Skip to content
XUtilHub

Audio Converter – Convert to MP3, WAV, M4A, OGG, FLAC

Convert audio files between MP3, WAV, M4A (AAC), OGG (Opus) and FLAC in your browser. Choose the quality. Works with WMA, AMR and more. No upload.

  • Free, no sign-up
  • Runs in your browser, nothing uploaded

About the Audio Converter

Convert voice notes, music and recordings into the format you need, from WhatsApp OPUS and phone AMR to MP3, or lossless WAV and FLAC. Choose the bitrate for a balance of size and quality.

Key features

  • MP3, M4A, WAV, OGG and FLAC output
  • Reads OPUS, AMR, WMA, AAC and more
  • Choose the bitrate
  • Converts WhatsApp voice notes
  • Lossless options
  • Nothing uploaded

Convert audio to the format you need

Phone recorders, messaging apps and old devices all save audio in different formats. Convert voice notes, recordings and music into MP3 for compatibility, M4A for quality at a small size, or WAV and FLAC for editing.

Format guide

FormatTypeBest for
MP3LossyPlays everywhere
M4A (AAC)LossyBetter quality than MP3 at the same size; Apple devices
OGG (Opus)LossyVery efficient, great for voice
WAVLosslessEditing, maximum compatibility in audio software
FLACLosslessArchiving music at about half the size of WAV

Audio cutter, voice recorder and video to MP3.

How to use the Audio Converter

  1. Drop your file into the box, or click to choose one.
  2. Choose the options you want; the defaults suit most files.
  3. Click the button. The first time, the media engine (about a 9 MB download) loads once and is then cached.
  4. Wait for the progress bar, preview the result and download it. Your file never leaves your device.

Frequently asked questions

How do I convert a WhatsApp voice note to MP3?

Save or export the voice note (it's usually an .opus or .ogg file), drop it here and choose MP3. Voice notes sound fine at 96 or 128 kbps.

What's the difference between lossy and lossless?

MP3, M4A and OGG are lossy: they discard sounds you're unlikely to hear to make files much smaller. WAV and FLAC are lossless: they keep everything. FLAC is compressed lossless, about half the size of WAV.

Will converting MP3 to FLAC improve quality?

No. Converting can never restore detail that a lossy format already removed. Convert to lossless only from lossless sources, or when software requires a WAV or FLAC file.

Which format works on iPhone?

MP3, M4A (AAC) and WAV all play on iPhone. OGG and FLAC play in many apps but not in every built-in player.

Are my videos uploaded?

No. Every tool runs in your browser using ffmpeg.wasm and your browser's own recording features. Your files never leave your device, which also means there's no upload wait.

Why does the first conversion take longer?

The first time you use a conversion tool, your browser downloads the media engine (about 9 MB). It's then cached, so later conversions start straight away.

How big can files be?

Up to 1 GB. Processing speed depends on your computer: short clips take seconds, while long HD videos can take several minutes. A desktop browser is faster than a phone.

Is there a watermark or time limit?

No watermarks, no sign-up and no limits on how many files you process.

Last updated:

Related Audio & Video tools

Audio CutterNEW

Cut MP3 and other audio files with a visual waveform, add fade in and out, and save as MP3, WAV or an iPhone ringtone (M4R). Free, no upload.

Voice RecorderNEW

Record your voice in the browser with a level meter, pause and resume, then play it back and download it as MP3 or WebM. Free, no sign-up, nothing uploaded.

Screen RecorderNEW

Record your screen, a window or a browser tab with your microphone and system sound, in the browser. No watermark, no time limit, download as WebM or MP4.

Video to MP3NEW

Extract the audio from any video as MP3, M4A or WAV, in your browser. Works with MP4, MOV, MKV, WebM and AVI. No upload, no watermark, free.

Video CompressorNEW

Compress videos for WhatsApp, email and uploads. Reduce MP4, MOV and MKV file size with smart presets, in your browser with no upload and no watermark.

Video ConverterNEW

Convert MOV, MKV, AVI, WebM, FLV and 3GP videos to MP4, MOV, MKV or AVI in your browser. Fast mode changes the container without re-encoding. Free, no upload.

Trim VideoNEW

Cut the start and end off a video, or extract a clip. Preview, set start and end, and trim instantly without re-encoding, or frame-accurately. No upload.

Video to GIFNEW

Turn a short video clip into a high-quality animated GIF. Choose start, length, frame rate and width. Uses an optimised palette for small, sharp GIFs.