An LFO Rate Calculator helps producers, sound designers, musicians, and synthesizer users convert musical tempo into the correct modulation speed. LFO stands for Low Frequency Oscillator, a repeating signal commonly used to control effects such as vibrato, tremolo, filter movement, stereo panning, pitch modulation, and rhythmic volume changes.

Enter your song's BPM and choose a musical note division such as a quarter note, eighth note, sixteenth note, dotted note, or triplet. The calculator converts that timing into both Hertz (Hz) and milliseconds (ms).

Hertz tells you how many times the LFO completes a full cycle every second. For example, an LFO rate of 2 Hz completes two cycles per second. Milliseconds show the duration of each individual modulation cycle.

Tempo-synced LFO settings can help rhythmic effects move naturally with your track instead of drifting out of time. Slower rates are useful for gradual filter sweeps, evolving pads, and subtle stereo movement, while faster rates can create tremolo, vibrato, pulsing synths, and more dramatic modulation effects.

Dotted and triplet settings are especially useful when you want rhythmic movement that feels less predictable than standard straight note divisions.

Tip: Try syncing an LFO to eighth or sixteenth notes for rhythmic synth effects, then experiment with dotted and triplet values to create more interesting movement without changing your song's BPM.

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