# 7. Converter modules¶

Converters are the classes that MDAnalysis uses to convert MDAnalysis structures to and from other Python packages.

If you are converting to MDAnalysis, you can use the normal syntax for creating a Universe from files. Typically MDAnalysis will recognise which library it is dealing with, so you will not need to pass in a format keyword.

For example:

import MDAnalysis as mda
from MDAnalysis import GRO
import parmed as pmd

pgro = pmd.load_file(GRO)  # creates parmed structure
ugro = mda.Universe(pgro)  # you can just pass it in


If you are converting from MDAnalysis, use the convert_to() method. With this, you will have to specify a package name (case-insensitive).

pgro2 = ugro.atoms.convert_to('PARMED')  # converts back to parmed structure


Available converters