The World Christian Database (WCD), available through Brill, is a research resource offering comprehensive statistical information on global Christianity, other world religions, and Christian activities. Its coverage spans all 237 countries and includes data on thousands of Christian denominations, ethnolinguistic peoples, cities, and provinces. Users can explore 18 categories of religion, including non-religious populations, and examine religious patterns by country, province, and people group.

The database also provides information on denominational membership, founding dates, and rates of change, alongside population and religion statistics for major cities and provinces. Detailed profiles of peoples and languages address religious, cultural, and geographic topics. An archive contains historical material, including a chronology of Christianity from the first through the twenty-first centuries.

Designed to turn updated statistics into practical analysis, the WCD enables users to customize reports and download data for charts, tables, and graphs. The complementary World Religion Database offers source material on religious affiliation, including census information, religious diversity, and religious freedom