Weeks Between Dates Calculator
Find out exactly how many weeks (and leftover days) are between two dates. Results update instantly — nothing is uploaded or saved.
How this calculator works
This tool counts the total calendar days between your two dates (using DST-safe UTC date math) and divides by 7 to give you both a whole-weeks-plus-days breakdown and a precise decimal figure. Unlike most generic "days between dates" tools, weeks get their own dedicated, uncluttered result here instead of being buried in a single line of output.
Common uses
A weeks-between-dates calculator is handy for tracking pregnancy progress week-by-week, planning training or workout program length, measuring project sprint durations, counting weeks until a deadline or event, or figuring out how many weeks pay/rent covers.
Frequently asked questions
How many weeks are between two dates?
Enter a start date and end date above. The tool divides the total number of days between them by 7 and shows both a whole-weeks-plus-leftover-days breakdown (e.g. "8 weeks, 3 days") and a decimal figure (e.g. "8.4 weeks").
Is a week counted as 7 calendar days regardless of which day it starts on?
Yes. This calculator counts elapsed calendar days and divides by 7 — it does not require weeks to start on a Monday or Sunday. It simply measures raw elapsed time between your two dates.
How is this different from a days-between-dates calculator?
It uses the exact same underlying day count, just presented as weeks instead of days — useful for tracking pregnancy weeks, project sprints, fitness program length, or how many weeks until an event.
Does it account for leap years?
Yes. The day count is calculated using UTC calendar-date math, which correctly accounts for leap years and is unaffected by Daylight Saving Time clock changes.