Add Weeks to Date
What date is N weeks from now?
Weeks are the easy case — always seven days, always the same weekday. Add them and get the date, the weekday and the week number.
Questions people ask
The things that come up about add weeks to dates, answered plainly.
Will the weekday be the same?
Always. A week is exactly seven days with no exceptions, so adding whole weeks never changes which day of the week you land on.
How many weeks is a pregnancy?
Forty from the last menstrual period, which is 280 days. Adding 40 weeks to that date gives the estimated due date most clinics use.
Related tools
Move a date forwards or backwards by a span, with the calendar's rules applied.
Add Days to DateAdd any number of days to a date and get the answer with its weekday, plus the same date counted in working days for anything with a deadline attached.
Subtract WeeksWhole weeks taken off a date — the weekday is guaranteed to be the same, which makes this the safest way to step backwards.
Week Number CalculatorThe ISO week for any date, the US week beside it, the Monday-to-Sunday dates the week covers, and how many weeks the year has.
Future Date CalculatorCount forward from today by any span and get the date, its weekday, its week number, and how many working days away it is.