OpenNestFLAC to B64 Converter
Convert FLAC Audio to Base64 directly in your browser. Your files never leave your device — no uploads, no account, no tracking.
Choose files
or drag & drop here
100% local — your file never leaves this device.
How to convert FLAC to B64
Choose your FLAC file
Select a FLAC Audio from your device — click or drag & drop.
Pick B64 as the output
We auto-detect your file and show B64 as a recommended target.
Convert & download
Everything runs locally in your browser, then you download the result instantly.
Why use OpenNest to convert FLAC to B64?
100% local
Your FLAC file is converted entirely in your browser — nothing is uploaded.
Free & no account
No signup, no limits. Convert as many files as you need, on any device.
Private by design
No servers, no tracking, no logs. Close the tab and every trace is gone.
Supported input & output
| Input — FLAC Audio | .flac · audio/flac |
|---|---|
| Output — Base64 | .b64, .base64 · text/plain |
FAQ — FLAC to B64
Is FLAC to B64 conversion free?
Yes — completely free, no account, no signup, and no file limits.
Do I need to upload my FLAC file?
No. The conversion runs entirely in your browser; your file never leaves your device.
How do I convert FLAC to B64?
Select your FLAC file, choose B64 as the target, and click Convert. The result downloads instantly.
Is the output quality preserved?
Conversion is done locally with high-quality output, preserved to the extent the target format allows.