ToolGPT

Convert audio to MP3, WAV, FLAC and more by asking

Attach a song, a voice memo or a podcast episode and tell ToolGPT which format you need. It reads the file, chooses settings that match the quality of your source, and converts it in your browser. You download the new file from the chat, and the original stays as it was.

  • Runs in your browser
  • No sign-in needed
Drop or choose your filesThe assistant opens with your files and does the rest.Choose Files
Things you can type
interview-raw.wav
Open ToolGPTAttach a file and describe what you need.

What it can do

  • Eight output formats

    MP3, WAV, FLAC, OGG, Opus, AAC, M4A and AIFF. Name one, or say where the file is going and let the assistant suggest one.

  • Real MP3 files

    Browsers cannot write MP3 on their own. ToolGPT brings its own FFmpeg build, so the result is a genuine MP3.

  • Quality that follows your source

    Unless you name a bitrate, MP3 and the other compressed formats follow the quality of the original, within 96 to 320 kb/s.

  • Your settings when you want them

    Ask for a specific bitrate or sample rate, such as 192 kbps or 48 kHz, and ToolGPT uses it where the format allows.

  • Several files at once

    Attach several files and ask once. Each file is converted as its own job.

How it works

  1. 1

    Attach the audio file

    Drop the file into the ToolGPT chat, or choose it with the + button. You can begin without an account.

  2. 2

    Name the format

    Say which format you need, and add a bitrate if you have one in mind. You can also describe the device or app the file is for.

  3. 3

    Download the converted file

    The new file appears as a card in the chat with a download button. Your source file is left unchanged.

Choose a format by what you need

MP3 plays on almost every phone, car stereo and computer, so it is the usual choice for sharing. M4A and AAC are common on Apple devices. OGG and Opus give compact files for the web.

WAV, AIFF and FLAC are for editing and archiving. ToolGPT writes WAV and AIFF as 16-bit PCM, the same depth as an audio CD. FLAC keeps every detail too, in a smaller file than WAV.

Converting changes the format, not the sound. It will not make a low-quality recording sound better, and it does not change the volume.

Quality settings, handled for you

When you do not name a bitrate, ToolGPT reads the bitrate of your file and carries that quality across. A 128 kb/s AAC file becomes a 192 kb/s MP3, because MP3 needs more data for similar quality, and a modest file is not pushed up to the maximum for no gain.

MP3 allows sample rates up to 48 kHz. A 96 kHz studio file converted to MP3 therefore comes out at 48 kHz instead of failing. If a file holds more than one audio track, such as two languages, ToolGPT converts the first one, which is usually the track players use by default.

Converted on your device

The conversion runs in your browser with a WebAssembly build of FFmpeg. The assistant needs only basic details about the file, such as its name, length and size, to choose the settings.

About 2 GB per file is the practical limit, because the browser reads the whole file. Long recordings take longer on older devices, and a progress bar shows how far along the job is.

Frequently asked questions

Is there anything to install?

No. The converter runs inside the browser tab, so there is nothing to download or install.

Which formats can I convert to?

Eight formats: MP3, WAV, FLAC, OGG, Opus, AAC, M4A and AIFF. Choose by where the file is going.

Will converting to WAV or FLAC improve the sound?

No. A lossless format keeps the sound exactly as it is in your file. It cannot bring back detail that an earlier MP3 encoding removed.

Is my audio uploaded?

No. The file is converted in your browser. Your chat messages go to the AI assistant, but the audio itself stays on your device.

Try it with your own file

Open ToolGPT, attach a file, and type what you want done.

Open ToolGPT

Conversions

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