Syntax
ISLOGICAL(value)Arguments
The printed syntax lists 1 argument(s), in order:
value
“optional” marks an argument Google prints in square brackets; “repeatable” marks one Google prints with “…”.
Description from Google Docs Editors Help
“Checks whether a value is `TRUE` or `FALSE`.”Google’s help article for ISLOGICAL →
Source: Google Docs Editors Help, “Google Sheets function list” (support.google.com/docs/table/25273), record record 142 of 516, data fetched 28 September 2026. Data month: September 2026.