An online date difference calculator will help you find out the number of days, weeks, months or years between two dates.
Enter two dates to calculate the difference
An online date difference calculator allows you to accurately calculate the number of days, weeks, months and years between any two dates. The calculator takes into account leap years, different month lengths and accurately calculates the difference, including the start and end date.
The calculator is useful for scheduling events, calculating project deadlines, determining age, calculating vacation days, calculating interest for a period, and many other tasks related to dates and time intervals.
Let's look at practical examples of using the date difference calculator:
Calculation of days between January 1, 2024 and December 31, 2024
Входные данные:
Start date: January 1, 2024
End date: December 31, 2024Расчёт:
2024 is a leap year (366 days)
January 1 - day 1
December 31 - day 366
Difference: 366 - 1 = 365 days (365 days between dates)Результат:
Result: 365 days (12 months, 52 weeks)
Тип:
One calendar year
A leap year contains 366 days, but there are 365 days between January 1 and December 31
Calculation of days between February 1, 2023 and February 1, 2025
Входные данные:
Start date: February 1, 2023
End date: February 1, 2025Расчёт:
2023: 365 days (not leap year)
2024: 366 days (leap year)
2025: 365 days (not leap year)
From Feb 1, 2023 to Feb 1, 2025: 365 + 366 = 731 daysРезультат:
Result: 731 days (24 months, 104 weeks, 2 years)
Тип:
Two years with leap year
Leap year 2024 adds one extra day
Calculation of days between January 15, 2024 and January 25, 2024
Входные данные:
Start date: January 15, 2024
End date: January 25, 2024Расчёт:
January contains 31 days
From 15 to 25: 25 - 15 = 10 daysРезультат:
Result: 10 days (1 week, 3 days)
Тип:
Within one month
Simple calculation of the difference between the numbers of the month
Calculation of days between December 15, 2023 and January 15, 2024
Входные данные:
Start date: December 15, 2023
End date: January 15, 2024Расчёт:
From December 15 to December 31: 31 - 15 = 16 days
From January 1 to January 15: 15 days
Total: 16 + 15 = 31 daysРезультат:
Result: 31 days (1 month, 4 weeks, 3 days)
Тип:
Crossing the border of the year
Calculation includes days in both months and the transition through the New Year
Calculation of days between January 1, 2020 and January 1, 2024
Входные данные:
Start date: January 1, 2020
End date: January 1, 2024Расчёт:
2020: 366 days (leap year)
2021: 365 days
2022: 365 days
2023: 365 days
Total: 366 + 365 + 365 + 365 = 1461 daysРезультат:
Result: 1461 days (48 months, 208 weeks, 4 years)
Тип:
Several years
Leap year 2020 adds one day to the total
Calculation of days between your birthday May 15, 1990 and the current date January 1, 2024
Входные данные:
Start date: May 15, 1990
End date: January 1, 2024Расчёт:
From May 15, 1990 to January 1, 2024
Leap years: 1992, 1996, 2000, 2004, 2008, 2012, 2016, 2020 (8 years)
Normal years: 33 years - 8 = 25 years
365 × 25 + 366 × 8 + days from May 15 to the end of 1990 + days from the beginning of 2024 = ~12,295 daysРезультат:
Result: ~12,295 days (~403 months, ~1,756 weeks, ~33.7 years)
Тип:
Long-term settlement
Accurate calculation requires taking into account all leap years and exact dates
The difference between dates is calculated by calculating the number of days from the start to the end date, inclusively or exclusively (depending on the calculator settings).
Difference = End date - Start date (in days, weeks, months, years)
Leap years (divisible by 4, except for secular years, which are divisible by 400) contain 366 days instead of 365.
Month lengths: 31 days (January, March, May, July, August, October, December), 30 days (April, June, September, November), 28/29 days (February).
Our calculator provides many benefits:
Accounts for leap years, different month lengths and exact calendar dates
Works with any dates in the past and future
Shows the difference in days, weeks, months and years at the same time
Fully adapted version for all devices
Some useful tips for using the calculator:
The calculator calculates the number of days between two specified dates, taking into account leap years and exact month lengths. The result is displayed in days, weeks, months and years.
Yes, the calculator automatically takes into account leap years (years divisible by 4, except century years, which must be divisible by 400). A leap year has 366 days instead of 365.
Yes, the calculator works with any dates - both in the past and in the future. You can calculate how many days are left before the event or how many days have passed since the event.
The month difference is calculated as the approximate number of months between the dates. The difference in years is calculated similarly. Accuracy depends on specific dates and month lengths.
Depends on the calculator settings. Typically the start date is included, and the end date may be included or excluded. Check the operating logic in the calculator description.
The calculator works with dates without taking into account time and time zones. If you need to take time zones into account, first convert the dates to the same time zone.
Specify today's date as the start date and the event date as the end date. The calculator will show how many days are left until the event.
Specify last date as the start date and today's date as the end date. The calculator will show the number of days that have passed.
Yes, the calculator accurately calculates the difference even for intervals of tens and hundreds of years, taking into account all the leap years and the exact lengths of the months.
Yes, you can copy the result or take a screenshot of the page. Some calculators support exporting results in various formats.
Yes, the calculator is fully adapted to work on mobile devices, tablets and smartphones. The interface automatically adjusts to the screen size.
Yes, the calculator is completely free and does not require registration. You can use it an unlimited number of times without any restrictions.
The basic calculator counts all days including weekends. To calculate only working days, use a special working day calculator or clarify the settings.
The standard calculator does not take into account holidays. It calculates the exact calendar number of days. To take into account holidays, use specialized calculators.
This calculator calculates the difference in days, weeks, months and years. To calculate time (hours, minutes, seconds), use a time calculator or time difference calculator.
Enter the vacation start date as the start date and the vacation end date as the end date. The calculator will show the total number of vacation days.
Yes, enter your date of birth as the start date and today's date as the end date. The calculator will show your age in days, weeks, months and years.
Specify the project start date as the start date and the planned end date as the end date. The calculator will show the total project duration in various units of measurement.
The calculator uses the modern Gregorian calendar. For historical dates before 1582, the Julian calendar may need to be taken into account.
The calculator works with dates of the Common Era (AD). Dates before the Common Era (BC) will require special processing or a different calculator.
Enter today's date as the start date and the next salary date as the end date. The calculator will show how many days are left until you receive your salary.
Yes, enter the start date of the lease as the start date and the end date of the lease as the end date. The calculator will show the rental duration in days and other units.
Specify the date of the previous payment as the start date, and the date of the next payment as the end date. The calculator will show the interval between payments in days.
Yes, please enter the start date as the start date and the end date as the end date. The calculator will show the duration of training in various units.
Enter today's date as the start date and your next birthday as the end date. The calculator will show how many days are left until your birthday.
Yes, please enter the purchase date as the start date and the end date of the warranty as the end date. The calculator will show how many warranty days are left or have passed.
Specify today's date as the start date and the event date as the end date. The calculator will show the exact number of days before the event.
Yes, specify the start date of the subscription as the start date and the end date of the subscription as the end date. The calculator will show the duration of the subscription in days.
Specify the date of the previous visit as the start date, and the date of the next visit as the end date. The calculator will show the interval between visits in days.
Yes, specify the loan receipt date as the start date and the end date of the loan as the end date. The calculator will show the loan term in days and other units.