Days Between Dates Calculator

To calculate days between two dates manually, subtract the start date timestamp from the end date timestamp in milliseconds and divide by 86,400,000 (milliseconds in a day). Account for leap years (29 days in Feb) and varying month lengths (28, 30, 31). Alternatively, enter your dates into the free CalculatorsDaily Days Between Dates calculator for instant accuracy.

To calculate days between a past or future date and today, set 'Start Date' as your chosen date and 'End Date' as current today's date (or vice versa). The tool will output total days, weeks, and months elapsed or remaining from today.

To calculate work days (business days) between two dates, count the total calendar days and subtract all Saturdays and Sundays. In spreadsheet applications like Microsoft Excel or Google Sheets, use the formula =NETWORKDAYS(start_date, end_date, [holidays]).

To find the number of weeks between two dates, calculate the total number of days and divide by 7 (Weeks = Total Days / 7). For example, 140 days equal exactly 20 weeks.

In Microsoft Excel, you can count days between dates using a simple subtraction formula =B1-A1 (where A1 is start date and B1 is end date), or using the function =DATEDIF(A1, B1, "d"). To calculate working business days excluding weekends, use =NETWORKDAYS(A1, B1).

The easiest way to calculate date differences is using an online date to date calculator like CalculatorsDaily. Select your start and end dates on the calendar picker to instantly view total days, weeks, months, and formatted breakdowns without doing manual calendar math.