Find a customer usage for a given period of time - excel

I have to bill a customer based on monthly usage however I'm only provided with a date range and total usage. I need to calculate the average daily usage, then calculate the number of days in each for the bill period, then multiply the days in month by the average to get the number of 'x' to bill the customer.
For example. I have two customers below and each has a different bill period and usage.
I'm given the data in Excel below. I'm struggling to build a formula that will give me A) the number of days in each month, B) the average use per day, C) the total amount used in each month. See the example below with how I calculate by hand.
Cell A1 Cell A2 Cell A3
9/5/2017 10/4/2017 83
Example:
Billing Period
Cust #1: 9/4/2017-10/4/2017 and usage is 85
Cust #2: 9/11/2017-10/11/2017 and usage is 1065
Cust #1
Sept Days is 27
Oct Days is 4
total days is 31
Ave use per day 2.7 (85 divided by 31)
Answer:
**Sept Usage is 74 Oct Usage is 11**
Cust #1
Sept Days is 20
Oct Days is 11
total days is 31
Ave use per day 34.35 (1065 divided by 31)
Answer:
**Sept Usage is 687 Oct Usage is 378**

Related

How to sum last 3 months by looping through a list in excel?

I have a list of values for each month 1 to 12 in excel. When the quarter ends in December then it should sum the values for the quarter Oct, Nov, and Dec i.e. Month 10, 11, and 12. The current function used is an offset function
=SUM(OFFSET(INDEX($F$999:$F$1008,MATCH(MONTH($B1013),$E$999:$E$1008)),0,0,-3,1)).The formula works well when the starting position is Mar, Jun, Sep, and December. However, assume the quarter ending month is Jan. Then using the above function will only sum values for Jan because above that there are no values 2 months prior.
Desired outcome: If the quarter ends in Jan then it should loop through the list and sum Nov, Dec, and Jan. The goal is to perform a sensitivity analysis because the quarter ending month can be any month, and based on the quarter ending month it will sum up all the values for the quarter.
The list is given below, so if the quarter ends in Feb it should sum (Dec) 10% + (Jan) 3% + (Feb) 6% = 19%
Jan 1 3%
Feb 2 6%
Mar 3 2%
Apr 4 9%
May 5 5%
Jun 6 8%
Jul 7 3.2%
Aug 8 12%
Sep 9 6.5%
Oct 10 5.6%
Nov 11 8%
Dec 12 10%

The trick is to generate a numeric sequence that will match the required months.
Note that, in your table, the month number = the index into the table.
A formula that will generate the required sequence, such that if you the quarter ending month is January (eg month number 1) => {11,12,1} is
Office 365: =SUM(INDEX(monthly,MOD(SEQUENCE(3, ,F2+12-2)-1,12)+1,3))
older versions: =MOD(ROW(INDEX($A:$A,1):INDEX($A:$A,3))+F2+12-4,12)+1
where F2 contains the month number of the ending quarter.
So for O365:
=SUM(INDEX(monthly,MOD(SEQUENCE(3, ,F2+12-2)-1,12)+1,3))
or : =SUM(XLOOKUP(MOD(SEQUENCE(3, ,F2+12-2)-1,12)+1,monthly[monthNum],monthly[perCent]))
where monthly is the name of your table
For earlier versions, try:
=SUM(INDEX(monthly,MOD(ROW(INDEX($A:$A,1):INDEX($A:$A,3))+F2+12-4,12)+1,3))
or even:
=SUM(INDEX(monthly,N(IF(1,MOD(ROW(INDEX($A:$A,1):INDEX($A:$A,3))+F2+12-4,12)))+1,3))
In some earlier versions of Excel, you may need to "confirm" this array-formula by holding down ctrl + shift while hitting enter. If you do this correctly, Excel will place braces {...} around the formula as observed in the formula bar

Calculate 30 hrs (24hrs+) time as single day in excel

I have a restaurant log in following format.
Date | Time | Bill Number | Item | Price | Total Orders
The store time is 11 Am to next day 5 am.
which will be over 24 hours.
But I want to calculate 11 am to next day 6 am as a single day.
Currently I am using Filter and sort to do it, but since data is of 2-3 months, is there a formula to sort it out?
For example
Jan 1st 11 am to Jan 2nd 6 am -> I want to calculate these time period as one day.

