Quarter of the Year Calculator
Finds the quarter for a date, on a calendar year or any financial year.
Quarter
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Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Starts —
Ends —
Day of the quarter —
Days left in the quarter — days
Days in the quarter — days
Reading this —
The formula
quarter = whole 3-month blocks since the year’s first month + 1
A quarter is three calendar months, so its length runs from 89 to 92 days.
What to watch out for
The days left do not count the date itself.
Frequently Asked Questions
What months are in each quarter?
In a calendar year, Q1 is January to March, Q2 is April to June, Q3 is July to September and Q4 is October to December.
How long is a quarter?
90 to 92 days in a calendar year. Q1 of 2025 has 90 days and Q3 has 92.