Days to Weeks Converter
Enter the time in days below to convert it to weeks.
Convert Days to Weeks
Enter a value in days (d) to convert to weeks (wk).
Day to Week Conversion Table
Table showing various day measurements converted to weeks. Click any preset value or arrow to load it into the converter.
| Days (d) | Weeks (wk) |
|---|---|
| 1 d | 0.1428571 wk |
| 2 d | 0.2857143 wk |
| 5 d | 0.7142857 wk |
| 10 d | 1.4285714 wk |
| 15 d | 2.1428571 wk |
| 20 d | 2.8571429 wk |
| 25 d | 3.5714286 wk |
| 30 d | 4.2857143 wk |
| 50 d | 7.1428571 wk |
| 60 d | 8.5714286 wk |
How to Convert Days to Weeks
To convert days to weeks, multiply the time by the following conversion ratio: 0.1428571 weeks/day.
Since one day is equal to 0.1428571 weeks, you can use this simple formula to convert:
The time in weeks is equal to the time in days multiplied by 0.1428571.
For example, here's how to convert 30 days to weeks using the formula above.
How Many Weeks Are in a Day?
There are 0.1428571 weeks in a day, which is why we use this value in the formula above.
Our day to week calculator automatically converts your time measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Days and weeks are both units used to measure time. Keep reading to learn more about each unit.
What Is a Day?
A day is a unit of time equal to 86,400 seconds (s), the base unit for time. Civil day equal to 24 hours or 86,400 seconds. [1]
The day is classified as a standard unit of time. Days can be abbreviated as d; for example, 1 day can be written as 1 d.
When working with days (d) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, days (d) are widely used across large-scale industrial, bulk, and macro-level time specifications within international standard workflows, engineering documentation, and technical data sheets.
What Is a Week?
A week is a unit of time equal to 604,800 seconds (s), the base unit for time. Equal to 7 days or 168 hours. [2]
The week is classified as a standard unit of time. Weeks can be abbreviated as wk; for example, 1 week can be written as 1 wk.
When working with weeks (wk) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, weeks (wk) are widely used across large-scale industrial, bulk, and macro-level time specifications within international standard workflows, engineering documentation, and technical data sheets.
When converting time between days (d) and weeks (wk), keep full floating-point precision (1 d = 0.1428571 wk; 1 wk = 7 d) during intermediate calculations and round only the final week figure to match your instrument tolerance.
More Day & Week Conversions
Need to calculate in the opposite direction? Use our weeks to days converter (wk to d) to switch your starting unit immediately. You can also explore related tools such as converting days to hours, converting days to years, or converting seconds to minutes.
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Time)·Time Metrology Standard — Days (d) to Weeks (wk)
- [2]BIPM SpecificationBIPM (SI Base Unit: Second (s))·Unit Specifications: Day (d) & Week (wk)
- [3]NIST CUU ReferenceNIST CUU (Non-SI Units Accepted for Use (min, h, d))·Conversion Factors & Mathematical Basis (d to wk)