ToolMulti
Your everyday online toolkit

Audio to FLAC

Batch convert audio files to FLAC lossless format. Supports multiple input formats with customizable sample rate and channels.

Tool Guide

Feature Introduction

Audio to FLAC tool batch converts various audio files to FLAC lossless compression format. FLAC (Free Lossless Audio Codec) maintains original quality while being about half the size of WAV.

Supported Input Formats

- MP3, WAV, AAC, OGG, FLAC, M4A, AC3, Opus, PCM

- Other browser-supported audio formats

How to Use

  1. Click the upload area or drag audio files to the page (multi-select supported)
  2. Configure sample rate and channel settings
  3. Click "Batch Convert to FLAC" button
  4. Wait for processing to complete
  5. Download individual files or the ZIP package

Notes

- FLAC is lossless compression, saves ~50% space compared to WAV

- Compatibility is good on modern devices