Calculate the exact difference between two dates in days, weeks, months, years, business days, hours, and minutes with monthly distribution breakdown.
The Date to Date Calculator computes the exact difference between any two dates in every useful time unit. Enter a start and end date and instantly see the gap in years, months, days, total calendar days, business days, weekend days, hours, minutes, and seconds — plus a visual weekday/weekend bar and a monthly distribution chart for long ranges.
This is one of the most commonly needed date calculations: How many days until my wedding? How many business days between contract signing and delivery? How many months since I started my job? How many hours in a school semester? This calculator answers all of these questions with a single pair of dates.
The calculator automatically handles date order — if you accidentally enter the start after the end, it swaps them and notes the reversal. Preset buttons for common ranges like the current year, Q1, summer, school year, and a full decade let you explore typical time spans with one click. The monthly breakdown table shows exactly how many days fall in each calendar month, which is essential for accrual accounting and project planning.
Counting days between dates by hand is error-prone, especially across months with different lengths, leap years, and year boundaries. This calculator gives you instant, exact results in every format you might need. Keep these notes focused on your operational context. Tie the context to the calculator’s intended domain. Use this clarification to avoid ambiguous interpretation.
Total Days = (End Date - Start Date) / 86,400,000 ms Business Days = weekdays (Mon-Fri) in range Weeks = floor(days / 7) Hours = days × 24, Minutes = hours × 60
Result: 364 days (11 months, 30 days)
From January 1 to December 31, 2026 is 364 calendar days — 260 business days and 104 weekend days. That's 52 weeks, approximately 11.96 months, or 8,736 hours.
The distinction between calendar days and business days trips up more people than any other date calculation. A "30-day" deadline that starts on a Friday means 30 calendar days — including 8-9 weekends. But a "30 business day" deadline means only Monday-through-Friday counts, stretching to about 42 calendar days. This calculator shows both counts side by side to prevent confusion.
Accrual-based accounting requires allocating revenue and expenses to the months they occur in. If a 90-day project spans March through May, the monthly breakdown shows exactly how many days fall in each month for proportional allocation. This is more accurate than simply dividing by 3, since months have different lengths.
Date-to-date calculations are essential for historical analysis: How many days was a president in office? How long did a construction project take? How many business days between earnings reports? Having precise counts — rather than rough estimates — improves the accuracy of any analysis that involves time-based metrics.
No. The calculator counts the days between the two dates. January 1 to January 2 = 1 day. If you need to include both endpoints, add 1 to the result.
The calculator automatically swaps them and shows a note. The result is always a positive number.
Business days are weekdays (Monday through Friday). Public holidays are not excluded since they vary by country and region.
Since months have different lengths (28-31 days), "approximate months" divides total days by 30.44 (average month length). The exact breakdown in the header accounts for actual calendar months.
Yes, but the dedicated age calculator provides more age-specific outputs like total birthdays, zodiac sign, and generation. This tool is better for general date ranges.
The header shows exact calendar months (accounting for different month lengths), while "approximate months" uses an average. Both are correct representations — use whichever suits your purpose.