Convert Weeks to Days
Weeks to days is the conversion you reach for when a timeline given in weeks needs to be counted out in individual days — for planning, deadlines, or scheduling. One week is exactly 7 days, so the number gets bigger when you switch from weeks to days.
Weeks to Days conversion table
| Weeks (wk) | Days (d) |
|---|---|
| 1 | 7 |
| 2 | 14 |
| 3 | 21 |
| 5 | 35 |
| 10 | 70 |
| 20 | 140 |
| 50 | 350 |
| 100 | 700 |
| 500 | 3,500 |
| 1,000 | 7,000 |
The formula
To convert weeks to days, multiply the number of weeks by 7:
days = weeks × 7
A worked example
Say you want to convert 3 weeks into days:
3 × 7 = 21 days
That's the exact day count for a three-week timeline, useful when a deadline or shipping estimate quoted in weeks needs to be turned into a specific number of days.
Why the number is exact
A week is defined as exactly 7 days by calendar convention, not by measurement. So multiplying the number of weeks by 7 always produces an exact, whole number of days, with nothing to round.
When you'll use it
Turning project timelines or delivery windows quoted in weeks into a day count, calculating exact due dates, and comparing durations quoted in weeks against ones quoted in days.
Frequently asked questions
How many days are in a week?
Exactly 7 days. This is a fixed calendar definition, not a rounded or approximate figure.
Is the weeks to days conversion exact?
Yes. A week is defined as exactly 7 days, so multiplying the number of weeks by 7 always gives an exact, whole number of days.
When do I need to convert weeks into days?
It's common when turning a project timeline or delivery estimate quoted in weeks into a specific day count, or when counting down to a deadline that's a certain number of weeks away.