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Calendar Calculators

Quarter Calculator

Which fiscal or calendar quarter a date falls in, with the quarter’s start and end dates.

Also known as fiscal quarter calculator, what quarter is it, q1 q2 q3 q4 dates.

Enter values

Results update as you type.

Result

Quarter

Q4

Quarter starts
Thursday, October 1, 2026
Quarter ends
Thursday, December 31, 2026
Days into the quarter
37
Days remaining
55
Quarter completed
40.2%
Fiscal year
2026

About the Quarter Calculator

Which fiscal or calendar quarter a date falls in, with the quarter’s start and end dates.

Also known as: fiscal quarter calculator, what quarter is it, q1 q2 q3 q4 dates, business quarter.

How to use this calculator

  1. Enter date, fiscal year starts in.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Quarter formula

quarter = floor(months since the fiscal year start ÷ 3) + 1

Worked example

Using the values pre-filled in the calculator above:

  • Date: 2026-11-06
  • Fiscal year starts in: January (calendar year)

the calculator returns:

  • Quarter: Q4
  • Quarter starts: Thursday, October 1, 2026
  • Quarter ends: Thursday, December 31, 2026
  • Days into the quarter: 37