Days to Weeks (d to wk) Converter and Formula
1 day equals 0.14285714 weeks — divide the number of days by 7 (or multiply by 0.14285714) to convert. A week is exactly 7 days, so one day is 1 ÷ 7 = 0.14285714 of a week. The factor is exact because a week is always 7 days.
The formula
To convert days to weeks, multiply by 0.14285714 (that is, divide by 7):
weeks = days × 0.14285714
Example: 21 × 0.14285714 = 3 weeksTo reverse it, divide weeks by 0.14285714 (or multiply by 7) to get days.
Conversion table
| Days | Weeks |
|---|---|
| 1 | 0.14285714 |
| 2 | 0.28571428 |
| 3 | 0.42857142 |
| 5 | 0.71428570 |
| 7 | 1 |
| 10 | 1.4285714 |
| 25 | 3.5714285 |
| 50 | 7.142857 |
| 100 | 14.285714 |
| 500 | 71.42857 |
| 1000 | 142.85714 |
How to convert online
- Type the number of days into the first box.
- Read the weeks value instantly in the second box.
- Or enter a week value to convert back to days — it works both ways.
Use the Day to Week Converter — free and instant in your browser.
Where this conversion is used
Days-to-weeks conversion is handy for project schedules and sprint planning, pregnancy and gestation tracking, leave and vacation accrual, delivery and lead-time estimates, and any timeline that reads more naturally in weeks. Because a week is always 7 days, the result is exact rather than an average.
FAQ
How many weeks are in a day?
One day equals 0.14285714 weeks. Multiply days by 0.14285714 — for example, 10 days = 1.4285714 weeks.
What is the formula to convert days to weeks?
weeks = days × 0.14285714, which is the same as dividing days by 7.
How do I convert weeks back to days?
Multiply weeks by 7. For example, 3 weeks × 7 = 21 days.
Is the conversion exact?
Yes. A week is defined as exactly 7 days, so the conversion is exact.
Related converters
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