How many hours is 1 week?
168 hours
1 week = 168 hours — 7 days on a clock.
hours
168hr
1 wk = 168 hr
Quick pairs
How 1 week converts to hours
Every time conversion goes through the second, which is the SI base unit for time. 1 week is 604,800 seconds, and dividing that by the length of one hour gives the answer.
1 week = 168 hours 1 × 168 = 168
Written as a clock reading rather than a decimal, that is 7 days. The decimal form is what a form field or a spreadsheet wants; the clock form is what a schedule wants, and the two are not interchangeable.
Where 1 week shows up
One hundred sixty-eight hours, and it is a genuinely fixed number. Unlike the month or the year, the week never varies, so 168 needs no averaging and carries no caveat. The one exception is local rather than universal: a week containing a daylight saving transition runs 167 or 169 hours on a wall clock while the elapsed time is still 168. Anything scheduling across that boundary, from payroll to backup windows, has to decide which of the two it means.
1 week in every time unit
The same span, converted once into each unit the tool supports. The last two rows use the Gregorian average.
| Unit | Amount | Basis |
|---|---|---|
| milliseconds | 604,800,000 | Exact definition |
| seconds | 604,800 | Exact definition |
| minutes | 10,080 | Exact definition |
| hours | 168 | Exact definition |
| days | 7 | Exact definition |
| weeks | 1 | Exact definition |
| months | 0.23 | Gregorian average |
| years | 0.01917 | Gregorian average |
Frequently asked questions
How many hours is 1 week?
1 week = 168 hours. 1 week = 168 hours, so the conversion is 1 × 168 = 168. That is exact arithmetic — both units have a fixed definition, so there is no rounding beyond the digits shown.
How long is 1 week on a clock?
7 days. That is the same span written out in whole units instead of a decimal, which is usually what you want when you are setting a timer or reading a schedule rather than filling in a form.
Is this conversion exact?
Yes. Seconds, minutes, hours, days, and weeks all have fixed definitions — 60 seconds to the minute, 60 minutes to the hour, 24 hours to the day, 7 days to the week. Nothing in this conversion touches a month or a year, so no averaging is involved and the only rounding is in the digits displayed.
What is 1 week in practice?
One hundred sixty-eight hours, and it is a genuinely fixed number. Unlike the month or the year, the week never varies, so 168 needs no averaging and carries no caveat. The one exception is local rather than universal: a week containing a daylight saving transition runs 167 or 169 hours on a wall clock while the elapsed time is still 168. Anything scheduling across that boundary, from payroll to backup windows, has to decide which of the two it means.
Related time conversions
Any value, any two units
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