Super Time Ultra

4:3 Polyrhythm Generator

Practice 4:3, 4 3, 4/3, 4 over 3, and 4 against 3 with a free online polyrhythm metronome, linear and circular visualizer, tempo control, MIDI export, and counting guide.

Circular online polyrhythm generator showing 3:2 and 4:3 pulse alignment

Use this free browser tool with no account required to hear 3:2, 4:3, 5:4, and custom cross-rhythms, tap tempo, compare circular and grid visualizations, export MIDI, share exact practice links, and download a polyrhythm practice pack.

What this online polyrhythm generator does

3:2 and 4:3 presets

Start with the common cross-rhythms musicians search for most, then move into 5:4, 7:5, and custom ratios.

Polyrhythm metronome

Set BPM, tap tempo, count-in, accents, swing, offset, volume, and separate base/counter pulse sounds.

Visual rhythm simulator

Switch between clock, timeline, LCM grid, bouncing ball, notation, and hands views.

Practice exports

Copy a preset link, export MIDI or MusicXML, save an image, or download a printable practice pack.

  • Hear the rhythm: separate base and counter sounds, mute controls, count-in, BPM, swing, and accents.
  • See the alignment: clock, timeline, LCM grid, bouncing ball, notation, and hands views.
  • Practice for real: ratio guides, shareable URLs, MIDI export, and printable practice material.

How to practice 3 against 2

  1. Set the generator to 3:2 at 80 to 100 BPM.
  2. Listen to the two-pulse side until the main beat feels grounded.
  3. Add the three-pulse side and watch the shared downbeat in the visualizer.
  4. Mute one side and keep the missing rhythm internally before speeding up.

How to count 5 against 4

A 5:4 polyrhythm uses twenty equal slots. The five-pulse rhythm lands every four slots, the four-pulse rhythm lands every five slots, and both meet again on the next downbeat.

Start around 60 to 80 BPM, hear the four-pulse side first, then add the five-pulse side until the long twenty-slot cycle feels relaxed.

Keep the generator free: Super Time Ultra is ad-free. The core browser tools are free. Web Pro checkout is not open yet. Existing supporters keep their access. Web Pro details.

Canonical page: supertimeultra.com/tools/polyrhythm/4-against-3