Built in
Tools
Nine utilities that run entirely in this browser. Nothing is uploaded, nothing is stored.
BPM Tapper
Tap along to a track and read the tempo, average interval and tap count.
- BPM
- —
- Interval
- —
- Taps
- 0
BPM Transition Calculator
Difference, pitch percentage and a transition recommendation between two tempos.
- Difference
- 4.0
- Pitch on A
- +3.23%
- Verdict
- Blend with care
Noticeable pitch shift. Move the tempo gradually across a phrase.
Half / Double BPM
Convert a tempo to its half and double time for open-format mixing.
- Half time
- 70.0
- As played
- 140.0
- Double time
- 280.0
Camelot Wheel
Interactive wheel: pick a key, see every compatible move and what it does.
Outer ring: major (B). Inner ring: minor (A). Colour tracks the number, so neighbours on the wheel are neighbours in hue. Click or tab to a key.
Selected
8A A min
- Same keyIdentical key. Layer freely.
- +1 · energy upOne step clockwise. Lifts the mix.
- -1 · energy downOne step anticlockwise. Softens the mix.
- Relative majorSame number, other letter. Changes mood, keeps the notes.
- +7 · energy boostA semitone up in practice. Big lift, use once a set.
- DiagonalWorks often, not always. Test it before the gig.
Key Converter
Musical key to Camelot and Open Key notation, and back.
- Camelot
- 8A
- Musical
- A min
- Open Key
- 1m
- Pitched +0
- 8A
Harmonic Compatibility Checker
Two keys in, a verdict out — with the reason it works or does not.
8A → 9A · +1 · energy up
One step clockwise. Lifts the mix.
Set Duration & Track Count
How many tracks fill a slot at a given average track length.
- Tracks needed
- 19
- Bring (2× crate)
- 38
Each track effectively occupies 3.3 minutes once blends overlap.
Recording Storage Calculator
File size for a recorded set at any sample rate, bit depth or bitrate.
- WAV
- 2.07 GB
- MP3 320
- 288 MB
Gig Timeline Generator
Turn a set time and length into a phase-by-phase plan you can print.
- 23:00–23:18Open18 minSet the tempo floor. Nothing you cannot follow.
- 23:18–23:41Build23 minLift energy one notch at a time. Hold the groove.
- 23:41–00:08Peak27 minYour strongest material. Do not start here.
- 00:08–00:21Reset14 minOne deliberate dip so the next lift lands.
- 00:21–00:30Close9 minLand it. Leave one record they will look up.