Table of Contents
When counting days between two dates, it's important to understand the difference between calendar days and business days. Use the Days Between calculator for calendar days, or Business Days for working-days-only counts. Find out how many days, weeks, months, and years since a past date or until a future event—from countdowns to Christmas to calculating your exact age. Track anniversaries, measure time since important events, or calculate age in days with precision. The doomsday for a given year is calculated relative to the anchor day for the century. The "count business days only" checkbox determines whether or not the selected number of days includes weekends.
The export feature generates a shareable link that preserves all settings and results. For business day calculations, enable "Business days only" and select your region. The calculator instantly computes the exact number of days between them. In the year 3000 (2200 + 400 + 400), the anchor day will be a Friday, and so on. Any other anchor day for any century can be determined relative to the anchor days for any chosen consecutive span of four centuries. Thus, it is only necessary to memorize the anchor day for four centuries.
The calculator result will include a count of the number of holidays included in the chosen time span. The day counter or days calculator above can be used in situations such as counting down to a birthday, counting the number of days into a pregnancy, the number of business days left for a project, etc. For example, from January 1 to January 5 there are 4 calendar days, regardless of whether any of those days fall on a weekend. Count business days, working days, and calendar days, weeks, months, and years. Yes — every calculator and live event countdown on HowLongAgoGo is free, with no sign-up required. And the Date Calculator adds or subtracts days, weeks, months, or years from any date — perfect for working out renewal dates, deadlines, or "X days from today".
Common Uses for a Days Between Dates Calculator
Perfect for calculating future deadlines, project milestones, expiration dates, and scheduling events ahead of time. Ideal for calculating past dates, determining start dates from deadlines, or tracking historical events. Enable "Include time" to add hours, minutes, and seconds for precise results down to the second, useful for tracking project deadlines or calculating exact age. Given a start date and a selected number of days to add or subtract, the calculator will determine the resulting date. The calculator always counts the start date as a full day, and counts the last date as a full day if the "include end day" box is selected. Whether you need to track deadlines, plan ahead, or count elapsed time, a date difference calculator gives you accurate results in seconds.
- After subtracting public holidays, most workers in the United States have around 249 to 251 actual working days per year.
- Calculate the exact time between any two dates instantly.
- All calculations account for leap years, varying month lengths, and the user's timezone.
- The calculator result will include a count of the number of holidays included in the chosen time span.
- For the even months, except for February, all of the doomsdays occur on the day corresponding to the given month (4/4, 6/6, 8/8, 10/10, 12/12).
Alternatively, selecting April 25th as the end day and not checking the "include end day" box would provide the same result. To use the day counter, use the drop-down menus to select a starting month, date, and year. After subtracting public holidays, most workers in the United States have around 249 to 251 actual working days per year.
Check a date
You can also check a work calendar specific to your country for holiday adjustments. Some industries and countries also count Saturday as a working day, giving 6 business days per week. In any given week, there are 5 business days (Monday through Friday). Need to know how many days have passed since a specific date?
Business Days excludes weekends and country-specific public holidays — useful for project deadlines and contract deliverables. The algorithm is based on "doomsdays," which are specific dates that all fall on a certain day of the week in a given year. The calculator returns the number of days between the selected date assuming a Monday to Friday work week and that the weekend falls on Saturday and Sunday. On average, a month has between 20 and 23 business days, depending on the month's length, how weekends fall, and whether public holidays are excluded.
Custom countdowns can be created and shared via a unique URL. Beyond the curated event list, HowLongAgoGo lets κωστασ anyone create a custom countdown to a personal date. Day of the Week instantly answers "what day was 12 January 1980?" or "what day will my deadline fall on?". Five focused calculators cover the most common date questions. Let us know (or use the feedback links in the footer anytime) × This agreement describes the conditions and rules under which SIA Webby ("our company", "we") offers you its services at daycalculator.com.
The Days Between tool counts the precise number of days, weeks, or months between any two dates. Each event page shows a live countdown timer, the date of the next occurrence, and useful context about the event. Browse live countdowns to every major holiday and cultural event of the year. Calculate the exact time between any two dates instantly.
Count down to birthdays, holidays, vacation, retirement, or any upcoming event you're anticipating. Calculate how many days have passed since a specific date. Calculate working days between dates, excluding weekends and holidays.