How to convert weeks to days
Every week is 7 days, so the conversion is a single multiplication:
Worked example: 25 wk → 25 × 7 = 175 d.
Quick mental estimate: Multiply by 7: 25 × 7 ≈ 175 d (exact: 175).
Weeks to days conversion table
| Weeks (wk) | Days (d) |
|---|---|
| 1 wk | 7 d |
| 2 wk | 14 d |
| 3 wk | 21 d |
| 5 wk | 35 d |
| 10 wk | 70 d |
| 15 wk | 105 d |
| 20 wk | 140 d |
| 25 wk | 175 d |
| 50 wk | 350 d |
| 75 wk | 525 d |
| 100 wk | 700 d |
| 200 wk | 1,400 d |
| 250 wk | 1,750 d |
| 500 wk | 3,500 d |
| 1,000 wk | 7,000 d |
Values rounded to four decimals. For a value that is not in the table, use the converter above — it accepts decimals and negative numbers.
When you need this conversion
- Project planning and deadlines, where a duration given in one unit has to be turned into the granularity your schedule uses.
- Billing and payroll: hours worked converted into days, or a rate quoted per unit of time.
- Cooking, exercise, media durations and any timer set from a figure written in another unit.
Getting it right
The arithmetic is a single multiplication, so mistakes almost never come from the calculation itself — they come from the value that goes into it. Check that the figure you are converting really is in weeks and not in a neighbouring unit, and that you have not already converted it once.
Sanity-check the direction of the result before you use it. One week is 7 days, so converting weeks to days should make the number larger. If it moved the other way, the conversion was applied backwards — the reverse converter is one click away.
About the units
Week (wk)
The week is 7 days. Schedules, pregnancy, payroll and project plans are counted in weeks.
Day (d)
The day is 24 hours, or 86 400 seconds. Deadlines, rentals, leave and interest are counted in days.
Frequently asked questions
How many days are in 1 week?
1 week equals 7 days. To convert any value, multiply the number of weeks by 7.
How do I convert weeks to days in my head?
Multiply by 7: 25 × 7 ≈ 175 d (exact: 175).
Is the wk to d conversion exact?
The factor is a standard rounded value; for most purposes four significant figures are more than enough.
How do I convert weeks to days in Excel or Google Sheets?
Put the value in A1 and use =A1*7. Multiplying by the factor works in every spreadsheet, in any programming language, and on a basic calculator.
How many decimal places should I keep?
For everyday use two decimals are plenty. Keep four if the result feeds another calculation, and round only at the very end — rounding intermediate steps is the most common reason a result comes out slightly wrong.