New Square Chambers - Day Calculator

Day Calculator

Full instructions for using this Day Calculator, and important legal notices, are further down this page.

I want to calculate the number of days between two particular dates:

Today is

1 Select your starting date:

2 Select your ending date:

Answer:
days
(excluding the starting date
but including the ending date).

I want to add/subtract a particular number of days to/from a particular date:

Today is

1 Select your starting date:

2 Add or subtract? Add Subtract
3 Number of days? day(s)

Answer:
Ending date:

(excluding the starting date
but including the ending date).

Instructions

To calculate the number of days between any two dates (ie. the left hand form above):

Step 1 - Choose your starting date
Select the starting date of your choice using the drop-down arrows next to each selection box. When you open the Day Calculator, the date is automatically set to today's date. As the calculator takes today's date from your system clock, it is important to make sure that your system date is correctly set for this function to work properly.

Step 2 - Choose your ending date
Select the ending date of your choice using the drop-down arrows next to each selection box. When you open the Day Calculator, the date is automatically set to today's date. As the calculator takes today's date from your system clock, it is important to make sure that your system date is correctly set for this function to work properly.

Step 3 - Calculate
Press the button marked "Calculate" to carry out the calculation. The number of days difference will be displayed at the bottom of the form. Note that the calculation excludes the starting date itself (ie. day number 1 is the day after your starting date) but includes the ending date.

To add or subtract a chosen number of days to or from any date (ie. the right hand form above):

Step 2 - Choose whether to add or subtract
Either select the radio button marked "Add" or the radio button marked "Subtract".

Step 3 - Type in the number of days to add or subtract
This must be a whole number.

Step 4 - Calculate
Press the button marked "Calculate" to carry out the calculation. The new ending date will be displayed at the bottom of the form, including the day of the week. Note that the calculation excludes the starting date itself (ie. day number 1 is the day after your starting date) but includes the ending date.

Legal Notices

Browser compatibility. This calculator is designed for use with all modern browsers. It requires JavaScript to be enabled. The page is best viewed at a resolution of 800 x 600 or higher.

Year 2000 compliance. This calculator is year 2000 compliant, assuming that the system on which it is used is also year 2000 compliant. In other words, it works for dates before, after, in, and spanning, the year 2000.

Disclaimer. Every effort has been made to ensure that this calculator functions correctly, and members of Chambers themselves use it. However, no liability can be accepted for any errors which might arise in its operation, and use is entirely at the user's risk.

Copyright. © 2000-. Copyright in this calculator vests in the Head of Chambers for the time being of New Square Chambers. However, this calculator is freeware and may be used on this website without charge for any commercial or non-commercial purpose.

Feedback. If you have any comments (whether good or bad) on this calculator or if you spot any errors, New Square Chambers would be only too pleased to hear about them. Please e-mail us. Thank you.