How to convert weeks to days
Formula: d = wk × 7
Worked example: 2 wk → 2 × 7 = 14 d
Multiply weeks by 7. A 40 week pregnancy lasts 280 days, and a 6 week notice period lasts 42 days.
Weeks to days conversion chart
| Weeks (wk) | Days (d) |
|---|---|
| 1 wk | 7 d |
| 2 wk | 14 d |
| 3 wk | 21 d |
| 4 wk | 28 d |
| 5 wk | 35 d |
| 6 wk | 42 d |
| 7 wk | 49 d |
| 8 wk | 56 d |
| 9 wk | 63 d |
| 10 wk | 70 d |
| 12 wk | 84 d |
| 15 wk | 105 d |
| 20 wk | 140 d |
| 24 wk | 168 d |
| 30 wk | 210 d |
| 36 wk | 252 d |
| 45 wk | 315 d |
| 48 wk | 336 d |
| 60 wk | 420 d |
| 72 wk | 504 d |
| 90 wk | 630 d |
| 100 wk | 700 d |
| 120 wk | 840 d |
What is a week?
The week is 7 days or 168 hours. Pregnancies, payroll periods, training plans and project schedules are often counted in weeks. A year has a little over 52 weeks.
What is a day?
The day equals 24 hours or 86,400 seconds. It is the natural unit for deadlines, rentals, notice periods and medication courses. The occasional leap seconds added to official clocks are ignored here.