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Frequently Asked Questions (FAQ) - Statistics

ITU statistics: Collection, availability, dissemination and definitions

World Telecommunication/ICT Indicators Database (WTID)

ICT Development Index (IDI)

The ICT Development Index (IDI) is a composite index combining 11 indicators (see Figure below) into one benchmark measure that can be used to monitor and compare developments in information and communication technology (ICT) between countries and over time.  The Index is designed to be global and reflect changes taking place in countries at different levels of ICT development. 

ICT Development Index: indicators, reference values and weights
Note: *This corresponds to a log value of 5.99, which was used in the normalization step. Normalization is based on the calculation of the latest IDI and updated every year.
Source: ITU.

The latest IDI data are available in the Measuring the Information Society Report series ( as well as in the interactive data visualization tool available at:

The methodology for calculating the IDI is available at:, as well as in the Chapter 1 and Annex 1 of Measuring the Information Society Report 2016.

ICT Price Basket (IPB)

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