Weeks to Days Converter
Enter the time in weeks below to convert it to days.
Convert Weeks to Days
Enter a value in weeks (wk) to convert to days (d).
Week to Day Conversion Table
Table showing various week measurements converted to days. Click any preset value or arrow to load it into the converter.
How to Convert Weeks to Days
To convert weeks to days, multiply the time by the following conversion ratio: 7 days/week.
Since one week is equal to 7 days, you can use this simple formula to convert:
The time in days is equal to the time in weeks multiplied by 7.
For example, here's how to convert 52 weeks to days using the formula above.
How Many Days Are in a Week?
There are 7 days in a week, which is why we use this value in the formula above.
Our week to day calculator automatically converts your time measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Weeks and days are both units used to measure time. Keep reading to learn more about each unit.
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. [1]
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.
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. [2]
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.
When converting time between weeks (wk) and days (d), keep full floating-point precision (1 wk = 7 d; 1 d = 0.1428571 wk) during intermediate calculations and round only the final day figure to match your instrument tolerance.
More Week & Day Conversions
Need to calculate in the opposite direction? Use our days to weeks converter (d to wk) to switch your starting unit immediately. You can also explore related tools such as converting hours to days, converting seconds to days, or converting seconds to minutes.
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Time)·Time Metrology Standard — Weeks (wk) to Days (d)
- [2]BIPM SpecificationBIPM (SI Base Unit: Second (s))·Unit Specifications: Week (wk) & Day (d)
- [3]NIST CUU ReferenceNIST CUU (Non-SI Units Accepted for Use (min, h, d))·Conversion Factors & Mathematical Basis (wk to d)