Tools for Producers
Browser-based utilities. No install, no account — open and use.
D-LAYCAL
Convert BPM to milliseconds, Hz and musical pitch for every note subdivision. Tap tempo, humanize mode and inverse calculator included.
SMPL-CAL
Calculate exact sample counts for drift-free audio loops. BPM to samples, inverse mode (samples → BPM), all note subdivisions and tap tempo included.
SPACECAL
Get tempo-synced pre-delay values for every note subdivision. Includes stereo L/R offset for wider reverb tails and material recommendations for vocals, drums, synth and pads.
TEMPOCAL
Smart tap tempo with outlier-filtered averaging, swing/groove detection, synced note subdivisions and one-click send to D-LayCal or SPACECAL. Press SPACE or tap the button.
NOTECAL
Convert any frequency to its note name, MIDI number and cents deviation. Reverse lookup: MIDI to Hz, note name to Hz. Full C0–C8 reference table with click-to-copy.
KEYCAL
Interactive Camelot Wheel for producers and DJs. Find compatible keys for mixing, sampling, and production. Lock any key to open the Mix Advisor.
CHORDCAL
Generate chord progressions by key, scale and genre. Lo-fi, trap, jazz, R&B presets. Piano preview + MIDI export. Free, no sign-up.
MELODYCAL
Generate original melodies by key, scale and genre. Configurable rhythm density, melodic movement, syncopation and motif repetition. Piano preview + MIDI export. Free, no sign-up.
BASSCAL
Generate professional bass lines for trap, boom bap, funk, house and more. Includes 808 glide/slide, walking bass patterns and chord-aware generation. MIDI export with pitch bend support.
DRUMCAL
Build genre-based drum grooves with lane-by-lane controls. Regenerate kick, snare, hats or percussion independently and export separate MIDI stems for each instrument.
FREQCAL
Interactive frequency reference chart. Explore EQ ranges for kick, bass, guitar, vocals and more. Hover for boost/cut tips, compare instrument clashes with Clash Mode.
LOUDCAL
Compare your master LUFS against Spotify, Apple Music, YouTube, Tidal, Amazon, TikTok and more. See exact normalization impact, True Peak warnings and platform-specific delivery checklists.
GLITCH ARCHITECT
Turn errors into sound design. Apply historical glitch behaviors like buffer underrun, bit reduction, packet loss, sample-rate mismatch and clock drift, with spatial Canvas Mode control.