How does the Quarter of Year Calculator work?

Calendar quarters: Q1 Jan–Mar, Q2 Apr–Jun, Q3 Jul–Sep, Q4 Oct–Dec Then: UK financial year starts April 6: Q1 Apr–Jun, Q4 Jan–Mar Then: US fiscal year varies by company — Jan or Oct start common Then: Quarter = floor((month − 1) ÷ 3) + 1.

Can you give an example of how to use the Quarter of Year Calculator?

Example: Input February 15 gives a result of Q1 (calendar) / Q4 (UK fiscal).

Is the Quarter of Year Calculator free to use?

Yes — completely free with no registration, download, or subscription required. All calculations happen instantly in your browser.

How accurate is the Quarter of Year Calculator?

Our Quarter of Year Calculator uses verified mathematical formulas and is accurate to multiple decimal places. Results are calculated in real-time using the same methods used by professionals.

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Quarter of Year Calculator

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A quarter of year calculator determines which financial or calendar quarter a date falls in. Quarters are used in business reporting, tax filing, and financial planning.

Symbol	Name	Unit	Description
date	Date	YYYY-MM-DD	Input date
quarter	Quarter	Q1–Q4	Which quarter of the year
range	Date range	start–end	First and last day of quarter

Calendar Q	Months	UK Financial Q
Q1	Jan–Mar	Q4
Q2	Apr–Jun	Q1
Q3	Jul–Sep	Q2
Q4	Oct–Dec	Q3

References

›UK financial year — HMRC

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Quarter of Year Calculator

Quarter of Year Calculator

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Calendar vs UK Financial Quarters

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Quarter of Year Calculator