INDEPENDENT DATE CALCULATION UTILITY
Week Calculator
Count the exact number of weeks, calendar days, business days, and approximate months between any two dates, or determine an exact start or end date based on elapsed weeks.
Total Weeks Elapsed
Enter valid dates to calculate elapsed duration.
Total Days
0
Calendar days
Business Days
0
Monday–Friday
Approximate Months
0.0
totalDays / 30.44
- Decimal Weeks:
- totalDays / 7
- Rounded Weeks:
- Nearest integer
- Approximate Months:
- totalDays / 30.44 (not calendar-month precise)
- Business Days:
- Monday–Friday only (excludes Sat/Sun; public holidays not excluded)
FREQUENTLY ASKED QUESTIONS
Frequently Asked Questions About Week Calculation
Clear answers on how calendar days, decimal weeks, and business days are computed.
How do I calculate the number of weeks between two dates?
To calculate the number of weeks between two dates, count the total calendar days elapsed between the start date and end date, then divide by 7. For example, 28 calendar days equals exactly 4 weeks, while 30 calendar days equals approximately 4.29 weeks.
Does this calculator count weekends?
Yes. Total weeks, total days, and approximate months are calculated using complete calendar-day distance, including Saturdays and Sundays. The business days metric specifically isolates Monday through Friday, excluding weekends.
How do I count business days?
Business days are calculated by stepping through each elapsed day between your dates and counting only weekdays (Monday through Friday). Saturdays and Sundays are excluded. This utility counts all standard weekdays and does not make assumptions about federal or state public holidays.
Can I calculate an end date from a start date and number of weeks?
Yes. Switch to 'Start Date + Weeks' mode, enter your starting date, and specify the number of weeks. The calculator will project forward exactly 7 calendar days per week to determine your resulting target end date along with full elapsed duration metrics.
Is this calculator free?
Yes, this week calculator is completely free to use. There is no signup, account registration, software installation, or personal data collection required.