# Using SUMIFS to calculate occupancy on a given day when start + end dates + # of occupants known

#### lavetta

##### New Member
Hi,

I need some help with the SUMIFS function (or alternative if that is better suited).

I have a spreadsheet that contains holiday booking information, and I would like to calculate how many people are present on a given day.

I have three columns of data:

• Column A = number of occupants in a booking (i.e. this is the number to be summed if the conditions are met)
• Column B = start date of booking
• Column C = end date of booking

We can consider that Column D = date on which I want to calculate the occupancy (essentially I want to have a column with all the days in a year - e.g. D1 = Jan 1st, D2 = Jan 2nd...).

In plain English, I want to SUM the number of occupants (Column A) on a given date (Column D). The occupants will be summed IF the chosen date (Column D) is equal to or more than the start date of the booking (Column B) AND is less than the end date of the booking (Column C) - i.e. our chosen date in Column D must be between the dates in Columns B and C.

Currently I have the following formula which gives a "0" result:

=SUMIFS(\$A\$2:\$A\$668, \$B\$2:\$B\$668, ">=" & D2, \$C\$2:\$C\$668, "<=" & D2)

Any help on the syntax would be greatly appreciated!!!

It would also be useful to have a similar formula that counts the number of arrivals on a given day - at the moment I can only get it to SUM the number of occupants (i.e. I can't get COUNTIF to work... I guess one alternative would be add a single column with "1" in each cell):

=SUMIFS(\$A\$2:\$A\$668, \$B\$2:\$B\$668, ">=" & D5, \$B\$2:\$B\$668, "<=" & D5)

I am using Excel 2011 on Mac.

Many Thanks!!

### Excel Facts

Whats the difference between CONCAT and CONCATENATE?
The newer CONCAT function can reference a range of cells. =CONCATENATE(A1,A2,A3,A4,A5) becomes =CONCAT(A1:A5)
I preferr to use the "SUMPRODUCT" function. It seems to be a little more straight forward.

I preferr to use the "SUMPRODUCT" function. It seems to be a little more straight forward.

Thanks for the reply engineer69, unfortunately it's not working as the result is still coming out as "0".

I tried this formula:

=SUMPRODUCT((\$A\$2:\$A\$668)*(\$B\$2:\$B\$668>=D6)*(\$C\$2:\$C\$668<=D6))

Replies
2
Views
131
Replies
3
Views
189
Replies
1
Views
203
Replies
1
Views
172
Replies
15
Views
245

1,214,773
Messages
6,121,479
Members
449,034
Latest member
Raygers

### We've detected that you are using an adblocker.

We have a great community of people providing Excel help here, but the hosting costs are enormous. You can help keep this site running by allowing ads on MrExcel.com.

### Which adblocker are you using?

1)Click on the icon in the browser’s toolbar.
2)Click on the icon in the browser’s toolbar.
2)Click on the "Pause on this site" option.
Go back

1)Click on the icon in the browser’s toolbar.
2)Click on the toggle to disable it for "mrexcel.com".
Go back

### Disable uBlock Origin

Follow these easy steps to disable uBlock Origin

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back

### Disable uBlock

Follow these easy steps to disable uBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back