How Many Weeks Are Left in Q4 2026?

A quarter has 13 weeks. A standard calendar year has 52 weeks: divide by four equal quarters and you get exactly 13 weeks per quarter. Depending on whether you are talking about a calendar quarter, a fiscal quarter, or an academic quarter, the dates and definitions shift. Use the tracker below to see live counts for all four quarters.

Q4 2026 · 1 Oct 2026 to 31 Dec 2026

11

Weeks remaining

1

Weeks passed

79

Days remaining

31 Dec 2026

Quarter end

All quarters: 2026

QuarterDate rangeWeeksStatus
Q11 Jan 2026 – 31 Mar 202612Complete
Q21 Apr 2026 – 30 June 202613Complete
Q31 July 2026 – 30 Sept 202613Complete
Q4←1 Oct 2026 – 31 Dec 202613Current

The simple math behind 13 weeks

A year has 365 days: 52 weeks and 1 extra day. Dividing by 4 quarters gives roughly 13 weeks per quarter on average. Q2, Q3, and Q4 each have exactly 91 or 92 days: 13 full weeks. Q1 (January–March) typically has 90 days, which is only 12 complete 7-day weeks plus 6 extra days.

The table below shows the actual computed full-week count for each quarter in 2026.

QuarterMonthsFull WeeksDays
Q1January, February, March1290
Q2April, May, June1391
Q3July, August, September1392
Q4October, November, December1392

Q1 has fewer days because February is short. The week count shown is the number of complete 7-day periods in each quarter; the remaining days (up to 6) do not form an additional full week.

Calendar quarter vs fiscal quarter

A calendar quarter follows the standard January to December year. Q1 always starts January 1 and Q4 always ends December 31.

A fiscal quarter is different. Many businesses and governments use a fiscal year that does not start in January. Their quarters are still 13 weeks long, but the dates shift. The US federal government's fiscal year starts October 1, making October–December their Q1. Microsoft's fiscal year starts July 1. Apple's starts in October. The UK and Japan start April 1.

Always check which fiscal calendar is being used before comparing quarterly data. "Q1 results" from one company may cover completely different months than "Q1 results" from another.

For calendar quarter tracking (which is what this page shows), Q4 2026 runs from October 1 to December 31, 2026.

When a quarter has 14 weeks

Some industries use the 4-4-5 calendar, where each 13-week quarter is divided into reporting periods of 4 weeks, 4 weeks, and 5 weeks. Retailers use it most often to keep the number of weekend days consistent across comparable periods year to year: weekend sales can be a large portion of total revenue, so this prevents misleading comparisons.

The tradeoff is that the 4-4-5 calendar has only 364 days (52 weeks × 7). One extra day is left over each year. Every five or six years, a 53rd week must be added to realign with the actual calendar. In that year, one quarter ends up with 14 weeks instead of 13.

If you see a company reporting unusually strong quarterly results and they operate on a 52-53 week fiscal calendar, check whether that quarter had 14 weeks. The extra week of trading activity may explain the numbers more than any underlying business trend.

Using 13 weeks for better planning

OKRs (Objectives and Key Results) are almost always set quarterly. The quarter gives a long enough horizon for meaningful work but a short enough deadline to prevent drift. With 13 weeks per quarter, there are 13 distinct weekly check-in points (one per week) to assess progress against each key result.

Breaking quarterly goals into weekly milestones is the most reliable way to hit them. If your Q4 target is to publish 13 articles, that is one per week. If it is to close 26 deals, that is 2 per week. The math only works when you know the weeks remaining.

Sprint planning in Agile teams typically uses two-week sprints. A 13-week quarter fits 6 full two-week sprints with one week left over for a retrospective. Sales teams track quota attainment by week within the quarter: knowing you are at 70% with 4 weeks left tells you exactly what close rate is needed per week to hit the number.

