]. BirdLife International and IUCN, “Data from multiple sources” [original data]. Retrieved March 31, 2025 from https://ourworldindata.org/grapher/red-list-index

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