File Conversions

Freeware/Shareware   Costware

Program Name/Link

Comments

Babel Babel will interconvert about 35 of very common file formats.
CDK The CDK classes are Java utitility classes for ChemoInformatics and Computational chemistry, written in Java. They are developed constantly developed parallel to other projects that make use of them. They are a complete re-write of the CompChem classes that were the basis of JChemPaint, a Java Editor for 2D chemical structures, and of JMDraw, a Java package for the graphical layout of 2D chemical structures.  Though not specifically designed for file conversion, the programs can read and write a variety of file formats,.
CLIFF The CACTVS File Converter is a powerful tool for the interconversion of more than 40 different chemical structure exchange file formats for compounds and reactions.
Mercury If you need to convert x-ray data in .cif format (e.g. as found in the Cambridge Crystallography Database), this site will convert them from .cif to pdb format.
Mol2Mol The current version of Mol2Mol recognizes, and interconverts about 50 different file formats (including subtypes).  By entering a format string practically every formats can be out/inputted.  It can slice multiple structural files to single ones (such as PDB models and vice versa in several variations. 
SMILES Translator This is an online SMILES string translator and can convert SMILES strings into SDF, PDB and MOL files.