Days to Weeks Converter
Convert days to weeks instantly. One day equals exactly 0.1428571 weeks. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert days to weeks
Worked example: convert 250 days to weeks. Using weeks ← days ÷ 7, we get 250 × 0.1428571429 = 35.714286 wk. To check the result, convert back: 35.714286 wk ÷ 0.1428571429 = 250 d.
Days to weeks chart
| Days (d) | Weeks (wk) |
|---|---|
| 1 d | 0.1428571 wk |
| 2 d | 0.2857143 wk |
| 3 d | 0.4285714 wk |
| 4 d | 0.5714286 wk |
| 5 d | 0.7142857 wk |
| 6 d | 0.8571429 wk |
| 8 d | 1.142857 wk |
| 10 d | 1.428571 wk |
| 12 d | 1.714286 wk |
| 15 d | 2.142857 wk |
| 20 d | 2.857143 wk |
| 25 d | 3.571429 wk |
| 30 d | 4.285714 wk |
| 40 d | 5.714286 wk |
| 50 d | 7.142857 wk |
| 75 d | 10.71429 wk |
| 100 d | 14.28571 wk |
| 150 d | 21.42857 wk |
| 200 d | 28.57143 wk |
| 250 d | 35.71429 wk |
| 500 d | 71.42857 wk |
| 1,000 d | 142.8571 wk |
Weeks to days (reverse)
| Weeks (wk) | Days (d) |
|---|---|
| 1 wk | 7 d |
| 2 wk | 14 d |
| 5 wk | 35 d |
| 10 wk | 70 d |
| 20 wk | 140 d |
| 50 wk | 350 d |
| 100 wk | 700 d |
| 250 wk | 1,750 d |
| 500 wk | 3,500 d |
| 1,000 wk | 7,000 d |
About the day and the week
A day is 24 hours, or 86,400 seconds. A solar day varies slightly, but civil time defines the day as exactly 86,400 seconds.
A week is 7 days, or 168 hours. It is the base of work schedules, pregnancy duration (about 40 weeks) and school terms.
One week equals 7 days, which makes the week the longer unit of the two.
Everyday sizes in days and weeks
| Everyday example (approximate) | In days | In weeks |
|---|---|---|
| A lecture | 0.034722 d | 0.0049603 wk |
| A feature film | 0.083333 d | 0.011905 wk |
| A working day | 0.33333 d | 0.047619 wk |
| A long-haul flight | 0.41667 d | 0.059524 wk |
| A work week | 1.6667 d | 0.2381 wk |
| A school year of 180 days | 180 d | 25.714 wk |
Days to weeks FAQ
How many weeks are in one day?
One day equals exactly 0.1428571429 weeks. In the other direction, one week equals 7 days.
How do I convert days to weeks without a calculator?
convert 250 days to weeks. Using weeks ← days ÷ 7, we get 250 × 0.1428571429 = 35.714286 wk. To check the result, convert back: 35.714286 wk ÷ 0.1428571429 = 250 d. For a quick estimate, round the factor to 0.14. Then 250 d is about 35 wk, compared with the exact 35.7143 wk (an error of 2%). That is close enough for planning, but use the calculator above when the number matters.
What is a long-haul flight in weeks?
A long-haul flight is about 0.41667 days, which is 0.059524 weeks. Treat that as an approximate everyday figure rather than an official measurement.
Are the days and weeks the same in every country?
A civil day is 86,400 seconds (24 hours); daylight-saving changes make some local days 23 or 25 hours long. A week is exactly 7 days (604,800 seconds).