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Welcome to Tor Metrics, the primary place to learn interesting facts about the Tor network, the largest deployed anonymity network to date. If something can be measured safely, you'll find it here.*

*And if you come across something that is missing here, please let us know.

"Tor metrics are the ammunition that lets Tor and other security advocates argue for a more private and secure Internet from a position of data, rather than just dogma or perspective." - Bruce Schneier (June 1, 2016)





Name Tags Type Level
Relays and bridges in the network Relays, Bridges Graph Basic
Relays with Exit, Fast, Guard, Stable, and HSDir flags Relays Graph Basic
Relays by version Relays, Diversity Graph Basic
Relays by platform Relays, Diversity Graph Basic
Total relay bandwidth in the network Relays, Bandwidth Graph Basic
Relay bandwidth by Exit and/or Guard flags Relays, Bandwidth Graph Basic
Advertised bandwidth and bandwidth history by relay flags Relays, Bandwidth Graph Basic
Number of bytes spent on answering directory requests Relays, Bandwidth Graph Basic
Advertised bandwidth distribution Relays, Bandwidth Graph Basic
Advertised bandwidth of n-th fastest relays Relays, Bandwidth Graph Basic
Network bubble graphs Relays, Diversity Graph Basic
Data flow in the Tor network Relays, Hidden services, Bandwidth Link Basic
Monthly uptime of relays Relays Link Advanced
Network churn rate by relay flag Relays Link Advanced
Number of relays and bridges Relays, Bridges, Diversity Data Advanced
Bandwidth provided and consumed by relays Relays, Bandwidth Data Advanced
Advertised bandwidth distribution and n-th fastest relays Relays, Bandwidth Data Advanced
Disagreement among the directory authorities (deprecated) Relays Data Advanced

About Tor Metrics

This material is supported in part by the National Science Foundation under Grant No. CNS-0959138. Any opinions, finding, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

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Data on this site is freely available under a CC0 no copyright declaration: To the extent possible under law, the Tor Project has waived all copyright and related or neighboring rights in the data. Graphs are licensed under a Creative Commons Attribution 3.0 United States License.