# How many work weeks left to or passed from the specific date in Excel

Excel 2016
When you plan a project, you can need to calculate a number of work days or full work weeks between start and end dates, or how many work days or work weeks left/passed. This tip is about easy and fast way of calculation of complete work weeks for weeks from Monday to Sunday.

You easily can change these formulas to calculate number of work weeks for weeks from Sunday to Saturday or any other work week.

For work weeks from Monday to Sunday, do the following:

1.   To calculate a number of complete work weeks between two dates, do the following:

1.1.   Calculate the next Monday from the start date:

= <start date> + 7 – WEEKDAY (<start date> + 7 - <day>)

where:

• the formula WEEKDAY() returns a number between 1 and 7 that corresponds to a particular day of the week. With default settings, 1 = Sunday, 2 = Monday, 3 = Tuesday, 4 = Wednesday, 5 = Thursday, 6 = Friday and 7 = Saturday,
• day is the day of week that you want to find, to find next Monday, it should be 2.

For example, to calculate next Monday from the 1st of June 2018 (it is Friday): 1.2.   Calculate the Sunday before the end date:

= <end date> - WEEKDAY (<end date> - <day>)

For example, to calculate the Sunday before the 31st of August 2018 (it is Friday): 1.3.   Calculate the difference between calculated dates and then divide the number of days to 7. It is necessary to return only the integer portion of the division result and discard the remainder of the division result, so, use the QUOTIENT function:

= QUOTIENT (numerator, denominator)

where:

• numerator is a dividend, a number to be divided,
• denominator is a divisor, a number to divide by.

For this example:

= QUOTIENT (<last Sunday> - <first Monday>, 7) 2.   If you need to calculate a number of complete work weeks passed from some date, use the formula:

= QUOTIENT (TODAY() - <first Monday>, 7)

Where TODAY() calculates current date.

For example, for the 1st of August 2018: 3.   If you need to calculate a number of complete work weeks left to some date, use the formula:

= QUOTIENT (<last Sunday> - TODAY(), 7)

For example, for the 1st of August 2018: So, summer 2018 contains 12 work weeks, from June 1st to August 1st there are 8 work weeks, from August 1st to August 31st there are 3 work weeks. The work week from August 1st to August 3rd is not a complete work week, and, thus, was not counted.

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