Array formula to calculate Days sales in inventory using monthly forward looking forecast

kriggler

New Member
Joined
Apr 21, 2015
Messages
1
Hello,
I am at a loss for figuring out what I assume to be a very complex formula.
I need to find Days sales in inventory using information in Monthly buckets (28,28,35 calendar).



For example: May ending inventory = $8,400,000
Next 5 Months of Cogs = $8,882,000 (sum calc June-October)
Next 5 Months # Days = 154 (sum calc June-October)
Shortage= $8,400,000-8,882,000= -482,000
Shortage Days = (-482,000/October Cogs $1,727,000)* 28 days in October= 8

Answer = 154-8=146 Days

Each ending month inventory could be 4, 5 or 6 months worth. So I believe I need an array to look for the first month the inventory would be negative.
I've seen this equation done in Days and Weeks but not Months transfered in days.
Appreciate any help!
 

Excel Facts

Copy formula down without changing references
If you have =SUM(F2:F49) in F50; type Alt+' in F51 to copy =SUM(F2:F49) to F51, leaving the formula in edit mode. Change SUM to COUNT.

Forum statistics

Threads
1,223,237
Messages
6,170,928
Members
452,366
Latest member
TePunaBloke

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.
Allow Ads at MrExcel

Which adblocker are you using?

Disable AdBlock

Follow these easy steps to disable AdBlock

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

Disable AdBlock Plus

Follow these easy steps to disable AdBlock Plus

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
Back
Top