Choose the date calculator for your question
Browse weekdays, calendar-day differences, weeks between dates, holiday countdowns and personal milestone trackers.
Core date math
Tools and calendarsDays Since CalculatorCalculate elapsed days, workdays, or the time remaining until your next important date. Choose two calendar dates, check whether…Open calculator →Core date mathDays Between Dates Calculator: Exact Calendar DaysEnter any two civil dates and calculate the elapsed calendar-day difference. The result includes weeks plus extra days, optional…Open calculator →Core date mathWeeks Between Dates Calculator: Full Weeks & DaysFind the number of complete seven-day weeks between two dates and the remaining days, including leap-year periods. The result…Open calculator →Core date mathBusiness Days Calculator: Count Weekdays Between DatesCount Monday-to-Friday dates between a chosen start and end date, while clearly distinguishing weekdays from local public holidays. This…Open calculator →Year baselinesHow Many Days in 2026 So Far?The year 2026 contains 365 days. Its ordinal day number, completed days, remaining days and percentage complete are different…Open calculator →Year baselinesWhat Day of the Year Is It?A date’s day-of-year number is its position from January 1: January 1 is day 1, and December 31 is…Open calculator →
Countdowns
HolidaysDays Until Christmas: Live December 25 CountdownFind the next Christmas Day without accidentally counting backward to last year. The live date selection always moves to…Open calculator →HolidaysDays Until New Year: Next January 1 CountdownFind how many calendar days remain before the next January 1. The calculator automatically chooses the next New Year’s…Open calculator →HolidaysHow Many Days Since Christmas?Christmas Day falls on December 25. This evergreen counter uses the most recent Christmas for elapsed days and the…Open calculator →HolidaysHow Many Days Since New Year’s?New Year’s Day is January 1. A day-of-year number includes January 1 as day one, while an elapsed-days counter…Open calculator →HolidaysHow Many Days Since Halloween?Halloween is observed on October 31 every year. Count the days since the last Halloween, calculate the next October…Open calculator →HolidaysHow Many Days Since Thanksgiving?In the United States, Thanksgiving is the fourth Thursday in November rather than a fixed calendar date. The counter…Open calculator →
Anniversaries and relationships
Personal milestonesHow Many Days Since We Met?Choose the date you first met someone important and turn that memory into an accurate day count. The next…Open calculator →Personal milestonesDays Since Our WeddingEnter your wedding date to see days married, the next anniversary and practical milestone markers. If the ceremony is…Open calculator →Personal milestonesHow Many Days Since My Birthday?A birthday occurs each year, but a birth date is fixed. This page separates the days since your most…Open calculator →HolidaysHow Many Days Since February 14?February 14 is observed as Valentine’s Day each year. Use the annual tracker to measure the time since the…Open calculator →HolidaysHow Many Days Since Valentine’s Day?An evergreen Valentine’s Day tracker helps users find the most recent February 14, the next February 14 and an…Open calculator →
Recovery and streaks
Wellness trackersDays Since Quit Smoking CalculatorSet a quit-smoking date, enter an optional typical daily cigarette count and cost, and see an estimated streak and…Open calculator →Wellness trackersDays Since Last DrinkTrack the date of your most recent alcoholic drink, review the next short milestone and plan practical support. Alcohol…Open calculator →Wellness trackersDays Since Last CigaretteChoose the date of your last cigarette to see smoke-free days, upcoming checkpoints and optional estimates of cigarettes not…Open calculator →
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How to choose the right date tool
Pick Days Between Dates for calendar-day differences, Business Days for Monday–Friday counts, or Days Until Christmas for a repeating holiday countdown. Your chosen dates stay local until you share a link.