BSON (Binary JSON) is the native binary format MongoDB utilizes to store files, document schemas, and network transactions. Because it uses binary data formats, humans cannot read it directly. Our converter parses Hex and Base64 dumps of BSON records, translating binary integers, strings, arrays, and booleans into human-readable JSON entirely inside browser sandbox memory.
About BSON to JSON Converter
Inspect binary BSON (Binary JSON) records from MongoDB or network streams using standard hex dumps or base64 streams. It's built for moving structured data between formats without a build step, runs instantly, and works on any device — no install, no sign-up.
How to use BSON to JSON Converter
Paste or type your input into the editor on the left.
Leave the defaults, or tweak them if the tool exposes options.
The result appears instantly on the right — everything runs in your browser, so nothing is uploaded.
Copy the output, or download it, and you're done.
Why use BSON to JSON Converter?
Fast and local — the transform happens in your browser, so there's no round-trip and no waiting.
Private by default — your input never leaves your device.
Accurate — the same, well-tested logic powers both this page and the public API.
Free — unlimited use in the browser, with an optional API for automation.
Use it from the API
Everything this page does is also available as a REST endpoint, so you can call BSON to JSON Converter from your own code, a script or a CI pipeline.
The endpoint returns a JSON envelope ({ ok, data, meta }) and costs 1 credit per successful call. Try it in the playground or browse the full API reference.
Frequently asked questions
Is BSON to JSON Converter free to use?
Yes — use it in the browser as much as you like. The optional API has a free tier and pay-as-you-go pricing for heavy or automated use.
Is my data private?
Yes. BSON to JSON Converter runs entirely in your browser — your input never leaves your device and nothing is logged or stored.
Can I automate BSON to JSON Converter?
Yes — call the bson-to-json API endpoint from any language and script it into your workflow.