Key Commands

In this document, use Command (⌘) instead of Ctrl on Mac.

Global commands

Key commands documented in Rack’s menu bar are not documented here.

  • Enter or right-click on rack: Launch the Module Browser to add modules to the rack.
  • F1: Open Rack manual in your browser.
  • F3: Show/hide CPU meter.
  • F11: Enter/exit fullscreen.
  • Ctrl+0: Set rack zoom level to 100%.
  • Ctrl+-: Zoom out.
  • Ctrl+=: Zoom in.
  • Scroll: Scroll rack vertically.
  • Shift+scroll: Scroll rack horizontally.
  • Ctrl+scroll: Zoom in/out.
  • Middle mouse button drag: Pan rack view.
  • Arrow keys: Pan rack view. You can use Ctrl, Shift, or Ctrl+shift to change the speed of scrolling.
  • Ctrl+V: Pastes a new module at the cursor position, from the module context menu “Preset > Copy” or Ctrl+C.

Module commands

You must hover your mouse over a module to issue key commands for it. Key commands documented in the module context menu are not documented here.

  • Right click on panel: Open module context menu.
  • Click and drag on panel: Drag module in the rack.
  • Ctrl+click and drag on panel: Force-drag module. This moves other modules in order to place the dragged module.
  • Backspace or Delete: Delete module from the rack. You can hold this key while moving your mouse to delete multiple modules.

Parameter commands

A parameter is any knob, slider, button, switch, or other custom component that controls a module’s state.

  • Click and drag vertically: Adjust value. Hold Ctrl while dragging to move the knob slowly, Ctrl+shift to move very slowly, or Shift to move quickly.
  • Double-click: Reset to default value.
  • Right-click: Open parameter context menu. You can enter an exact value into the text field, or a mathematical expression. Normal mathematical expressions like 2+2, 2*2, 1/2, and 2^2 are evaluated into numerical values immediately upon pressing Enter. You can use constants and functions below, which are case-insensitive.
    • C, A#, Gb, etc: Frequencies in Hz of note names

    • C4, A#0, Gb7, etc: Frequencies in Hz of note names with octave numbers (C4 = middle C)

    • log2(x): Logarithm of x with base 2

    • gaintodb(x): Converts a gain/amplitude factor to decibel (dB) units.
      Example: gaintodb(1) = 0, gaintodb(0.5) = -6.0206, gaintodb(0) = -inf

    • dbtogain(x): Converts a decibel (dB) value to gain units.
      Example: dbtogain(20) = 10, dbtogain(0) = 1, dbtogain(-inf) = 0

    • vtof(x): Converts a 1V/octave value in volts to frequency in Hz, centered at middle-C (261.63 Hz).
      Example: vtof(0) = 261.63, vtof(-1) = 130.81

    • ftov(x): Converts a frequency value in Hz to 1V/octave value in volts.
      Example: ftov(440) = 0.75, ftov(c#4) == 0.083333