Quarter Calculator

Find the quarter that contains a date

A calendar quarter is a three-month block inside a year that starts on January 1. Q1 runs January through March, Q2 April through June, Q3 July through September, and Q4 October through December. Many companies and the US federal government use a fiscal year that starts in a different month. This calculator places any date in the matching quarter, lists all four quarters for that year, and counts how many days have passed and how many remain.

How the fiscal year is numbered

When the year starts in January, the quarter label uses the calendar year, such as Q2 2026. For any other start month, the fiscal year is named by the calendar year in which it ends. A year that starts in October 2025 and ends in September 2026 is FY2026. May 14, 2026 then falls in Q3 of that fiscal year, because October to December is Q1 and January to March is Q2.

Day counts include the selected date in the elapsed total. Remaining days are the dates after the selected day through the last day of the quarter. The share passed is elapsed days divided by the number of days in that quarter, so a 91-day quarter is not treated as exactly 90 days.

Related tools

To move a date forward or backward by a number of days, use the Date Calculator. For the length of an arbitrary span, use Find Date Difference or the Day Counter.