Volume Booster
Boost audio volume by up to 3× — amplify quiet recordings in your browser.
Volume Booster
How to use Volume Booster
Follow these steps — everything happens instantly in your browser.
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Step 1. Drop an audio file (MP3, WAV, M4A, OGG).
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Step 2. Drag the slider to set the boost gain (1× to 3×).
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Step 3. Click 'Boost & download' — the audio is processed locally.
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Step 4. Download the amplified WAV file.
Why use this tool
Private by design
All processing happens locally in your browser. Open DevTools → Network and you'll see zero file uploads. Ever.
Instant
No upload wait, no queue, no server round-trip. Results appear the moment you drop a file.
Free & unlimited
No accounts, no watermarks, no daily caps. Use it as many times as you like, forever.
Works everywhere
Desktop, tablet or phone — every tool is responsive and installable as a PWA for offline use.
Frequently asked questions
Everything you might want to know about volume booster.
Audio Normalizer
Normalize audio to a target peak level — consistent volume every time.
Equalizer
Boost or cut 5 frequency bands — hear the effect with a built-in test tone.
Audio Merger
Join multiple audio files into one — drag to reorder, then merge to WAV.
Reverse Audio
Reverse any audio file — plays backward, great for sound design and effects.
