Free browser-based audio tools for finding and changing song key and BPM
Private audio tools for compression, conversion, and fading in your browser
Stage
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Founded
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Based in
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SG
Pricing model
Freemium
Free
Pricing
Free plan includes Key & BPM Finder and Changer, Audio Cutter and Joiner, BPM Tapper and Metronome, Voice Recorder, and local processing tools with files saved for 6 hours. Plus plan: $9.90/month with 1,000 credits per month and files saved for 7 days. Pro plan: $19.90/month with 2,500 credits per m
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Key features
Detect song tempo, musical key, scale and Camelot code
Change key and BPM independently and export as WAV
Cut and join audio segments
Record voice and tap beat timing
Practice with online metronome
Remove vocals from songs
Split songs into instrument stems
Enhance audio quality with AI
Convert audio to editable MIDI
MP3 bitrate conversion (128, 192, 256, or 320 kbps)
Fade-out audio with customizable duration
MP3 compression with file size comparison
WAV to MP3 and MP3 to WAV conversion
Fade-in audio with preview capability
M4A to MP3 conversion
Audio trimming with start and end time selection
Volume adjustment with gain in decibels
Stereo to mono conversion
Merge multiple audio files (2-8 files)
What makes it different
Process audio locally in browser without uploading to servers
No file storage or account required for free tools
All free tools with privacy-first design
Direct export from browser without server processing
All processing runs locally in your browser with no server uploads
No account or editor login required to use any tool
Preview results before downloading your final file
Key & BPM Lab
AudioEditorKit