Weeks to Days Converter
Convert weeks to days instantly. One week equals exactly 7 days. Type in either box to convert both ways, then use the chart, worked examples and everyday sizes below.
How to convert weeks to days
Worked example: convert 64 weeks to days. Using days ← weeks × 7, we get 64 × 7 = 448 d. To check the result, convert back: 448 d ÷ 7 = 64 wk.
Weeks to days chart
| Weeks (wk) | Days (d) |
|---|---|
| 1 wk | 7 d |
| 2 wk | 14 d |
| 3 wk | 21 d |
| 4 wk | 28 d |
| 5 wk | 35 d |
| 6 wk | 42 d |
| 8 wk | 56 d |
| 10 wk | 70 d |
| 12 wk | 84 d |
| 15 wk | 105 d |
| 20 wk | 140 d |
| 25 wk | 175 d |
| 30 wk | 210 d |
| 40 wk | 280 d |
| 50 wk | 350 d |
| 75 wk | 525 d |
| 100 wk | 700 d |
| 150 wk | 1,050 d |
| 200 wk | 1,400 d |
| 250 wk | 1,750 d |
| 500 wk | 3,500 d |
| 1,000 wk | 7,000 d |
Days to weeks (reverse)
| Days (d) | Weeks (wk) |
|---|---|
| 1 d | 0.1428571 wk |
| 2 d | 0.2857143 wk |
| 5 d | 0.7142857 wk |
| 10 d | 1.428571 wk |
| 20 d | 2.857143 wk |
| 50 d | 7.142857 wk |
| 100 d | 14.28571 wk |
| 250 d | 35.71429 wk |
| 500 d | 71.42857 wk |
| 1,000 d | 142.8571 wk |
About the week and the day
A week is 7 days, or 168 hours. It is the base of work schedules, pregnancy duration (about 40 weeks) and school terms.
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.
One week is 7 times the size of one day, so it takes fewer weeks than days to express the same amount.
Everyday sizes in weeks and days
| Everyday example (approximate) | In weeks | In days |
|---|---|---|
| A lecture | 0.0049603 wk | 0.034722 d |
| A feature film | 0.011905 wk | 0.083333 d |
| A working day | 0.047619 wk | 0.33333 d |
| A long-haul flight | 0.059524 wk | 0.41667 d |
| A work week | 0.2381 wk | 1.6667 d |
| A school year of 180 days | 25.714 wk | 180 d |
Weeks to days FAQ
How many days are in one week?
One week equals exactly 7 days. In the other direction, one day equals 0.14285714 weeks.
How do I convert weeks to days without a calculator?
convert 64 weeks to days. Using days ← weeks × 7, we get 64 × 7 = 448 d. To check the result, convert back: 448 d ÷ 7 = 64 wk. For a quick estimate, round the factor to 7. Then 64 wk is about 448 d, compared with the exact 448 d (an error of 0%). That is close enough for planning, but use the calculator above when the number matters.
What is a lecture in days?
A lecture is about 0.0049603 weeks, which is 0.034722 days. Treat that as an approximate everyday figure rather than an official measurement.
Are the weeks and days the same in every country?
A week is exactly 7 days (604,800 seconds). A civil day is 86,400 seconds (24 hours); daylight-saving changes make some local days 23 or 25 hours long.