SoundCuibu SoundCuibu

SoundCuibu — Free Online Audio Tools

Convert, trim, merge, boost volume, change pitch, normalize and edit audio — fast, free, no installation.

Browse all 22 tools Audio Converter Trim Audio MP4 to MP3
Fast & Free
All 22 tools are free. No account needed.
Privacy-First
Files deleted automatically within 12 hours.
No Installation
Works in any browser. Desktop and mobile.

Popular Tools

Audio Converter

Convert between MP3, WAV, FLAC, OGG, AAC, M4A and more.

MP4 to MP3

Extract audio track from any video file.

Audio Trimmer

Cut audio to exact start and end times.

Volume Booster

Increase or decrease audio volume in dB.

Normalize Audio

Balance loudness to EBU R128 standard.

Ringtone Maker

Trim any song to 40s and save as MP3.

Your All-in-One Online Audio Toolbox

SoundCuibu gives you 22 free browser-based audio tools. Convert audio between any format, trim tracks precisely, merge multiple files, adjust pitch and speed, normalize loudness, remove background noise, and analyse audio metadata — all without installing anything.

Convert
MP3, WAV, FLAC, OGG, AAC, M4A, OPUS. Extract audio from MP4/AVI/MOV.
Edit
Trim, merge, split, loop. Ringtone maker.
Effects
Volume, pitch, speed, reverse, fade in/out, bass boost.
Enhance & Analyse
Normalize, remove silence, reduce noise, view metadata, waveform.

More Tools

Merge Audio

Combine multiple audio files into one track.

Split Audio

Split a file into equal parts by duration.

Pitch Changer

Shift pitch up or down in semitones.

Speed Changer

Speed up or slow down audio (0.5x–4x).

Silence Remover

Automatically trim silence from start and end.

Waveform Generator

Generate a waveform PNG image from audio.

See all 22 audio tools →

Frequently Asked Questions

Do I need to install anything?
No. All tools run in your browser. Upload your audio file, process it, and download the result.
What audio formats are supported?
MP3, WAV, FLAC, OGG, AAC, M4A, OPUS, WMA for audio. MP4, AVI, MOV, MKV, WebM for video-to-audio extraction.
Is it free?
Yes, all 22 tools are completely free. File size limits may apply during peak usage.
How long are my files stored?
Files are stored temporarily and deleted automatically within 12 hours. For sensitive recordings use offline tools.
What should I do if a tool fails?
Try a smaller file or convert to MP3 first. If it keeps failing, contact us via the Contact form with the tool name, file format, file size, and exact error message.