How to convert days to weeks
To convert days to weeks, multiply the value by the conversion factor 0.1428571429. To go the other way, multiply by 7 (or divide by 0.1428571429).
Worked example: 90 d to wk
- Write the value: 90 d
- Multiply by 0.1428571429: 90 × 0.1428571429
- Result: 12.8571 wk
Day to Week conversion table
Quick reference values, rounded to 6 significant digits.
| Day (d) | Week (wk) |
|---|---|
| 0.1 d | 0.0142857 wk |
| 0.25 d | 0.0357143 wk |
| 0.5 d | 0.0714286 wk |
| 1 d | 0.142857 wk |
| 2 d | 0.285714 wk |
| 3 d | 0.428571 wk |
| 4 d | 0.571429 wk |
| 5 d | 0.714286 wk |
| 6 d | 0.857143 wk |
| 7 d | 1 wk |
| 8 d | 1.14286 wk |
| 9 d | 1.28571 wk |
| 10 d | 1.42857 wk |
| 12 d | 1.71429 wk |
| 15 d | 2.14286 wk |
| 20 d | 2.85714 wk |
| 25 d | 3.57143 wk |
| 30 d | 4.28571 wk |
| 40 d | 5.71429 wk |
| 50 d | 7.14286 wk |
| 75 d | 10.7143 wk |
| 100 d | 14.2857 wk |
| 250 d | 35.7143 wk |
| 500 d | 71.4286 wk |
| 1,000 d | 142.857 wk |
Week to Day
| wk | d |
|---|---|
| 1 wk | 7 d |
| 5 wk | 35 d |
| 10 wk | 70 d |
| 50 wk | 350 d |
| 100 wk | 700 d |
1 Day in other time units
About Day and Week
What is a day (d)?
A day equals 24 hours or 86,400 seconds.
What is a week (wk)?
A week equals 7 days.
Where day to week conversion is used
Time conversions are needed for project planning, salary and work-hour calculations, cooking timers and scientific data. Converting between days and weeks is especially common when you compare products, read foreign specifications, or fill in forms that expect a specific unit.
Need every unit at once? Use the full Time Converter.
Frequently asked questions
How many weeks are in 1 day?
1 Day equals 0.142857 wk.
How do I convert days to weeks?
Multiply the number of days by 0.1428571429. For example, 90 d × 0.1428571429 = 12.8571 wk.
What is 90 d in wk?
90 d = 12.8571 wk.
How many days are in 1 week?
1 Week equals 7 d. Use the Weeks to Days converter for the reverse direction.
Is this Day to Week converter accurate?
Yes. It uses exact internationally defined conversion factors, calculated with full floating-point precision. Results are displayed rounded for readability.