Solved it
using this
=TRUNC(B2+C2-TIME(6,0,0))

Select the majority value

I have the following Excel spreadsheet:
A B C D
1 Sales Price Sales Price Sales Price
2 January February March
3 Year 01 50 70 90
4 Year 02 50 60 40
5 Year 03 60 70 30
6 Year 04 40 60 50
7 Year 05 50 40 25
8
9 Majority Sales Price: 50 70 90
In Rows 3-7 you see the sales price of a product from the months January-March in 5 years (Year 01 - Year 05).
In Row 9 I want to select the sales price which has the majority within each month.
For example in January the sales price of 50 has the majority because it appears both in Year 01 and Year 02.
Please keep in mind the following criterias:
a) If there is no majority of a sales price the highest sales price should be picked. (Cell D9)
b) If two or more sales prices have the same majority the higher one should be picked. (Cell C9)
What formula do I need to get my desired result?

In cell B9 enter the following formula as an array, i.e. Ctrl+Shift+Enter:
{=IFERROR(MAX(MODE.MULT(B3:B7)), MAX(B3:B7))}
This uses MODE.MULT to find the modal value(s), which returns the result as an array. If there is more than one modal value, MAX returns the highest out of that array. If there is no modal value, MODE.MULT throws an error, hence the IFERROR statement which is used to find the max value in the error case.

How to calculate no of days spent per month from the data in MS Excel?

I have a data which has a hotel check in date and check out date. I would be calculating the number of days spent at the hotel, I would simply subtract both of them and I have the days difference.
I now have to pick up the customers who stayed for more than 31 days and find out how many days they had spent per month. For example, some one checking in on 18th July 2015 and checked out on 18th September 2015, there should be multiple columns, corresponding to that cust which reads 13 31 18, for days spent per month. (July, Aug, Sept)
Example data and sample output :
Client Check In Check Out
Majestica Inn 22-May-15 22-Jun-15 31 9 22
Twin Tree 29-May-15 30-Jun-15 32 2 31
Connaught Mews 1-Jun-15 31-Jul-15 60 29 31
Majestica Inn 18-Jul-15 18-Sep-15 62 13 31 18
Majestica Inn 18-Jul-15 18-Sep-15 62 13 31 18
I am new to Excel, please help.

if you can be flexible about the number of columns then you can use the below formulas to get the desired output.
Formula To Get The Days:
Remark: paste this formula in cell e2 and then drag & copy.
=IFERROR(IF(AND(MONTH(E$2&"-"&YEAR($B3))>=MONTH($B3),MONTH(E$2&"-"&YEAR($C3))<=MONTH($C3)),IF(MONTH(E$2&"-"&YEAR($B3))=MONTH($B3),DATEDIF($B3,EOMONTH($B3,0),"D"),IF(MONTH(E$2&"-"&YEAR($B3))=MONTH($C3),DATEDIF(DATE(YEAR($C3),MONTH($C3),1),$C3,"D")+1,DATEDIF(DATE(YEAR($C3),MONTH(E$2&"-"&YEAR($B3)),1),EOMONTH(DATE(YEAR($C3),MONTH(E$2&"-"&YEAR($B3)),1),0),"D")+1)),""),"Err")
Formula For Concatenating:
=IFERROR(DATEDIF($B2,$C2,"D")&IF(E2<>"",",","")&CONCATENATE(E2,IF(F2<>"",",",""),F2,IF(G2<>"",",",""),G2,IF(H2<>"",",",""),H2,IF(I2<>"",",",""),I2,IF(J2<>"",",",""),J2,IF(K2<>"",",",""),K2,IF(L2<>"",",",""),L2,IF(M2<>"",",",""),M2,IF(N2<>"",",",""),N2,IF(O2<>"",",",""),O2,IF(P2<>"",",",""),P2),"")

