Convert weeks to days instantly. Type a value below to see the result, or press Swap direction to convert days back to weeks. The tool uses the exact conversion factor, and a quick-reference table is below.
Days
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Conversion formula
Days = weeks × 7
Multiply by 7. A pregnancy of 40 weeks is 280 days, and a year is 52 weeks plus a day.
Quick reference table
| Weeks (wk) | Days (d) |
|---|---|
| 1 wk | 7 d |
| 2 wk | 14 d |
| 4 wk | 28 d |
| 6 wk | 42 d |
| 8 wk | 56 d |
| 10 wk | 70 d |
| 12 wk | 84 d |
| 26 wk | 182 d |
| 40 wk | 280 d |
| 52 wk | 364 d |
Frequently asked questions
How do I convert weeks to days?
Days = weeks × 7
How do I convert days back to weeks?
Use the reverse formula, or press Swap direction in the converter above. You can also use our reverse converter.
How many days is 6 weeks?
6 weeks is 42 days.
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Conversions use standard factors. Check critical measurements.