Days to Weeks Converter

The converter above is already set to days and weeks, so you only need to enter your number. The result updates as you type, and nothing is sent anywhere.

1. Type your value in the Value box, for example 100. Decimals and negative numbers are accepted.
2. Check that From shows days and To shows weeks. Both menus can be changed if you need a different pair.
3. Read the answer in the large result box. The note under it shows the exact factor used for one day.
4. Press Copy result to put the answer on your clipboard, or Swap units to convert in the opposite direction.
5. Look at In every unit on the right to see the same amount in all the other time units.

One day is about 0.142857 weeks, so the formula is weeks = days x 0.142857. Going the other way, one week is exactly 7 days. A day in this converter is 24 hours, although calendar days around daylight saving changes can be 23 or 25 hours long. A week is 7 days, which is 168 hours.

Worked examples with the same factor:

• 100 days: 100 x 0.142857 = 14.2857 weeks
• 250 days: 250 x 0.142857 = 35.7143 weeks
• 1,000 days: 1,000 x 0.142857 = 142.857 weeks

Divide by 7: 100 days is about 14.3 weeks, which is 14 weeks and 2 days.

To check the converter by hand, take 250 days and apply the rule once: the result should be 35.7143 weeks. If you go back again with the reverse factor 7 you land on 250 days, which confirms that the two directions agree. Rounding the factor to fewer digits for mental math gives a result that is close but not identical, so use the tool when the last digits matter.

These reference values come from the same factor the converter uses, so they match what you see above. Use the table for common amounts, and the converter for anything else.

Seconds, minutes, hours and days are linked by fixed factors of 60 and 24, so these conversions are exact. The complications come from calendars, not clocks: months have different lengths, years have leap days, and daylight saving time makes some days 23 or 25 hours long. For those cases a date calculator is the better tool, because it follows the real calendar instead of an average. Payroll software, shift planners and project tools often store durations as decimal hours, so people convert in both directions several times a week.

Use the table as a sanity check rather than a substitute for the converter. A half hour is 30 minutes, a quarter of an hour is 15, and a decimal hour of 0.1 is 6 minutes. When you read a timesheet, remember that decimal hours and clock time look similar but are not the same: 7.5 hours is 7 hours 30 minutes, not 7 hours 50 minutes.

Deadlines, subscriptions, trial periods and return windows quoted in days are easier to plan in weeks.

A day is 24 hours in this converter, but real calendar days change length around daylight saving time, and months and years are not fixed. For dates, use a date calculator rather than multiplying.

Related pages: Weeks to Days Converter for the reverse direction, and the days to hours and hours to minutes pages. For other time units use the time converter.

The page keeps no history, so each visit starts again from the defaults, 100 days. Your numbers are processed by JavaScript in your own browser and are never sent to a server, which makes the converter safe for private figures such as medical, financial or work measurements.