FreeConverter.app was created by a team of passionate file-format experts in New Delhi, India. We help convert email archives and documents online, fast, secure and without desktop software install. For individuals, IT professionals and businesses.
We built FreeConverter.app because file-format conversion is rarely easy. To switch Outlook PST to EML, convert Lotus Notes NSF files or extract data from MBOX archives, you usually need special tools. Not everyone has the time or the money for complex desktop software.
Our platform is shaped by the feedback of everyday users: IT admins migrating mailboxes, small businesses switching email providers, home users needing to get a one-time conversion done right. All the tools on our site are based on these real scenarios, not on abstract feature lists.
We offer the most commonly required formats in email and document workflows from one-off file conversions to batch processing.
Browse all converters →Our team understands the technical underpinnings of each format we support.
PST, OST and MBOX are not just containers, they have folder structures, metadata, attachments and differences in encoding. Our converters are optimized for data integrity during migration from email clients such as Outlook, Thunderbird, Apple Mail.
We support legacy and enterprise formats such as IBM Lotus Notes NSF, Zimbra TGZ exports and Exchange related file types so organizations can move data without sacrificing structure or accessibility.
Every converter is tested extensively with sample files of different sizes and edge cases. We monitor conversion accuracy. We handle corrupt files gracefully. We update tools as format specs evolve.
FreeConverter.app is used by thousands of users in different countries and industries. We see our tools referenced in technical blogs, recommended by IT pros for quick mailbox exports, and embraced by businesses that require reliable format conversion without lengthy procurement cycles.
We support our community through support channels, product updates and educational content on our blog and we are active on professional networks.
We understand that we are entrusted with sensitive email archives and business documents. That responsibility influences the way we develop and run every aspect of our platform.
The steps are so self-explanatory that anyone can convert files without any technical training.
Whether you convert a single file or handle a large migration project, the results are the same.
Free online tools for business users of any size, anywhere in the world.
Proactive customer support and regular product updates based on your feedback.
Explore 100+ free online converters or get in touch with our support team.