All Music Tools
BPM Tap Tempo
Tap any key or click the button to detect BPM — with delay calculator and visual pulse
BPM to Delay Time Calculator
Convert any BPM to delay, reverb, and LFO timing in milliseconds — straight, dotted, and triplet values
Chord Transposer
Transpose chords and chord progressions to any key instantly
Interactive Circle of Fifths
Click any key to see scales, chords, progressions, and key signatures
Setlist Timer
Plan your music setlist with timing, breaks, and running timestamps
Streaming Revenue Calculator
Calculate how many streams you need to earn your target income across Spotify, Apple Music, Tidal, and more
Music tools on FastTools are free, browser-based utilities built for musicians, producers, and DJs. Every calculator runs entirely in your browser — your data never leaves your device.
Whether you're setting delay times, transposing chords, planning a setlist, or estimating streaming income, these tools are fast, accurate, and private. Pick any tool below to get started instantly.
Frequently Asked Questions
Are these music tools free?
Yes, every tool is completely free to use with no signup, no account, and no hidden fees.
Is my data safe?
Absolutely. All calculations run locally in your browser. No data is sent to any server or stored anywhere.
Do I need to create an account?
No. Every tool works instantly with no registration required. Just open and start using.