Time & dates
Quarter dates calculator
Pick a date and your fiscal year start to see its calendar and fiscal quarter, the quarter's start and end dates and the days remaining.
Set the fiscal year start to January for plain calendar quarters, or to your organisation's start month.
How a quarter is identified
A quarter is a block of three consecutive months, so a year holds four of them. For calendar quarters the number comes straight from the month: quarter = ⌊(month − 1) ÷ 3⌋ + 1, with January as month 1. October is month 10, and ⌊9 ÷ 3⌋ + 1 = 4, so 24 October 2026 sits in Q4 2026, a quarter that runs from 1 October to 31 December. The first day of any calendar quarter is the 1st of its opening month, and the last day is the end of its third month.
A fiscal quarter uses the same three-month blocks but starts counting from your organisation's fiscal year, not from January. If the fiscal year begins in April, then April to June is fiscal Q1, and October falls in fiscal Q3 even though it is calendar Q4. The calculator counts the months elapsed since your chosen start month and divides by three to place the date in the right fiscal quarter.
| Quarter | Calendar months | Days |
|---|---|---|
| Q1 | January – March | 90 or 91 |
| Q2 | April – June | 91 |
| Q3 | July – September | 92 |
| Q4 | October – December | 92 |
Calendar versus fiscal quarters
Many governments and companies do not align their year with the calendar. The US federal fiscal year starts on 1 October, the United Kingdom and Japan commonly use April, and Australia uses July, which is why the same calendar date can carry two different quarter labels. Pick the start month that matches your reporting and the fiscal quarter updates to suit. The progress bar and the days-left figure count whole days to the final day of the quarter, which is useful for pacing targets: a sales goal is easier to manage as an amount per day remaining than as one lump at quarter end. Q1 gains a day in leap years, when February has 29 days.
Frequently asked questions
Which quarter is a given month in?
January to March is Q1, April to June is Q2, July to September is Q3, and October to December is Q4 on the calendar. Fiscal quarters shift this by your fiscal year start.
What are the start and end dates of each quarter?
Calendar quarters run 1 Jan–31 Mar, 1 Apr–30 Jun, 1 Jul–30 Sep and 1 Oct–31 Dec. Each begins on the 1st of its first month and ends on the last day of its third.
What is the difference between a calendar and a fiscal quarter?
Both are three-month blocks, but a fiscal quarter counts from an organisation's fiscal year start rather than January, so April–June can be fiscal Q1 instead of Q2.