Use this free weeks calculator to find how many full weeks and extra days are between two dates.
How to use this weeks calculator
Select two dates and press Calculate Weeks. The result shows full weeks plus the remaining days, and the total in days.
Common uses
Track pregnancy weeks, project durations, training plans, school terms, and rental periods.
Example
From 1 January to 29 January is exactly 4 weeks.
Frequently asked questions
Does the order of dates matter?
No. The calculator always measures the period between the two dates.
How many days are in a week count?
Every 7 days count as one full week.