# cal2sql cal2sql loads calibration data from standard calibration files like [MFS06E0727.txt](../programmers_notes/programmers_notes.md#calibration-file) cal2sql creates a [sqlite3 database](https://www.sqlite.org/). To be functional in all software modules **the name must be calibration.sql3 and stored in the /db folder !** which is part of the survey structure of ProcMT. cal2sql can export data into various formats. In case you are writing your own software: create a database with your coils. It is better and more stable to use a database instead of an ASCII parser.