Weeks to Days
1 week = 7 days · 1 d = 0.14286 wk
1 week = 7 days
How it’s calculated
d = wk × 7
- Multiply the value in weeks by 7.
- To go back, divide by 7 (or multiply by 0.1428571429).
- 1 wk = 7 d · 1 d = 0.1428571429 wk
Show worked solutionFactor, unit cancellation and rounding, step by step
Find the conversion factor
By definition 1 wk = 604800 s and 1 d = 86400 s, so 1 wk = 7 d. Source: NIST SP 811 / Handbook 44; BIPM SI Brochure (9th ed.) (SI prefixes and accepted units).
Multiply by the factor written as a fraction
Put wk in the denominator so it cancels, leaving d.
Calculate (unrounded)
Round the answer
Rounded to 5 significant figures.
Answer: 7 d
1 wk in other units
Batch convert wk → d
Results
- 1 wk = 7 d
- 5 wk = 35 d
- 10 wk = 70 d
- 25 wk = 175 d
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Quick examples
- 1 week = 7 days
- 5 weeks = 35 days
- 10 weeks = 70 days
- 25 weeks = 175 days
- 100 weeks = 700 days
About these units
Week (wk)
other
1 wk = 604800 s
Source: NIST SP 811 / Handbook 44
Day (d)
SI (metric)
1 d = 86400 s
Source: BIPM SI Brochure (9th ed.) (SI prefixes and accepted units)
Weeks to days conversion table
| Weeks (wk) | Days (d) |
|---|---|
| 0.1 wk | 0.7 d |
| 0.5 wk | 3.5 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 |
| 15 wk | 105 d |
| 20 wk | 140 d |
| 25 wk | 175 d |
| 30 wk | 210 d |
| 40 wk | 280 d |
| 50 wk | 350 d |
| 75 wk | 525 d |
| 100 wk | 700 d |
| 250 wk | 1,750 d |
| 500 wk | 3,500 d |
| 1,000 wk | 7,000 d |
Related conversions
Frequently asked questions
How do I convert weeks to days?
Use d = wk × 7. Multiply the value in weeks by 7.
How many days are in 1 week?
1 week (wk) equals 7 days (d).
How many weeks are in 1 day?
1 day (d) equals 0.14286 weeks (wk); more precisely 0.1428571429.
What is 10 wk in d?
10 weeks = 70 days.
Formula: d = wk × 7. Factors last reviewed 2026-10-27.