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Convert FLAC to SPX

Convert FLAC to SPX format — 100% browser-based, no upload required.

2 cores · low tier

Drop a file here or click to select

Format will be auto-detected

About these formats

Source

FLAC

Free Lossless Audio Codec

Lossless audio compression reducing file size by ~50% while preserving perfect audio quality. Ideal for music archival.

Best for

Music archivalAudiophile collectionsLossless backupsHi-Fi audio

Advantages

  • + Perfect quality
  • + ~50% smaller than WAV
  • + Open source
  • + Metadata support

Limitations

  • Larger than MP3
  • Limited portable device support
Target

SPX

Speex Audio

Open-source speech codec designed for voice over IP. Provides good speech compression at very low bitrates.

Best for

VoIPVoice chatSpeech compressionPodcasts

Advantages

  • + Optimized for speech
  • + Open source
  • + Very low bitrate

Limitations

  • Superseded by Opus
  • Speech only
  • Declining usage