Convert weeks to days
Enter a value in weeks to convert it to days.
weeks to days reference
| weeks | days |
|---|---|
| 1 wk | 7 d |
| 2 wk | 14 d |
| 5 wk | 35 d |
| 10 wk | 70 d |
| 25 wk | 175 d |
| 50 wk | 350 d |
| 100 wk | 700 d |
The conversion factor
One week is 7 days. So to convert, multiply your figure in weeks by 7. To go the other way, multiply days by 0.14285714, or use the days to weeks converter.
Doing it in your head
For a quick estimate, round the factor: roughly "times 7". Use the exact converter above when the number matters.
Where this conversion comes up
Durations in code and spreadsheets, timeouts, and project estimates.
See the common unit conversions cheat sheet for the factors worth memorising.
Related tools
Frequently asked questions
How many days are in a week?
1 week = 7 days.
What is the formula to convert weeks to days?
Multiply the number of weeks by 7. To go back the other way, multiply days by 0.14285714.
What is 10 weeks in days?
10 weeks = 70 days. The reference table below lists more common values.
Is this converter accurate?
It uses the internationally defined conversion factors and computes at full floating-point precision, then rounds only the displayed result. For everyday purposes it is exact; for legal, engineering or scientific work, confirm the required number of significant figures.
Does it work offline?
Yes. The conversion runs in your browser with no server call, so it keeps working with no connection, and nothing you enter is uploaded.
Last reviewed: September 2026. Figures and formulas are checked against their published sources; see the site's data notes.