Convert days to weeks
Converting days to weeks is a common time task, whether you are checking a recipe, a spec sheet, a travel distance or a homework problem. Since 1 d equals 0.142857 wk, the math is a single multiplication — and this page does it for you instantly, with the formula, a table of common values and answers to the questions people ask most.
Exact factor
How to convert days to weeks
To convert days to weeks, multiply the number of days by 0.142857. For example, 10 d × 0.142857 = 1.42857 wk.
wk = d × 0.142857
- Write down the value in days you want to convert.
- Multiply it by 0.142857 (the exact d→wk factor).
- The result is your value in weeks. Check it below with the converter or the table.
Conversion table
Common values of days and their equivalents in weeks:
| d | wk |
|---|---|
| 1 | 0.142857 |
| 2 | 0.285714 |
| 3 | 0.428571 |
| 4 | 0.571429 |
| 5 | 0.714286 |
| 10 | 1.42857 |
| 20 | 2.85714 |
| 25 | 3.57143 |
| 50 | 7.14286 |
| 100 | 14.2857 |
| 250 | 35.7143 |
| 500 | 71.4286 |
About these units
Day (d). A day equals 24 hours or 86,400 seconds, approximating one rotation of the Earth. Calendars, deadlines and project plans are built on days.
Week (wk). A week equals 7 days or 604,800 seconds. It is the standard cycle for work schedules and calendar planning, independent of month lengths.
Frequently asked questions
How do I convert days to weeks?
To convert days to weeks, multiply the number of days by 0.142857. For example, 10 d × 0.142857 = 1.42857 wk. Or skip the math: type the value into the converter at the top of this page and the result updates instantly.
How many weeks are in 1 day?
1 d = 0.142857 wk. That is the fixed relationship used by this converter and by international standards.
How many days are in 1 week?
1 wk = 7 d. If you are converting in the opposite direction, use our Week to Day converter for the dedicated table and FAQ.
Is the days to weeks conversion exact?
Yes. Both units are defined by international agreement, so the factor of 0.142857 is exact. Displayed results are rounded to 6 significant digits only for readability.
What is day used for?
A day equals 24 hours or 86,400 seconds, approximating one rotation of the Earth. Calendars, deadlines and project plans are built on days.