While no one would use Excel for production AI, this exercise turns a "black box" neural network into a transparent, cell-by-cell calculation. You can now extend this to 3 hidden layers, ReLU activation functions, or even a regression task. The only limit is your row count and patience.
Set up a "Forward Pass" area where data flows from inputs to the final prediction. Reserve cells for your input features (e.g., Weights ( ) and Bias ( build neural network with ms excel full
Building a full neural network in Microsoft Excel is possible without external plugins by using native formulas to handle forward propagation and the Solver Add-in While no one would use Excel for production
Stopping criteria