Convert Accelerometer Data to frequency

Hello, I am reading xyz values from an external accelerometer and I want to convert these values into frequency domain, any idea of how could I implement this on the MIT APP. Thanks!

Can you be more elaborate on what do you want to do.
Maybe give an example of the conversion of accelerometer data to frequency.

We are currently reading raw accelerometer data X Y Z values from the accelerometer. I believe these are in time domain. We were thinking in using FFT to convert these three values into a frequency.