File Converter

Convert text files to different formats

Click or drop a text file here

Convert to

About File Converter

File Converter is a free online tool that converts plain-text-based files between TXT, JSON, CSV, and HTML formats — entirely in your browser, with nothing uploaded to a server. It's a quick way to reformat text data or make it compatible with another tool or workflow.

How to use File Converter

1Click the upload area and select a text-based file (.txt, .csv, .json, .html, or .md).
2Choose your target format from the dropdown: TXT, JSON, CSV, or HTML.
3Click "Convert" to transform the file's content locally.
4Click "Download" to save the converted file.

Frequently Asked Questions

Is File Converter free to use?

Yes, it's completely free with no signup and no limit on how many files you can convert.

What formats does File Converter support?

Text-based formats only: it accepts .txt, .csv, .json, .html, and .md files, and converts between TXT, JSON, CSV, and HTML. It does not convert images, video, audio, or PDFs.

Is my file uploaded anywhere?

No. The conversion runs entirely in your browser — your file is never sent to a server.

How does the CSV conversion work?

It's a simple tab-to-comma replacement. For complex spreadsheet data with embedded commas or quotes, a dedicated spreadsheet tool will give more reliable results.

Tips & Tricks

✓JSON output wraps your file's text in a {"content": "..."} object rather than parsing it into structured data.
✓HTML conversion wraps your text in a basic <pre> tag — it won't add rich formatting or document structure.
✓For binary files like images, PDFs, or Word documents, use a format-specific converter instead — this tool works with plain text content only.
✓Double-check your file has one of the supported extensions (.txt, .csv, .json, .html, .md) before uploading.