Time converter
Days to Weeks
If you need to know how many Weeks one Days contains, the answer is 0.14285714. The conversion is linear, so 10 d is 1.428571 wk and 100 d is 14.285714 wk. Use the converter for any other value.
Formula 1 d = 0.14285714 wk
Need the other direction? Weeks to Days.
How to convert Days to Weeks
A day is 24 hours, or 86,400 seconds, ignoring leap seconds. A week is exactly seven days, or 604,800 seconds.
To convert Days to Weeks, multiply the value in d by 0.14285714. For example, 10 d × 0.14285714 = 1.428571 wk. This works because the ratio between the two units is constant for every value in time.
Worked examples
| d | wk |
|---|---|
| 1 d | 0.14285714 wk |
| 2.5 d | 0.35714286 wk |
| 5 d | 0.71428571 wk |
| 10 d | 1.428571 wk |
| 25 d | 3.571429 wk |
| 50 d | 7.142857 wk |
| 100 d | 14.285714 wk |
Reverse conversion
| wk | d |
|---|---|
| 1 wk | 7 d |
| 5 wk | 35 d |
| 10 wk | 70 d |
| 25 wk | 175 d |
| 50 wk | 350 d |
| 100 wk | 700 d |
When this conversion is useful
This is the calculation you need when you are planning a project, a sprint or a schedule and need consistent units. Because the factor is fixed, you can use the same number for a single measurement or for a batch: 1,000 d is 142.857143 wk.
Is the conversion exact?
Seconds, minutes, hours, days and weeks are exact. Months and years here use average Julian values (30.4375 days and 365.25 days), so a calendar conversion can differ slightly.
Reference: BIPM SI Brochure and NIST SP 811. Last reviewed: 2026-11-01.
d to wk conversion chart
The chart lists the most requested values. For a value that is not here, use the converter at the top of the page.
| Days (d) | Weeks (wk) |
|---|---|
| 1 d | 0.14285714 wk |
| 2 d | 0.28571429 wk |
| 3 d | 0.42857143 wk |
| 4 d | 0.57142857 wk |
| 5 d | 0.71428571 wk |
| 6 d | 0.85714286 wk |
| 7 d | 1 wk |
| 8 d | 1.142857 wk |
| 9 d | 1.285714 wk |
| 10 d | 1.428571 wk |
| 11 d | 1.571429 wk |
| 12 d | 1.714286 wk |
| 13 d | 1.857143 wk |
| 14 d | 2 wk |
| 15 d | 2.142857 wk |
| 16 d | 2.285714 wk |
| 17 d | 2.428571 wk |
| 18 d | 2.571429 wk |
| 19 d | 2.714286 wk |
| 20 d | 2.857143 wk |
| 21 d | 3 wk |
| 22 d | 3.142857 wk |
| 23 d | 3.285714 wk |
| 24 d | 3.428571 wk |
| 25 d | 3.571429 wk |
| 26 d | 3.714286 wk |
| 27 d | 3.857143 wk |
| 28 d | 4 wk |
| 29 d | 4.142857 wk |
| 30 d | 4.285714 wk |
| 31 d | 4.428571 wk |
| 32 d | 4.571429 wk |
| 33 d | 4.714286 wk |
| 34 d | 4.857143 wk |
| 35 d | 5 wk |
| 36 d | 5.142857 wk |
| 37 d | 5.285714 wk |
| 38 d | 5.428571 wk |
| 39 d | 5.571429 wk |
| 40 d | 5.714286 wk |
| 41 d | 5.857143 wk |
| 42 d | 6 wk |
| 43 d | 6.142857 wk |
| 44 d | 6.285714 wk |
| 45 d | 6.428571 wk |
| 46 d | 6.571429 wk |
| 47 d | 6.714286 wk |
| 48 d | 6.857143 wk |
| 49 d | 7 wk |
| 50 d | 7.142857 wk |
| 60 d | 8.571429 wk |
| 70 d | 10 wk |
| 80 d | 11.428571 wk |
| 90 d | 12.857143 wk |
| 100 d | 14.285714 wk |
Frequently asked questions
How many Weeks are in 1 Days?
1 d equals 0.14285714 wk.
How do I convert Days to Weeks?
Multiply the d value by 0.14285714. Example: 25 d = 3.571429 wk.
What is 2.5 d in wk?
2.5 d = 0.35714286 wk.
Is the d to wk conversion exact?
Seconds, minutes, hours, days and weeks are exact. Months and years here use average Julian values (30.4375 days and 365.25 days), so a calendar conversion can differ slightly.
Does the calculator work offline?
Yes. The conversion runs in your browser with JavaScript, so it works after the page has loaded, even without a connection.