Free Online Audio Equalizer
Professional 10-band frequency control
Fine-tune your audio with precision using our professional 10-band equalizer. Choose from expertly crafted presets or customize individual frequency bands. All processing happens locally in your browser for complete privacy.
Upload Audio Files
Drag and drop your audio files here, or click to browse
Supports: Supports MP3, WAV, FLAC, AAC, M4A, OGG, and more
How It Works
Simple, secure, and professional audio equalization
Upload Audio Files
Drag and drop your audio files or click to select them from your device.
Choose EQ Settings
Select a preset or adjust individual frequency bands from 31Hz to 16kHz.
Process Audio
Our WebAssembly-powered engine applies equalization locally in your browser.
Download Equalized Files
Download your professionally equalized audio files individually or as a batch.
Why Choose Our Audio Equalizer?
Experience professional-grade audio equalization with cutting-edge browser technology
100% Private & Secure
All processing happens locally in your browser. No files are uploaded to our servers.
10-Band Equalizer
Precise control over 10 frequency bands from 31Hz to 16kHz with ±20dB range.
Professional Presets
9 expertly crafted presets: Flat, Rock, Pop, Jazz, Classical, Bass Boost, Treble Boost, Vocal, and Dance.
Master Gain Control
Apply overall volume adjustment after equalization with ±20dB range.
Anti-Clipping Protection
Built-in limiter prevents audio distortion when boosting frequencies.
Batch Processing
Process multiple audio files simultaneously with your custom EQ settings.
WebAssembly Powered
Lightning-fast processing using modern WebAssembly technology with FFmpeg.
No Installation
Works entirely in your web browser - no software downloads needed.
Related Audio Tools
Explore our other audio processing tools
Frequently Asked Questions - Audio Equalizer
What is an audio equalizer?
An audio equalizer (EQ) allows you to adjust the volume of specific frequency ranges in audio. Our 10-band equalizer divides the frequency spectrum into 10 bands, giving you precise control from deep bass (31Hz) to bright highs (16kHz).
What are the frequency bands?
Our 10 bands cover: 31Hz (Sub Bass), 62Hz (Bass), 125Hz (Bass/Low Mids), 250Hz (Low Mids), 500Hz (Mids), 1kHz (Mids), 2kHz (Upper Mids), 4kHz (Presence), 8kHz (Brilliance), and 16kHz (Air).
Which preset should I use?
Flat for no adjustment, Rock for powerful bass and crisp highs, Pop for modern bright sound, Jazz for warm smooth tones, Classical for natural balance, Bass Boost for enhanced low-end, Treble Boost for clarity, Vocal for speech, and Dance for electronic music.
What is the master gain control?
Master gain applies an overall volume adjustment after equalization. Use it to compensate for volume loss when cutting frequencies or to prevent clipping when boosting.
How does the limiter work?
The limiter prevents audio clipping by automatically reducing peak levels when they exceed -1 dBTP. This ensures your equalized audio remains clean and distortion-free, especially when boosting frequencies.
Is my audio file uploaded to a server?
No. All processing happens locally in your browser using WebAssembly technology. Your files never leave your device, ensuring complete privacy and security.
What audio formats are supported?
Our equalizer supports MP3, WAV, FLAC, AAC, M4A, OGG, and WebM formats. You can choose your preferred output format after processing.
Can I save my custom EQ settings?
When you adjust individual bands, the preset automatically switches to 'Custom'. These settings persist for your current session and are applied to all files you process.
What's the difference between boosting and cutting?
Boosting increases the volume of a frequency band (positive dB), while cutting decreases it (negative dB). Professional engineers often prefer cutting over boosting to maintain headroom and prevent distortion.
Can I process multiple files at once?
Yes! Upload multiple audio files and our batch processing system will apply your EQ settings to all files sequentially.