Enter any date and find out which fiscal or calendar quarter it belongs to. The Quarter Calculator shows the quarter number (Q1–Q4), the start and end dates of that quarter, and how many days remain in the quarter — based on either a standard calendar year or a custom fiscal year start month.
Quarter
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Quarter Start Date
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Quarter End Date
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Days Elapsed in Quarter
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Days Remaining in Quarter
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Total Days in Quarter
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Quarter Progress
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In a standard calendar year, Q1 covers January–March, Q2 covers April–June, Q3 covers July–September, and Q4 covers October–December. Each quarter spans exactly three months, though the total number of days varies between 89 and 92 depending on the months involved.
A fiscal quarter is any three-month period used for financial reporting, but it doesn't have to align with the calendar year. For example, the US federal fiscal year starts in October, making Q1 October–December. Companies and governments choose fiscal year start dates that best suit their business cycles.
It depends on your organization or country. US companies commonly use January (calendar year) or October (US federal government). The UK and India use April, Australia and New Zealand use July. If you're unsure, January is the default and matches the standard calendar year.
Quarters span three calendar months, but months have different lengths (28–31 days). As a result, one quarter can range from 89 days (when February is included in a non-leap year) to 92 days (when all three months are long ones). This calculator accounts for leap years automatically.
The calculator finds the last day of the quarter that contains your selected date, then counts the number of days from your date to that end date (inclusive of the end date). This tells you how many days are left before the quarter closes.
Academic quarters vary widely by institution and don't follow fixed calendar months, so this tool is best suited for fiscal or calendar quarters. However, you can set a custom fiscal year start month to approximate your academic year's quarter structure if it aligns with monthly boundaries.
Yes. When your date or the fiscal quarter includes February, the calculator correctly uses 28 or 29 days depending on whether the year is a leap year, ensuring accurate total days and days-remaining calculations.
In a calendar year, Q1 is always January–March. In a fiscal year starting in, say, April, Q1 becomes April–June and Q4 becomes January–March of the following year. The quarter numbering resets relative to whichever month the fiscal year begins.