Audiogram maker

How to use the audiogram maker

1. 01Choose an audio file (MP3, M4A, WAV or AAC) or a video, up to 5 minutes long.
2. 02Pick square (1080 x 1080) or vertical (1080 x 1920), and type a title if you want one.
3. 03Choose the bar colour and the background colour.
4. 04Click Make audiogram, then download the video.

What the audiogram shows

The video runs at 30 frames per second. The 48 bars sit in a strip across the middle 80% of the frame, and each one shows the loudness of one thirtieth of a second of your sound, so the strip scrolls from right to left as the audio plays, with the moment you are hearing just right of centre. Bar heights are measured against the loudest moment in the clip, which reaches full height; silence shows as a small dot.

The bars show loudness, not pitch or individual frequencies, so speech and music both read as a rising and falling line of bars. The title, if you add one, sits at the top of the frame in your device's own sans-serif font, wrapped over up to four lines. It is drawn in white or near-black, whichever stands out against the background colour you chose.

Making a podcast audiogram

Pick a clip that makes sense on its own: a single answer, a strong opinion or a short story, rather than the middle of a longer exchange. The tool takes up to 5 minutes of sound, and the finished video is as long as the sound you give it, so trim the clip to the part you want before you start.

Vertical, 1080 by 1920, fills a phone screen held upright; square, 1080 by 1080, is just over half as tall. The title field takes up to 80 characters, enough for a show name and an episode number or a short quote. If your clip is from a video recording, you can use the video file directly: the tool takes its sound and replaces the picture with the waveform.

What happens to your sound

The picture is encoded to H.264 in an MP4 file. AAC sound, the usual sound in M4A files and MP4 videos, is copied into it as it is, with no loss of quality. MP3, WAV and other sound is re-encoded to AAC, which costs a small amount of quality that is usually hard to hear.

When your browser cannot make MP4, the tool makes a WebM file instead, with VP9 video and the sound copied if it is Opus or Vorbis, or re-encoded to Opus if not. Chrome or Edge can make MP4. Everything runs in your browser, so your audio never leaves your device.

Questions about the audiogram maker

What is an audiogram?

A short video that pairs a clip of audio with a moving picture of the sound, often with a title. Podcasters use them to share a clip in places built for video rather than audio.

Can I make an audiogram from a video file?

Yes. The tool uses the video's sound and draws the waveform in place of its picture. A video without a sound track cannot be used.

How long can the audio be?

Up to 5 minutes. For a longer recording, cut out the part you want first; the audiogram is as long as the sound you give it.

Is my audio uploaded?

No. The audiogram is drawn and encoded in your browser; your audio, and the finished video, never leave your device.

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Updated 1 October 2026 · All free tools