And If You Don't Want To Add any Columns Then Try This One......
Paste in Cell D2......
=IFERROR(SUBSTITUTE(DATEDIF($B2,$C2,"D")&","&IFERROR(IF(AND(MONTH("Jan"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Jan"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Jan"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Jan"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Jan"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Jan"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Feb"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Feb"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Feb"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Feb"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Feb"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Feb"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Mar"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Mar"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Mar"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Mar"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Mar"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Mar"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Apr"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Apr"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Apr"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Apr"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Apr"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Apr"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("May"&"-"&YEAR($B2))>=MONTH($B2),MONTH("May"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("May"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("May"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("May"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("May"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Jun"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Jun"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Jun"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Jun"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Jun"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Jun"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Jul"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Jul"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Jul"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Jul"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Jul"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Jul"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Aug"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Aug"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Aug"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Aug"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Aug"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Aug"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Sep"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Sep"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Sep"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Sep"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Sep"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Sep"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Oct"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Oct"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Oct"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Oct"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Oct"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Oct"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Nov"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Nov"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Nov"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Nov"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Nov"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Nov"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&IFERROR(IF(AND(MONTH("Dec"&"-"&YEAR($B2))>=MONTH($B2),MONTH("Dec"&"-"&YEAR($C2))<=MONTH($C2)),IF(MONTH("Dec"&"-"&YEAR($B2))=MONTH($B2),DATEDIF($B2,EOMONTH($B2,0),"D"),IF(MONTH("Dec"&"-"&YEAR($B2))=MONTH($C2),DATEDIF(DATE(YEAR($C2),MONTH($C2),1),$C2,"D")+1,DATEDIF(DATE(YEAR($C2),MONTH("Dec"&"-"&YEAR($B2)),1),EOMONTH(DATE(YEAR($C2),MONTH("Dec"&"-"&YEAR($B2)),1),0),"D")+1))&",",""),"Err")&"0|",",0|",""),"")
Good Luck .............

Excel find date difference between minimum and maximum date in month

I'm trying to fix up a formula I have that's having some issues. It's supposed to track # days invoiced in a month, so the high-level idea is to take the maximum date in a month and subtract the minimum date in the month, and on error subtract the 1st day of the month. My current formula has issues adjust for invoices that may cross months, an example being 1/25 - 2/3 where if this were the only invoice, January should show 7 days invoiced and February would show 3. If there were another invoice from 2/15 - 2/28, I would want Feb to show the maxed invoice days, 14 in this example.
For reference here's what a table could look like:
A B C D E F
start month end month invoice begin invoice end Month Max Days invoiced
jan 1 feb 1 1/25/14 2/3/14 1/1 7
feb 1 feb 1 2/15/14 2/28/14 2/1 14
3/1
etc.........
I tried the formula below but it was erroring out, plus I don't think it will account for gaps in invoices like in my example.:
=IF(B2:B100=X1,MAX(D2:D100),) - IF(A2:A100=X2,MIN(C2:C100),A2)
'where column X is a list of months, X1 = 1/1, X2 = 2/1, etc.
No luck with this formula either, keeps erroring out and giving 0 values:
{=DATEDIF(IF(A2:A100=E2,MIN(C2:C100),),IF(B2:B100=E2,MAX(D2:D100),),"d")}
I appreciate your help!

Not sure exactly what you are looking for but you could probably make use of the EOMONTH() function. Here's an example of it:
=EOMONTH(A2,0)-A2+1
by the way - here is how you would get the start of the month:
=EOMONTH(TODAY(),-1)+1
Try the following per your comment below:
"I think this could be useful but I'm not sure it would work if the invoice end was, say, 2/21 or anytime before the EOM"
=IF(B3>=EOMONTH(A3,0),EOMONTH(A3,0)-A3+1,B3-A3+1)

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