Count Days Between Two Dates
Enter two dates to see exactly how many days are between them.
How Days Between Dates Works
Four steps to count days between any two dates.
Enter From Date
Pick the start date — the beginning of the period you want to count.
Enter To Date
Pick the end date. Click "To = Today" for counting up to the current date.
Calculate
Click "Count Days" and the tool computes the exact difference in calendar and business days.
View Breakdown
See total days, business days, weekends, weeks, hours, and approximate months.
What Is a Days Between Dates Calculator?
Understanding day counting between dates.
Day counting explained
A Days Between Dates Calculator finds the exact number of calendar days between two dates. It subtracts the earlier date from the later date, accounting for month lengths, leap years, and year boundaries.
Unlike year/month/day breakdowns, this gives a single total day count — useful for comparisons, deadlines, and age-in-days calculations.
Business vs calendar days
Calendar days include every day. Business days skip weekends (Saturday and Sunday). A 30-calendar-day period contains about 21-22 business days. Legal deadlines, shipping estimates, and bank processing often use business days.
Inclusive vs exclusive counting
From January 1 to January 3: 2 days (exclusive — counting midnights). If you want both dates included, add 1 for 3 days (inclusive). Most applications use exclusive counting.
When to Count Days Between Dates
Common day counting scenarios.
Shipping Tracking
Count transit days from ship date to expected delivery. Compare actual vs estimated delivery timeframes.
Medical Records
Track days since surgery, treatment start, or symptom onset. Doctors need exact day counts for medical records.
Legal Deadlines
Count statute of limitations days, filing deadlines, and response periods with precision.
Interest Calculations
Banks calculate daily interest based on exact day counts. Know the precise number of days for loan or savings calculations.
Academic Planning
Count days until graduation, exam dates, or semester breaks. Plan study schedules based on remaining days.
Fitness Goals
Track training streaks and days since starting a fitness program. Count days to goal completion.
Days Between Dates Examples
Common day count scenarios.
New Year to today
Jan 1 → Jun 23 = 173 days. Almost halfway through the year (47.4%).
Quarter length
Jan 1 → Mar 31 = 89 days (90 in leap year). A standard fiscal quarter.
Full year
Jan 1 → Dec 31 = 364 days. A year minus 1 day (inclusive counting gives 365).
Frequently Asked Questions
Common questions about Days Between Dates.
Enter a start date and end date. The calculator instantly shows the total number of calendar days between them, plus business days, weekend days, and complete weeks.
By default the calculator counts the days between (exclusive). The result equals the number of midnights between the two dates. If you need inclusive counting, add 1 to the result.
Business days are weekdays — Monday through Friday. The calculator counts how many weekdays fall between the two dates. Public holidays are not excluded since they vary by country.
Yes. Enter any two dates regardless of whether they are in the past or future. The calculator always returns the absolute number of days between them.
The calculator uses the JavaScript Date API with full Gregorian calendar support. It correctly handles leap years, varying month lengths, and date boundary crossings for complete accuracy.
Yes, completely free. No sign-up needed. All calculations happen in your browser — your data is never stored or transmitted.