Weeks Between Dates
How many weeks between two dates?
Whole weeks and the days left over, plus the exact decimal — a week is the one calendar unit with a fixed length, so this answer is never approximate.
Questions people ask
The things that come up about weeks between datess, answered plainly.
Is a week always seven days?
Yes — unlike a month or a year, a week has no exceptions, so a week count is exact. The only wrinkle is that a week containing a daylight-saving change is 167 or 169 hours rather than 168.
How many weeks is a pregnancy, a term or a quarter?
Enter the two dates. For reference: a 40-week pregnancy is 280 days, a UK school term runs 12–14 weeks, and a calendar quarter is about 13 weeks.
Related tools
How far apart two instants are — in whichever unit you need, counting every day or only the working ones.
Days Between DatesA plain day count, with the weekday split beside it and the inclusive answer stated too — because half the time "days between" means one more than subtraction gives.
Months Between DatesWhole calendar months and the days left over — worked out by walking the calendar, so the answer matches what a lease, a loan schedule or a notice period means by "a month".
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.
Date Difference CalculatorEnter two dates and get the gap in every unit at once — years, months and days as a person would say it, and the exact total in weeks, hours, minutes and seconds underneath.