Churches can be measured and compared in several ways. These include area, volume, length, width, height, and seating capacity. Several churches individually claim to be "the largest church", which may be due to any one of these criteria. This article provides a table of large churches that can be re-sorted (and automatically re-ranked) according to each criterion, by clicking on the column headings.
Criteria for inclusion The building was originally constructed for the purpose of holding Christian religious services (see Church (building) for more detail), and was not built as a shrine, tabernacle, temple, or for any other function different from that of a church. Entries are included even if they currently do not function as a church. For example, the Hagia Sophia is included; it was originally built as a church but currently operates as a mosque. Buildings that were not originally constructed as churches are generally not included; for example, the Lakewood Church building, which was built as The Summit. An exception is made for buildings that have been substantially modified for use as a church; for example, the Mosque–Cathedral of Córdoba. The building must still be standing. The building's internal floor area is known to be more than . Internal floor area is measured to the internal face of the external walls. External floor area is measured to the external face of the external walls. A reliable source is present that states the building's area.
List Church measurements have often been reported in ways that are vague or inconsistent, and the accuracy of the list is limited by the availability of reliable published data that is consistent with the criteria used in this article.