Get the precise Hz frequency of any musical note across every octave, with custom A4 reference (440, 432, 442 Hz) and cents detuning support.
| Note | Frequency (Hz) | MIDI | Period (ms) |
|---|
Equal temperament: f = A4 × 2^((midi − 69) / 12). Each semitone is 2^(1/12) ≈ 1.0595×. Cents are 1/100 of a semitone: a +c cents shift multiplies by 2^(c/1200).
MIDI note 69 = A4. C4 (middle C) is MIDI 60.
BPM to Milliseconds Delay Calculator
Convert BPM to milliseconds, Hz and seconds for every note value — 1/1 down to 1/64 triplets and dotted notes.
Sample Rate & Bit Depth File Size Calculator
Estimate audio file size from sample rate, bit depth, channels and duration for WAV, AIFF and FLAC.
Loop Length Calculator (Bars to Seconds)
Convert bars or beats to seconds or samples at any BPM and time signature for perfect loops.
Sidechain Compression Timing Calculator
Calculate sidechain attack and release times in ms synced to BPM and note divisions for pumping mixes.
