Interpolation

Hello everybody !

I usually have to realize a regression in order to find a formula to interpolate some data.
For doing it,
- I generate the graph,
- then I find the right formula,
and
- finally I copy the obtained formula in the worksheet, separating the various coefficients

It is a very time-consuming method !

Does anybody of you know if there is any function to get it ?
Should it be the case, do you think I should post it in Excel programming forum ?

Thanks in advance !

No need for VBA -- Excel has LINEST and LOGEST functions that will allow you to retrieve the coefficients for a regression.