Weeks Between Dates Calculator
Last updated: November 5, 2026
Calculate total weeks, full weeks and remaining days between two calendar dates.
Total weeks between dates
—
- Total calendar days: —
- Full weeks: —
- Remaining days after full weeks: —
- Date order: —
On this page
Quick summary: Calculate total weeks, full weeks and remaining days between two calendar dates.
Read the complete guide
Updated reference sections in this guide are in English.
What this calculator estimates
Calculate total weeks, full weeks and remaining days between two calendar dates.
How to use it
Enter Start year; Start month; Start day; End year; End month; End day. Select Calculate to update the results.
How the calculation works
The calculator divides the absolute UTC calendar-day difference by seven.
Worked example: starting scenario
| Start year | 2026 |
|---|---|
| Start month | 1 |
| Start day | 1 |
| End year | 2026 |
| End month | 7 |
| End day | 25 |
| Total weeks between dates | 29.28571429 |
|---|---|
| Total calendar days | 205 days |
| Full weeks | 29 weeks |
| Remaining days after full weeks | 2 days |
| Date order | End date is later |
Important limitations
The result counts calendar days and does not account for partial times of day.
Elapsed weeks exclude the starting instant
Seven elapsed days equal one full week. A nine-day interval gives one full week and two remaining days; it does not become ten days by counting both printed dates. The start/end ordering output tells which date comes first. These are calendar weeks of seven days, not ISO week numbers or counts of working weeks.