About UCDP

The Uppsala Conflict Data Program (UCDP) has recorded ongoing violent conflicts since the 1970s. The data provided is one of the most accurate and well-used data-sources on global armed conflicts and its definition of armed conflict is becoming a standard in how conflicts are systematically defined and studied.

More about UCDP

Contact UCDP

Lecture on Peace Research by Peter Wallensteen

The Department has recorded a lecture on the origins and developments of peace research globally and at Uppsala University with Professor Peter Wallensteen.

Watch the lecture.

Charts, Graphs and Maps

Table of contents:

The Uppsala Conflict Data Program (UCDP) offers a number of datasets on organised violence and peacemaking, all of which can be downloaded for free through the download section. A number of illustrative charts and graphs are also available for free download and are updated on a yearly basis. Please always include the citation provided below when using the charts and graphs.

All three UCDP categories 1989-2015

Fatalities by type of violence (including Rwanda 1994)

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.

For more information see the UCDP Battle-Related Deaths DatasetUCDP Non-state Conflict DatasetUCDP One-sided Violence Dataset


Fatalities by type of violence (excluding Rwanda 1994)

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742. 

For more information see the UCDP Battle-Related Deaths DatasetUCDP Non-state Conflict DatasetUCDP One-sided Violence Dataset

State-based conflicts 1946-2015

Armed conflicts by region and year   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742. 

For more information see the UCDP/PRIO Armed Conflict Dataset 


Armed conflicts by type of incompatibility   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.     

For more information see the UCDP/PRIO Armed Conflict Dataset


Armed conflicts by conflict type and year   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.    

For more information see the UCDP/PRIO Armed Conflict Dataset


Armed conflicts by intensity and year   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.    

For more information see the UCDP/PRIO Armed Conflict Dataset


Map of the world's conflicts in 2015 

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.   

For more information see the UCDP/PRIO Armed Conflict Dataset


Active dyads and conflicts by year   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.   

For more information see the UCDP/PRIO Armed Conflict Dataset


State-based conflicts 1989-2015

Battle-related deaths by region

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.      

For more information see the UCDP Battle-Related Deaths Dataset


Battle-related deaths by type of conflict

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.      

For more information see the UCDP Battle-Related Deaths Dataset


Battle-related deaths by type of incompatibility 

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.  

For more information see the UCDP Battle-Related Deaths Dataset


Non-state conflicts 1989-2015

Non-state conflicts by year

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742. 

For more information see the UCDP Non-state Conflict Dataset

Non-state conflicts by region   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742. 

For more information see the UCDP Non-state Conflict Dataset


Non-State fatalities by year   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742. 

For more information see the UCDP Non-state Conflict Dataset


One-sided violence 1989-2015

One-sided fatalities by year   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742. 

For more information see the UCDP One-sided Violence Dataset 


One-sided actors by region   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742.  

For more information see the UCDP One-sided Violence Dataset 


One-sided actors by type  

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742. 

For more information see the UCDP One-sided Violence Dataset


One-sided fatalities by type of actor   

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Please cite: Melander, Erik, Therése Pettersson, and Lotta Themnér (2016) Organized violence, 1989-2015. Journal of Peace Research 53(5):727-742. 

For more information see the UCDP One-sided Violence Dataset