Volume Booster Online — Make Any Audio File Louder
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What is Volume Boosting?
Volume boosting increases the loudness of an entire audio file — every frequency gets amplified equally. It's the go-to fix for quiet recordings, voice memos recorded at arm's length, podcast episodes with inconsistent levels, and any track that's too quiet to hear comfortably on speakers or headphones.
Our volume booster measures loudness in LUFS (the industry standard used by Spotify, YouTube, and Apple Music) and lets you normalize to any platform target with one click. Or switch to manual mode for precise dB control. A built-in limiter prevents clipping at any level. Everything runs in your browser — your files never leave your device. Need just the low end louder? Try our Bass Booster instead.
How to Make Audio Louder
- Upload your audio — drop an MP3, WAV, OGG, FLAC, or M4A file (up to 50 MB).
- Choose boost mode — use Normalize to match platform loudness (Spotify at -14 LUFS, Apple Music at -16, etc.), or switch to Manual Boost for precise dB control.
- Preview and export — hit play to hear the boosted audio live, then export as a 320 kbps MP3.
Boost vs. Normalize: Which to Choose?
Manual Boost applies a fixed gain — you pick the dB amount, and the entire file gets louder (or quieter) by that exact value. Use it when you know exactly how much louder you want your audio.
Normalize measures your track's perceived loudness in LUFS (Loudness Units Full Scale, ITU-R BS.1770) and calculates the exact gain needed to match a platform target. Spotify and YouTube normalize to -14 LUFS, Apple Music to -16 LUFS, podcasts to -19 LUFS. Matching these standards ensures your audio plays at the intended volume without being turned down by the platform.
Best For
Quiet voice memos and phone recordings that are hard to hear. Podcast episodes with inconsistent volume levels. Social media audio that needs to compete with louder content in feeds. Music tracks that were mastered too quietly for your listening setup.
Frequently Asked Questions
Will boosting volume cause distortion?
No. Our volume booster includes a built-in limiter set at -1 dBFS that catches peaks before they clip. Even at +18 dB the output stays clean — the limiter compresses peaks that would otherwise distort.
What is audio normalization?
Audio normalization adjusts the gain so your track matches a target loudness measured in LUFS — a standard that reflects how loud audio sounds to the human ear. Unlike peak normalization (which just looks at the loudest sample), LUFS-based normalization ensures consistent perceived volume across tracks.
What is LUFS and why does it matter?
LUFS (Loudness Units Full Scale) measures how loud audio sounds to the human ear, not just its peak signal level. It's defined by ITU-R BS.1770 and used by every major streaming platform. Spotify and YouTube target -14 LUFS, Apple Music targets -16 LUFS. If your track is louder, they turn it down. If it's quieter, it sounds soft next to other content.
How do I normalize audio for Spotify?
Upload your file, select the Streaming preset (-14 LUFS), and export. This matches the loudness target used by Spotify, YouTube, Amazon Music, and Tidal. The tool measures your track's current LUFS and applies the exact gain needed.
What's the difference between Volume Booster and Bass Booster?
Volume Booster applies gain across the full frequency spectrum — everything gets louder equally. Bass Booster only amplifies low frequencies, leaving mids and highs untouched. Use Volume Booster to make a quiet file louder; use Bass Booster to add punch to the low end.
How loud can I make my audio?
Up to +18 dB in manual mode, or use Normalize to match platform loudness standards. The built-in limiter prevents clipping at any boost level.
What audio formats are supported?
MP3, WAV, OGG, FLAC, M4A, AAC, and WebM. The output is always a 320 kbps MP3 file.
Is my audio uploaded to a server?
No. All processing happens locally in your browser using the Web Audio API. Your files never leave your device.
How good is the audio processing quality?
We use the same techniques found in professional audio software: convolution reverb with real impulse responses, phase vocoder time-stretching, HRTF-based spatial audio, EBU R128 peak limiting, and LUFS loudness normalization. What you hear in the preview is exactly what you get in the export — we guarantee preview/export parity across every tool.