A week is defined as exactly 168 hours (24 hours times 7 days) — a simple, fixed time conversion.
How it works
Dividing hours by 168 gives weeks; multiplying weeks by 168 gives hours back. Type into either field and the other updates instantly.
What this does not include
This does not include days as an intermediate unit — for that, use this site’s hours-to-days or days-to-weeks calculators instead.
How to use this calculator
- Enter a value in either hours or weeks — the other field fills in automatically.
Frequently asked questions
Why is a week exactly 168 hours?
It’s the product of 24 hours per day and 7 days per week, a long-standing fixed relationship in timekeeping.
Where is this conversion most commonly needed?
Project timelines, work-hour totals, and comparing durations quoted in different units.
Can this handle fractional weeks?
Yes — entering 84 hours converts to exactly 0.5 weeks, and any fractional value works the same way in both directions.
