Weeks Between Dates
Calculate the number of full weeks and remaining days between any two dates.
Results
Counting weeks between two dates is essential for pregnancy tracking (40-week term), agile sprint planning (2-week cycles), training programs and school term calculations. Enter your dates and get an exact breakdown of full weeks plus any remaining days, along with decimal weeks for more precise planning.
Explore all our date difference calculator tools, or browse the full time and date converters & calculators.
Frequently asked questions
Enter both dates and the calculator divides the total days by 7 to give full weeks plus remaining days. For example, 45 days equals 6 weeks and 3 days.
A full-term pregnancy is approximately 40 weeks (280 days) from the first day of the last menstrual period. Enter your due date or LMP date to track your progress in weeks.
A typical US school year runs about 36 weeks (180 school days). UK terms total around 39 weeks. Enter the first and last day of term to get the exact count.
Most agile teams use 2-week sprints. Enter your sprint start and project deadline to calculate how many complete sprints fit in your timeline. A 3-month project gives about 6-7 two-week sprints.
Calendar weeks start on Sunday in the US and Monday in most other countries (ISO standard). The total count between two dates is the same - only the week boundary day differs. Our Week Number Calculator shows ISO week numbers.