Audio Volume Changer
Adjust the volume and loudness of audio files
Upload Audio File
Supports MP3, WAV, OGG, FLAC, AAC, M4A
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How to Use
Upload Your File
Drag and drop your file or click to browse. Your file stays in your browser.
Adjust Settings
Configure options to get exactly the result you need.
Download Result
Process and download your file instantly — no waiting, no server upload.
Why Use This Tool
100% Free
No hidden costs, no premium tiers — every feature is free.
No Installation
Runs entirely in your browser. No software to download or install.
Private & Secure
Your data never leaves your device. Nothing is uploaded to any server.
Works on Mobile
Fully responsive — use on your phone, tablet, or desktop.
Your Files Stay Private
This tool processes your files entirely in your browser. Nothing is uploaded to any server — your data never leaves your device.
- No server upload — 100% client-side processing
- No data stored — files are discarded when you close the tab
- No account required — use instantly without signing up
Understanding Audio Volume and Gain
Key Takeaways
- Volume adjustment multiplies sample amplitude by a gain factor — 1.0 is original, 0.5 is half, 2.0 is double.
- Digital audio clips (distorts) when amplitude exceeds 0 dBFS, so boosting volume requires care.
- Loudness normalization ensures consistent volume across multiple files for a professional experience.
Adjusting audio volume is a fundamental editing operation. Whether you need to boost a quiet recording, reduce a loud track, or normalize volume across files, understanding how digital gain works helps you achieve professional results. This tool processes volume changes entirely in your browser using the Web Audio API.
+10 dB
≈ 2× perceived loudness
Common Use Cases
Normalizing Quiet Recordings
Boost volume of recordings made with the microphone too far away or input gain set too low, rescuing otherwise unusable audio.
Podcast Volume Consistency
Ensure all segments play at consistent volume, especially when combining tracks from different recording setups.
Background Music Mixing
Lower background music to sit beneath narration at the right level, typically 15–20 dB below the voice track.
Preparing Audio for Video
Adjust audio levels to broadcast standards before combining with video. Streaming platforms have specific loudness requirements.
Volume Adjustment Tips
Avoid boosting beyond 150% — excessive gain amplifies noise and can introduce clipping distortion.
If a recording is extremely quiet, re-recording is better than heavy digital boost, which raises the noise floor.
Use preview to listen before exporting, and watch for clipping indicators.
For consistent volume across files, normalize to the same peak (-1 dBFS) or loudness target (-16 LUFS).
All volume processing is performed entirely in your browser. No audio data is uploaded to any server.