๐ Calendar Quarter (Q1-Q4) Calculator
Calculates the calendar-year quarter (starting in January).
Enter a date to calculate which standard calendar-year quarter it falls in (Q1: Jan-Mar, Q2: Apr-Jun, Q3: Jul-Sep, Q4: Oct-Dec), along with that quarter's start and end dates and how many days remain until it ends.
How to use
- Enter a date.
- The quarter, its date range, and days remaining are shown automatically.
How the calculation works
Enter a date to see which calendar-year quarter (January start) it falls in, the quarterโs dates and the days left until the quarter ends. It starts with todayโs date. Q1: JanuaryโMarch (90 days, 91 in a leap year) Q2: AprilโJune (91 days) Q3: JulyโSeptember (92 days) Q4: OctoberโDecember (92 days) The days left include the entered date up to the last day of the quarter. Useful wherever quarters follow the calendar year: US company earnings, statistics such as GDP, or goal setting with OKRs.
Worked example
September 19, 2026 โ Q3 2026 (2026-07-01 to 2026-09-30) Days left in the quarter: 12 (September 19โ30) September 30, 2026 โ 1 day left October 1, 2026 โ Q4, 92 days left
Things to be aware of
- Many Japanese companies and government bodies use an April-start fiscal year, so their quarters differ. Use the Fiscal Year Calculator for those.
- Some companiesโ fiscal quarters are different again (for example, starting in July).
- The first half (JanuaryโJune) is Q1 and Q2; the second half (JulyโDecember) is Q3 and Q4.
FAQ
How are the quarters divided?
Based on the calendar year (starting in January): Q1 is Jan-Mar, Q2 is Apr-Jun, Q3 is Jul-Sep, and Q4 is Oct-Dec. Note this differs from an April-starting fiscal year, which many Japanese companies use.
I need quarters for an April-starting fiscal year instead.
For the April-starting fiscal year and quarters commonly used by Japanese companies, use the Fiscal Year Calculator instead. This tool calculates calendar-year (January-starting) quarters.
Does "days remaining" include today?
Yes. It counts the number of days from the entered date (inclusive) through the last day of that quarter.