The Precise Business Day Calculator
Count the exact number of working days or total calendar days between any two dates. Reliable, fast, and optimized for 2026.
Total Result
Working Days vs. Calendar Days
In the United States, most professional projects are measured in business days. This means Saturdays and Sundays are excluded from the timeline. Our calculator allows you to toggle between both modes to get the most accurate estimate for your needs.
- Accurate weekend exclusion logic.
- Optimized for iPhone, Android, and Desktop.
- Instant calculations without page reloads.
Why Accuracy Matters
Missing a deadline by even one day can have legal or financial consequences. That's why our algorithm uses the JavaScript `Date` object correctly, handling UTC time to avoid errors caused by Daylight Saving Time (DST) shifts in North America.
Frequently Asked Questions
How many working days are in a year?
Typically, there are about 260 to 262 working days in a year, depending on the number of weekend dates and holidays.
Are US Holidays included?
Currently, our tool excludes weekends (Saturdays and Sundays). US Federal holidays vary by state and company policy, so we provide the standard working week count.
Is the leap year calculated?
Yes, our system automatically accounts for February 29th during leap years, ensuring your day count is always 100% precise.