Why convert to increase audio volume online?

Audio recorded too low? Increase the gain up to +20 dB directly in the browser and download the corrected file.

What if I need the text of this audio?

After converting, you can transcribe the file with AI on VoxScriber: 30 free minutes per month, with automatic punctuation and speaker identification. Ideal for WhatsApp audios, meetings, and interviews.

Is the Increase Audio Volume Online really free?

Yes, free and unlimited. The processing happens in YOUR browser (WebAssembly), so we have no server cost — and you don't need to create an account.

Is my file uploaded to any server?

No. All processing is local (FFmpeg compiled to WebAssembly running on the page). The file never leaves your device — it even works offline after the page loads.

Is there a size or quantity limit?

The limit is 300 MB per file (browser memory). There is no limit on number of uses. For larger files, VoxScriber processes on the server with uploads up to 5 GB.

Does it work on mobile?

Yes — any modern browser (Chrome, Safari, Firefox, Edge) on desktop or mobile. On older phones, large files may take longer.

±20 dB · MP3/OGG/M4A/WAV · Free · No Upload

Increase Audio Volume Online — up to +20 dB Free

Increase volume of low recorded audio (or reduce clipping) directly in your browser. Free and private.

Drop your file here or click to select

Processed in your browser — up to 300 MB. Nothing is uploaded.

100% local processing: your file never leaves your device.

Formatos suportados: Files .mp4 up to 300 MB — processed locally

Resultado em segundos

100% em português do Brasil

Privacidade garantida

Sem instalação

Como funciona

Upload the audio

Any common format, up to 300 MB.

Adjust the gain

From -20 dB to +20 dB. For low-recorded voice audio, +6 to +10 dB usually fixes it without distortion.

Download the corrected audio

The MP3 with the new volume is ready in seconds.

Perguntas frequentes

Need the text of this audio? Transcribe with AI — 30 min free

Criar conta gratuita →

30 minutos/mês grátis. Sem cartão de crédito.

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