What this calculator does
How many hours in a week has one fixed answer: 168, since a week is always exactly 7 days and a day is always exactly 24 hours. This calculator converts hours to weeks by dividing by 168, or weeks to hours by multiplying by 168, for any duration, not just a single week.
It is useful for comparing a weekly total, such as hours worked, screen time or exercise time, against a duration tracked in hours, or for working out how many weeks a large hour total, such as a project estimate, actually spans.
The formula
A week is fixed at 7 days, and a day at 24 hours, so a week is always exactly 168 hours (7 × 24). To convert hours to weeks, divide by 168. To convert weeks to hours, multiply by 168.
| Term | Meaning |
|---|---|
| Hour | A unit of time equal to 60 minutes. |
| Week | A fixed period of exactly 7 days, or 168 hours. |
| 168 | The fixed number of hours in one week: 7 days × 24 hours per day. |
The inputs explained
| Field | What to enter |
|---|---|
| Value | The value to convert. |
| Convert | Choose whether to convert weeks to hours, or hours to weeks. |
When to use it
Answering how many hours in a week
The plain question, how many hours are in a week, has one exact answer, 168, which this calculator returns directly and also scales to any number of weeks.
Converting a large hour total into weeks
A cumulative hour total, such as a project estimate or a total logged across a long timesheet, converts to weeks to give a sense of scale that a raw hour figure does not.
Comparing weekly hour budgets
A weekly time budget, such as a maximum working-hours guideline or a training plan stated in hours per week, converts to a total hour figure across several weeks to check it against a longer-term total.
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
Weeks to hours, at common durations
A range of week values, each converted to hours.
| Weeks | Hours | In days |
|---|---|---|
| 1 | 168.00 | 7.0 days |
| 2 | 336.00 | 14.0 days |
| 4 | 672.00 | 28.0 days |
| 12 | 2,016.00 | 84.0 days |
| 26 | 4,368.00 | 182.0 days |
| 52 | 8,736.00 | 364.0 days |
Hours to weeks, at common large totals
A range of hour totals, each converted to weeks.
| Hours | Weeks | In days |
|---|---|---|
| 40 | 0.2381 | 1.7 days |
| 168 | 1.000 | 7.0 days |
| 500 | 2.976 | 20.8 days |
| 1000 | 5.952 | 41.7 days |
| 2000 | 11.905 | 83.3 days |
| 8760 | 52.143 | 365.0 days |
Questions
How many hours in a week?
168 hours, always, since a week is fixed at 7 days and a day at 24 hours: 7 × 24 = 168.
How many hours in 2 weeks?
336 hours: 2 × 168.
Does 168 hours in a week ever change?
No. Unlike a month, which varies from 28 to 31 days, a week is always exactly 7 days, so the number of hours in a week never changes.
How many weeks is 1000 hours?
About 5.95 weeks, using 1000 ÷ 168.
For hours to days specifically, see the hours to days calculator. For the full time unit ladder, seconds up to decades, see the time converter.