How many hours in a week?
168 hours on the calendar. 40 on a standard U.S. work week.
Calendar week
168
7 days × 24 hours
Standard work week
40
5 days × 8 hours (U.S. FLSA)
The 168-hour budget
Everyone gets the same 168 hours per week. Here is what a typical full-time U.S. worker has already committed before discretionary time begins:
| Allocation | Hours | % of week |
|---|---|---|
| Sleep (8 hrs/night × 7) | 56 | 33.3% |
| Standard U.S. work week | 40 | 23.8% |
| Commute (avg 30 min each way × 5) | 5 | 3.0% |
| Meals (~1.5 hrs/day × 7) | 11 | 6.5% |
| Personal care (~1 hr/day × 7) | 7 | 4.2% |
| Subtotal committed | 119 | 70.8% |
| Discretionary remaining | 49 | 29.2% |
Adjust each row to your own schedule. The point isn't the exact split — it's that a 168-hour budget is finite and accounting for it makes tradeoffs visible.
The math
7 days × 24 hours = 168 hours. There's no leap-week or alternative-week to complicate the calendar week — it's the most boring and reliable interval on the page.
The 40-hour standard work week comes from the U.S. Fair Labor Standards Act, which sets 40 hours as the threshold above which non-exempt employees earn overtime (1.5×). See methodology for the full source list.
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The 4-day work week
A 4-day, 32-hour work week saves you 8 hours weekly — about 416 hours per year, equivalent to ten 40-hour work weeks reclaimed.
The largest controlled trial to date was a 2022 UK pilot of 61 companies and ~2,900 workers, run by 4 Day Week Global with Cambridge and Boston College researchers. Most participating companies kept the schedule after the trial; results are public.
Frequently asked questions
How many minutes in a week?
10,080 minutes. 604,800 seconds.
Is overtime mandatory after 40 hours?
In the U.S., the FLSA requires non-exempt employees to be paid 1.5× their regular rate for hours over 40 in a workweek. Exempt (typically salaried professional) employees can be required to work additional hours without extra pay. The EU Working Time Directive caps the average week at 48 hours.
How many work weeks in a year?
52 weeks in a calendar year (with one extra day, or two in a leap year). For salary math, 52 × 40 = 2,080 hours — see the work-year breakdown for the post-PTO figure.
Why is the work week 5 days?
A combination of the religious week (Saturday or Sunday as a day of rest) and the 1926 Ford Motor Company adoption of a Saturday-and-Sunday weekend. The U.S. FLSA codified the 40-hour week in 1938. There is no underlying biological or astronomical reason for 5 days versus 4 or 6.