Convert MP3 → FLAC Online — Free
Convert MP3 to FLAC lossless format.
Drag & drop or click to browse
Accepts .mp3 files up to 100 MB
Free plan includes 10 conversions/day. Need more? Talk to us →
What is a .mp3 file?
MP3 is a widely-used format in the Audio category. Convert MP3 to FLAC lossless format. Files in this format are commonly used across various tools, pipelines, and workflows.
What is a .flac file?
FLAC is a popular format in the Audio ecosystem. Converting from MP3 to FLAC gives you access to its unique features, broader tooling support, and improved interoperability.
How to convert MP3 → FLAC online
Upload your file
Drag & drop your .MP3 file onto the upload zone, or click "Browse" to select it.
Validate & preview
The tool checks the file type and size before uploading. Invalid files are rejected immediately with a clear error.
Convert on the server
Click "Convert" to upload and process your file. Server-side conversion typically takes ~45 seconds.
Download your result
When done, click "Download .FLAC" to save your converted file. Files are securely deleted after 1 hour.
Frequently asked questions
Is this MP3 to FLAC converter free?
Yes. The MP3 → FLAC tool is free for up to 10 conversions per day. Pro (100/day) and Business (unlimited) plans unlock higher limits.
Is my file secure on the server?
Your file is uploaded over an encrypted HTTPS connection to a secure server worker. The converted file is stored temporarily and automatically deleted after 1 hour. We never share or store your files longer than necessary.
What is the maximum file size for MP3?
You can convert files up to 100 MB. If your file is larger, consider compressing it first or upgrading to a Business plan for increased limits.
What is the difference between MP3 and FLAC?
MP3 and FLAC are both formats in the Audio category, each with different use cases, tooling support, and feature sets. Convert MP3 to FLAC lossless format.
Can I convert multiple files at once?
Batch conversion is available on Pro and Business plans. Free users convert one file at a time.