Two-way index match that rounds up

[rwborden0519]

I'm trying to create a formula that does a 2 way intersect. The user will type in 3 numbers.

1. First number (Temperature) will identify the table needed. (Temperature entered will round down. For example: if temperature is 19-degrees, use the 15-degree table).
2. Second number (PH) will round up to closest value in table
3. Third number (CL2) will round up to closest value in table

This is my formula, but it's not consistent.
Example 1 = INDEX($K$4:$Q$17,MATCH(ROUND(T11,1),$J$4:$J$17,1),MATCH(ROUND(T10,1),$K$3:$Q$3,1))
Example 2 =INDEX($B$22:$H$35,MATCH(ROUND(T26,1),$A$22:$A$35,1),MATCH(ROUND(T25,0),$B$21:$H$21,0))

 

[Peter_SSs]

Welcome to the MrExcel board!

It might help if we could have a smallish set of sample data, an expected result and a new explanation in relation to that sample data.

MrExcel has a tool called “XL2BB” that lets you post samples of your data that will allow us to copy/paste it to our Excel spreadsheets, so we can work with the same copy of data that you are. Instructions on using this tool can be found here: XL2BB Add-in

Note that there is also a "Test Here” forum on this board. This is a place where you can test using this tool (or any other posting techniques that you want to test) before trying to use those tools in your actual posts.