Free Audio Tools for Producers
Browser-based tools that process your files locally. No upload, no signup, no cost.
Most popular
LUFS Checker
Measure integrated loudness (LUFS), true peak, and loudness range. Check compliance with Spotify, Apple Music, YouTube, and more.
Delay Time Calculator
Calculate delay times synced to your BPM. Normal, dotted, and triplet values for every note division.
Reverb Pre-Delay Calculator
Find the optimal reverb pre-delay and decay time for your BPM and room size.
BPM Tap Tool
Tap spacebar or click to detect tempo. Get genre suggestions and copy BPM to clipboard.
BPM Detector
Detect the BPM of any song from an audio file. Automatic tempo detection with genre suggestions.
Key Detector
Detect the musical key and Camelot code. Find compatible keys for harmonic mixing.
Frequently Asked Questions
Are these tools really free?
Yes. All six tools are completely free with no signup, no account, and no usage limits. Your files are processed locally in your browser. Nothing is uploaded to our servers.
Do my audio files get uploaded anywhere?
No. The BPM detector, key detector, and LUFS checker all process audio using the Web Audio API in your browser. Your files never leave your device.
What audio formats are supported?
The file-based tools (LUFS checker, BPM detector, key detector) support MP3, WAV, FLAC, AAC, OGG, and any format your browser can decode. The calculators and BPM tap tool don't require audio files.
How are these different from UpTrack's full analysis?
These tools measure individual aspects of your track. UpTrack's full analysis reads level, tonal balance, width and mono, arrangement, and groove together against genre-specific references, gives a readiness state, then matches your track to 700+ labels with demo contacts.
Want a Complete Mix Analysis?
These free tools measure one thing at a time. UpTrack's full analysis reads your entire mix across five contributors, calibrated to your genre, tells you how ready it is to send, then matches you to 700+ labels with active demo contacts.
5 free analyses • No credit card required