Date Calculator Logo

Date Calculator

Please select the date, the years, months, days and time values to add or subtract days to start using date calculator.

Starting Date
Date Format
Time Format Month Day Names
Please select starting date and
add/subtract days, months, years to calculate date.

About Date Calculator

Dear friends! Allow us present you this new and quite unique in its nature online Date Calculator, which can turn into a very useful tool for certain occasions. To put it short, this online Date Calculator calculates the duration between 2 dates, and also can perform certain arithmetical operations with them. We offer you a tool which effectively adds or subtracts days, weeks, months and years to/from a given date. It is very easy to use and can be a great help for every user of this website.

At the first sight, one may not understand why he or she could be in need of calculating the duration between two dates. Have you ever wondered, how old are you, in days, months, or hours? Our Date Calculator will help you to learn the answer to this question within minutes. Some people may need this kind of date calculations in order to manage their medicine intake or their health issues. Finally, this kind of information can be useful for businessmen dealing with certain legal documentation, for those who are planning a wedding or other important events in their life.

Help for the Date Calculator

In order to make use of this Date calculator, one should go through 4 simple steps for calculating date.

Date Input

In the box on the left above, you can select the starting day, month and year for your calculation. You can also set the starting time under the date inputs. To set a date input you may use the pre-defined dates like Today, tomorrow, yesterday. 'Now' button will set the starting time to the current moment.

Day Values and Operator

In the box on the right above, you can select the day, month and year to be added or subtracted with the starting date. There, you can also select the values of the hour, minute and second to be calculated.

Date Options

Under the date input box, you can select the date format, time format and whether the month name and day name will be shown or not. Date format is useful for showing the calculated date would be more readable.

Date Calculation Result

After selecting the starting date and the desired date options, press the Calculate Date button, and the date result will appear under the calculate button with your selected options.

Need to find how many days until a date? Check out Days Until Calculator

Recent Comments
Ganesh 2021-05-11 20:36:45

Awesome app loved it did a date calculation for my rent agreement and got the exact precise date

Vincent 2021-05-10 09:40:43

This is the best

gia 2021-01-17 16:37:14

I love this :)

Aidan Cash 2020-11-17 16:40:32

I love this site! I calculated this really old date, '10/17/09' and calculated how many days apart that is to 4/17/21.

Tony Spirito 2020-08-03 08:34:33

I can use this for Virtual Memorials where I put in the people's birth and death dates to tell me how many days they have been alive :)

stuart 2020-06-18 02:40:02

I am a poor old pensioner. I am paid by UK Gov every 28 days.
Tomorrow is pay day.YIPEE. Thanks to your calculator I am able to see when I will be paid from now to eternity.
Thank you very much

chuan 2020-05-31 17:54:23

thank you for the useful tools

Marc 2020-04-24 10:09:46

I need to add 15 months from a date in the future --- Your site is what i needed! Great work!

Editor 2019-12-26 05:57:29

Dear Nicole,
Thanks a lot for your amazing comments.
We are going to improve our website, please keep using datecalculator and sharing your thoughts.
Best regards.

Ladyboo1 2019-10-29 09:39:12

that's the day I will retire

Dan 2019-08-11 06:10:05

Thanks for the site! Should have a Bitcoin donation link!

Nicole C 2019-06-23 20:46:13

I arrived here via Google. I needed to know what the date would be 18 months from 8/1/2018. Google led me to the days-from-today calculator and I was disappointed it could only calculate 18 months from *today*. Then I looked closer and realized there were links to more date calculators across the very top of the page! DateCalculator is awesome!
I fully appreciate that this site has no advertisements (also awesome! I'm so sick of pop-up ads!!!); that it's a free public service you're offering...not to mention that you are university students with classes, social lives, possibly jobs as well. So thanks and kudos, and I understand you may not have time to 'polish' the site. But if you do, my suggestions: make the 'index' of types of calculators at the time more visible/prominent, and consider changing the symbol between them - because A >> B typically either denotes that B is a subcategory of A or that B is the next step after A.

Colleen C 2019-05-12 14:28:35

I like this calculator. Helpful on farm for calf cow health management.

J williams 2018-10-08 20:28:10

"Excellent job- on finding this i can now do so much much quicker.
Great stuff "

xplayerx 2018-08-24 02:55:04

i suggest that if you can create a game that allows the site visitor to guess other visitor's birthdays and have a simple chat forum in your site. That will be great you know. You will also have many visitors in your site.

xplayerx 2018-08-24 02:52:16

can you add some functions like birthday notifications and connect it to the fb users account who will sign up an account to your site.

xplayerx 2018-08-24 02:46:51

I think you should restrict the text field maxlength to what ever it may be so that the user will not be able to enter unnecessary numbers like 1111111111111111111...

William 2018-08-21 08:11:48

Is it possible to get this application as a standalone application to use offline?

Mario 2017-12-05 18:16:37

Please How do I calculate 84 months from April 2016?

Vishal 2017-04-08 09:06:49

Good Work

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