Volume Booster
Free online audio volume booster and normalizer. Increase volume up to 300%, normalize loudness for consistent audio levels. Supports MP3, WAV, OGG, AAC. No software installation required.
About Volume Booster & Normalizer
This online audio volume booster allows you to increase the volume of your audio files or normalize their loudness directly in your browser. Choose between boost mode to amplify volume by a specific amount, or normalize mode to achieve consistent loudness levels. All processing happens locally for complete privacy.
What audio formats are supported?
Input: MP3, WAV, OGG, AAC, M4A, and other common formats. Output: You can choose to keep the same format as input or convert to MP3, WAV, OGG, or AAC.
What is the difference between Boost and Normalize?
Boost mode increases volume by a fixed multiplier you choose (e.g., 2x doubles the volume). Normalize mode intelligently adjusts the audio to a standard loudness level using EBU R128, making it consistent with other normalized audio files. Use Boost for simple volume increase, use Normalize for professional loudness matching.
Will boosting volume cause distortion?
If you boost too much (especially above 2x or 200%), the audio may clip or distort, especially if the original audio is already loud. Start with moderate boosts like 1.5x (50%) and increase if needed. Normalize mode prevents clipping by intelligently adjusting dynamics.
What is the file size limit?
The maximum file size is 50MB. This ensures smooth processing in your browser. For larger audio files, consider using desktop audio editing software.
How does normalization work?
Normalization uses the loudnorm filter based on EBU R128 standard, which measures perceived loudness rather than peak levels. It analyzes your audio and adjusts it to -16 LUFS (Loudness Units Full Scale), the standard for broadcast and streaming. This ensures consistent volume across different tracks.
Can I preview before downloading?
Yes! You can play the original audio to hear how it sounds, then after processing, preview the boosted or normalized version before downloading.
Is my audio file safe?
Absolutely! All audio processing happens directly in your browser using FFmpeg.wasm (WebAssembly). Your audio file is never uploaded to any server. Everything stays private on your device.
What quality settings should I use?
Use 'High' (320kbps for MP3) for best quality. Use 'Medium' (192kbps) for balanced quality and file size. Use 'Low' (128kbps) for smaller file sizes when quality is less critical.
How long does processing take?
Processing time depends on your audio file length and device performance. A typical 3-minute audio file takes 10-20 seconds to process. Normalization may take slightly longer as it analyzes the entire audio first.
Can I use this for music, podcasts, or voice recordings?
Yes! This tool works perfectly for any audio type. Boost mode is great for quiet recordings or music. Normalize mode is ideal for podcasts, audiobooks, or music playlists where you want consistent volume levels.