Online Days to weeks converter to calculate the number of weeks for the given number of days. A day is a unit of time that is equal to 24 hours. A week is also an unit of time which is exactly equal to seven days. This time unit calculation is based on the Gregorian calendar. One Day is equal to 0.1429 week approximately. You can convert the number of days to weeks, just by dividing the number of days by seven using this Days To Weeks Calculator.