3 weeks to days
3 weeks = 21 days
Rounded to a practical precision: 21 d.
How the calculation works
One week is 7 days, so:
3 wk × 7 = 21 dReversing it, 21 days ÷ 7 returns 3 weeks.
Nearby values
| Weeks | Days |
|---|---|
| 1 wk | 7 d |
| 1.5 wk | 10.5 d |
| 2 wk | 14 d |
| 2.5 wk | 17.5 d |
| 3 wk | 21 d |
| 3.5 wk | 24.5 d |
| 4 wk | 28 d |
| 4.5 wk | 31.5 d |
| 5 wk | 35 d |
About these units
Week (wk) — A week is seven days, or 604,800 seconds.
Day (d) — A day is exactly 86,400 seconds by convention, ignoring leap seconds and slight variations in Earth’s rotation.
Frequently asked questions
How many days is 3 weeks?
3 weeks is 21 days.
How do I convert weeks to days myself?
Multiply by 7. To go back, divide by 7 — or multiply by 0.142857.
Is this figure exact?
The conversion factor between the week and the day is fixed by definition. The figure above is rounded for readability; the converter carries full precision.
Convert other values
- 1 weeks to days
- 2 weeks to days
- 3 weeks to days
- 4 weeks to days
- 5 weeks to days
- 6 weeks to days
- 8 weeks to days
- 10 weeks to days
- 12 weeks to days
- 15 weeks to days
- 20 weeks to days
- 24 weeks to days
- 30 weeks to days
- 36 weeks to days
- 40 weeks to days
- 45 weeks to days
- 48 weeks to days
- 50 weeks to days
- 60 weeks to days
- 72 weeks to days
- 90 weeks to days
- 100 weeks to days
- 120 weeks to days
- 150 weeks to days
- 180 weeks to days
- 240 weeks to days
- 300 weeks to days
- 360 weeks to days
- 480 weeks to days
- 500 weeks to days
- 600 weeks to days
- 720 weeks to days
- 1,000 weeks to days
- 1,440 weeks to days