Quarter Start / End Calculator

Find which standard calendar quarter a date falls in, and that quarter's start and end dates.

Need a fiscal year that doesn't start in January? See Fiscal Quarter Calculator.

Worked example

May 15, 2027 falls in Q2, which runs April 1 through June 30, 2027: standard calendar quarters split the year into three-month blocks starting January, April, July, and October.

Limitations

This uses the standard calendar quarter definition; it does not reflect a fiscal year that starts in a different month. For that, see Fiscal Quarter Calculator.

Frequently asked questions

Does every organization use these quarter boundaries?: No, many organizations use a fiscal year starting in a different month; this engine covers only the standard calendar-year quarters.