Convert MSG to JSON
Free, fast MSG → JSON. No watermarks, no sign-up.
How to convert MSG to JSON
1. Upload MSG
Drop your MSG file into the converter above.
2. Confirm JSON
Output is already set to JSON. Adjust only if you need to.
3. Download
Convert and download your JSON file instantly.
Format Details
MSG
MSG is Microsoft Outlook's proprietary format for saving individual email messages, meeting requests, contacts, and tasks as standalone files. Unlike the standard EML format, MSG files use Microsoft's Compound Document File Format and require Outlook or a compatibility library to fully decode. MSG files preserve all rich formatting, embedded images, attachments, and complete email metadata, and are widely used in enterprise email archiving and legal discovery.
documentJSON
JSON (JavaScript Object Notation) is a lightweight, human-readable data interchange format derived from JavaScript object literal syntax. It natively supports objects, arrays, strings, numbers, booleans, and null, allowing it to represent arbitrarily nested data structures. JSON has become the universal standard for REST API responses, configuration files, and data interchange on the web, with native parsing support in virtually every programming language.
dataConverting MSG to JSON: what actually changes
MSG to JSON is one of the conversions this site performs, but the two formats are not interchangeable containers. Here is what the file keeps, what it loses, and how to get a result you can use.
What .MSG and .JSON each hold
.MSG is a document format built for reading, printing or circulating a document, storing text, layout, fonts and images. .JSON is a data format built for analysing, importing or exchanging records, storing rows, columns and value types. Converting between them is a decision about which of those two jobs the result needs to do.
What changes when categories differ
The file is parsed and its contents are written out as structured data for analysing, importing or exchanging records. Everything that could be extracted from the source lands in the output; formatting and styling that have no equivalent in .JSON are left behind.
When this conversion is the right one
Reach for .JSON when you need a file for analysing, importing or exchanging records, starting from reading, printing or circulating a document. If that is not what you are after, check what else .MSG converts to before committing to this target.
Tips for a clean MSG to JSON conversion
Start from the original file
Convert the .MSG you started with, not an earlier .JSON output. Every extra round trip costs quality and can accumulate formatting drift.
Check the real type, not the extension
Application/vnd.ms-outlook becomes application/json. If a file was renamed rather than converted, it will fail to open — rename it back to its true extension before uploading and the conversion will recognise it.
Long documents convert as pages
Page-based output renders one page at a time. Split very large .MSG files first if you only need a specific section — it is faster and keeps the result easy to work with.
Limits worth knowing
Uploads are capped per file (30 MB, or 100 MB for video) and processed temporarily — nothing is kept as a permanent copy. For huge document files, split or compress the source first.
Frequently Asked Questions
How do I convert MSG to JSON?
Upload your MSG file on Convertek, select JSON as the output format, then click Convert. Your JSON file will be ready to download instantly.
Is the MSG to JSON converter free?
Yes. Converting MSG to JSON on Convertek is completely free with no watermarks. Fair upload limits apply (typically 30 MB per file).
Is my file kept after conversion?
No. Files are processed temporarily and not stored permanently. Converted downloads are available only in your browser session.
What is the difference between MSG and JSON?
MSG and JSON are different file formats with distinct use cases. Converting between them lets you use your file in software or workflows that require the JSON format.