Date ± Days Calculator / Date ± Business Days Calculator

Days or Business Days
Today (UTC) is:
Friday September 30, 2016 (9/30/16)

Date Format:

Date: mm/dd/yy   Days:
Business Days

Friday September 30, 2016

plus 180 days is

Wednesday March 29, 2017

Calculator Use

Calculate days or business days added to or subtracted from a date.  Enter the date and the number of days to add or subtract. Check "Business Days Only" to calculate only business days (Monday through Friday) from a date or business days ago.

Related Calculator: Date Difference

Counts actual days based on the date you submit; a year is 365 days and a leap year is 366 days.

Date Formats:

Formats for USA and Europe should use slashes or dots. mm/dd/yy or dd/mm/yy or mm.dd.yy or ISO is for international date format in the form yyyy-mm-dd from ISO 8601. Today's date is Greenwich Mean Time (GMT).


Cookies are used to remember your last settings for Format, Days and Business Days choices.


This calculator does not factor out holidays.  If you are counting holidays as non-business days you must extend your final date to include the number of holidays you span.

Federal Holidays from the U.S. Office of Personnel Management

Financial Market Holidays from NYSE Euronext

Use this calculator as a days calculator.  Calculate days for contracts, shipping, business agreements, etc. Common number of days to calculate in the future are 180 day calculator, 30 day calculator, 120 day calculator or something like 90 days ago or past.  These common periods of time are generally related to contract deadlines, business payment terms, law and legal deadlines or personal and business contracts.

You can calculate common time frames such as 30 days from a date, 60 days from a date, 90 days from a date, 120 days from a date, 180 days from a date, etc.  In the future you can also calculate business days from a date.

Similarly by using the minus sign you can calculate days back in time such as the date 30 days ago, 60 days ago, 90 days ago, 120 days ago, 180 days ago, etc.


Cite this content, page or calculator as:

Furey, Edward "Date Days Calculator" From - Online Calculator Resource.