# Interpolate or resample while exporting data
Select 'Batch Processing' from the Analysis window.
1. In the 'Export data' window, click the 'General' tab
* Enable 'Convert files.'
* Select the desired format for conversion, e.g., CSV
* Enable 'Convert each input file to separate output file.'
2. In the 'Input files' tab
* Click on the ‘Add file(s) for conversion’ icon
* Select the desired IVD file
* Click 'Open'
3. In the Converting Files tab
* Enable 'Change each item sampling rate using.'
* **Interpolation**: a mathematical method to calculate value at a specific time stamp, which lays on the line connecting previous and next samples.
* **Resampling**: specifies using the last known value, i.e., the value of the channel does not change until the next sample occurs.
* Enable other check boxes as desired.
* Used fix rate when processing samples at (time in msec)
* Align the beginning of the file time range by creating additional samples from 0ms
* Align the ending of the file time range by creating additional samples after the last ones.
Or
* Combine sampling rates from all items
***\*Resampling is a Licensed feature, get in touch with our*** [***technical support team***](https://www.influxtechnology.com/supportcontact) ***for more details**.*
Once done, click 'Process'.
Click 'Close' once the processing is complete.
Click 'OK' to proceed.
The files have been converted and saved at the defined location.
