How it works
A walkthrough, end to end.
- 1
Pick a start and end date.
- 2
See total days, weekdays (Mon–Fri), weekend days, and weeks.
- 3
Inclusive option counts both endpoints.
Reference
Date difference
Total days = (end − start) / 86,400,000 ms. Weekdays count Mon–Fri only by walking each day.
Use cases
What you can do with this.
Vacation planning
Count business days between travel dates.
Project tracking
Days elapsed since kickoff.
Anniversary count
Days since a wedding, hire, or graduation.
Countdown to event
Days remaining until a launch or birthday.
Billing periods
Days in a billing window for prorated charges.
Court & legal deadlines
Calendar vs. business day count.
Pregnancy progress
Days from LMP to today.
Day counter 2026 — what's current
Foundational; calculator wins for instant business-day math.
FAQ
Frequently asked.
Inclusive counts both endpoints; exclusive counts the gap. Standard math is exclusive.
Not subtracted — only weekday vs weekend split is shown.
No. Calculations run in your browser.
Local time zone is used.