Weeks Between Dates
Weeks Between
12 weeks and 6 days
From Jan 13, 2026 to Apr 13, 2026 (90 total days)
Calculate the number of complete weeks and remaining days between any two dates.
How It Works
The calculator finds the total days between your two dates, then divides by 7 to show complete weeks plus any remaining days. For example, 23 days becomes 3 weeks and 2 days.
Breaking down date spans into weeks makes long periods easier to understand and communicate. Instead of saying "we have 45 days," it's clearer to say "about 6 and a half weeks."
This calculator does the math for you, showing both the complete weeks and any leftover days.
Weekly breakdowns are particularly useful for: - Pregnancy tracking (gestation is measured in weeks) - Academic planning (semesters, terms) - Fitness and training programs - Project sprints and agile planning - Comparing time spans to typical weekly cycles
The calculation treats every 7 days as one week, regardless of which day of the week you start counting from. This is a duration measurement, not a calendar week count.
Examples
Semester length
Input: Start: September 1, 2025 → End: December 15, 2025
Result: 15 weeks and 0 days
Training period
Input: Start: January 6, 2025 → End: March 31, 2025
Result: 12 weeks and 0 days