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Time
Weeks to Days
Convert weeks (wk) to days (day). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 wk = 7 day
Weeks to Days Conversion Table
Common values, ready to copy:
| weeks | days |
|---|---|
| 1 wk | 7 day |
| 2 wk | 14 day |
| 5 wk | 35 day |
| 10 wk | 70 day |
| 25 wk | 175 day |
| 50 wk | 350 day |
| 100 wk | 700 day |
| 1,000 wk | 7000 day |
Formula
days = weeks × 7
Time uses fixed SI seconds. A day is exactly 86,400 seconds; a year (Julian) is 365.25 days = 31,557,600 seconds.
About Weeks and Days
Weeks (wk): Seven days, an ancient convention with no astronomical basis (unlike the day, month, and year); standardized across most cultures despite no natural cause for the seven-day cycle. Common uses: Work cycles, paychecks, school schedules, and project planning in the 1-3 month range.
Days (day): 86,400 seconds exactly; corresponds approximately to one rotation of Earth on its axis (about 23 hours 56 minutes of sidereal time, with extra solar adjustment). Common uses: Calendar planning, weather forecasts, project timelines, and time periods longer than a few hours.
How the conversion works
Time uses fixed SI seconds. A day is exactly 86,400 seconds; a year (Julian) is 365.25 days = 31,557,600 seconds.
The exact relationship is days = weeks × 7, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between weeks and days comes up wherever time measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.