Estimated tax payments in many countries are also due quarterly. Knowing exactly when each quarter ends helps you avoid missed deadlines. And a 13-week quarter has roughly 61 to 66 working days after removing weekends and public holidays. Q1 and Q4 usually have the fewest after US federal holidays (in 2026, Q1 has 61 and Q4 has 62).

Frequently Asked Questions

How many weeks are in a quarter?

A standard quarter has 13 weeks. This comes from dividing 52 weeks in a year by 4 quarters. Each quarter covers 3 months of the calendar year.

How many days are in a quarter?

Q1 has 90 days in a standard year (91 in a leap year). Q2 has 91 days. Q3 and Q4 each have 92 days. The total is 365 days.

Is a quarter 3 months or 4 months?

A quarter is 3 months. There are 4 quarters in a year, and 12 months divided by 4 equals 3. The confusion sometimes comes from academic contexts where a "quarter" can mean a different length of time.

What is the difference between a fiscal quarter and a calendar quarter?

A calendar quarter always runs January through March, April through June, July through September, or October through December. A fiscal quarter follows the same 3-month structure but starts at a different point in the year, depending on when a company or government's fiscal year begins.

Can a quarter have more than 13 weeks?

Yes. Companies that define their fiscal year in weeks (52 or 53 weeks) need to add an extra week every five or six years. When this happens, one quarter in that year has 14 weeks instead of 13.

How many working days are in a quarter?

Typically between 61 and 66 working days per quarter, depending on which quarter and how many public holidays fall on weekdays that year. After US federal holidays, Q1 and Q4 usually have the fewest.

What quarter are we in right now?

The tracker at the top of this page shows the current quarter and updates automatically. Q1 runs January to March, Q2 April to June, Q3 July to September, and Q4 October to December.

How does the 4-4-5 retail calendar work?

The 4-4-5 calendar divides each 13-week quarter into three reporting periods of 4 weeks, 4 weeks, and 5 weeks. This keeps the number of weekend days consistent across comparable periods year to year, which makes sales comparisons more accurate.

Why do some universities use 10-week quarters instead of 13 weeks?

Academic quarters measure weeks of instruction, not calendar time. A typical 10-week academic quarter is followed by an exam period or break. The academic calendar does not need to align with business reporting cycles, so universities structure their terms around course delivery needs.

Does a leap year change how many weeks are in a quarter?

No, a leap year does not change the number of weeks in a quarter. Each quarter still has 13 weeks. The only difference is that Q1 has one extra day (February 29), bringing the total to 91 days instead of 90.

What is the 12-week year productivity method?

The 12-week year is a planning approach popularized by Brian Moran that treats each 12-week period as a full year. Instead of setting annual goals that feel distant, you set goals for each 12-week cycle with the urgency of a year-end deadline. While similar to a quarter, a 12-week year runs 84 days and is one week shorter than a 13-week business quarter.

How do OKRs relate to quarterly planning?

OKRs (Objectives and Key Results) are most commonly set and reviewed on a quarterly cycle. Teams set objectives at the start of each 13-week quarter and check in weekly or monthly on progress. The quarter gives enough time to achieve meaningful results while keeping goals fresh and relevant.

Why does Q4 have fewer working days than Q3?

Q4 (October through December) has the same 92 calendar days as Q3, but it usually has more US federal holidays on weekdays: Columbus Day, Veterans Day, Thanksgiving, and Christmas, against Independence Day and Labor Day in Q3. That usually leaves Q4 with fewer working days than Q3, but not always the fewest of the year. Q1 has fewer calendar days and often ends up just as low or lower.

Can I use quarterly planning if I am self-employed or a freelancer?

Absolutely. Quarterly planning works well for freelancers. It aligns with estimated tax payment schedules in many countries and gives a clear planning window for setting revenue goals, booking clients, and managing project pipelines. Many freelancers plan 3-month sprints exactly because 13 weeks is long enough to complete a significant body of work.

How many weeks is 3 months?

For the full answer, see our Weeks in Month page.

Does the calculator account for leap years?

For the full answer, see our Weeks Left in the Year page.

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