Weeks Between Dates Calculator
Counts weeks between two dates.
Result
- Weeks
- 39.00 weeks
- Full weeks
- 39 weeks
How to use the weeks between dates calculator
- Enter the start date.
- Enter the end date.
- The results update as you type, or press Calculate.
- Read the weeks first, then the supporting figures below it.
Formula
Weeks = days ÷ 7.
Worked example
For example, with these inputs:
- Start date: 5 Jan 2026
- End date: 5 Oct 2026
the calculator returns:
- Weeks: 39.00 weeks
- Full weeks: 39 weeks
Background
Many Singapore rules are expressed in days: notice periods, leave entitlements, stamp duty deadlines and probation periods. Whether the count includes the start or end date, and whether weekends count, changes the answer.
The Gregorian calendar has months of 28 to 31 days and adds a leap day almost every four years, which makes counting days by hand surprisingly error-prone. Converting dates to day numbers and subtracting avoids the problem.
Frequently asked questions
How does the weeks between dates calculator work?
It applies this formula: Weeks = days ÷ 7.
Does this count Singapore public holidays?
No. It counts calendar days or weekdays. Subtract any public holidays in the period yourself.