• 🎚️ Limiter Calculator

    Estimate limiter gain reduction, threshold overshoot, output peak, and remaining digital headroom from your peak level, threshold, ceiling, and input gain settings.
    Enter the highest measured peak before the limiter.
    Gain added before the limiting stage.
    Level above which limiting begins in this simplified model.
    Maximum permitted output peak.
    Estimated Maximum Gain Reduction
    —
    Peak After Input Gain
    —
    Above Threshold
    —
    Estimated Output Peak
    —
    Headroom to 0 dBFS
    —
    Estimated Gain Reduction

    Limiter Gain Reduction Reference

    Gain Reduction General Interpretation
    0–1 dB Very light peak control
    1–3 dB Moderate limiting
    3–6 dB Noticeable peak reduction
    6+ dB Heavy limiting; listen carefully for artifacts
    How the Limiter Calculator works:

    First, the calculator adds the selected input gain to the original peak level. This estimates how high the signal would reach before limiting.

    It then compares that driven peak with both the limiter threshold and output ceiling. The amount above the threshold shows how far the signal has entered the limiting region.

    The estimated maximum gain reduction represents the amount of attenuation required to keep that peak from exceeding the selected ceiling.
    Important: This calculator provides a simplified peak-based estimate. A real limiter's behavior also depends on its attack, release, lookahead, knee, detection method, oversampling, true-peak processing, program material, and internal design. Actual gain reduction should always be checked inside your limiter.

  • A Limiter Calculator helps musicians, producers, mixing engineers, and mastering engineers estimate how a peak signal may interact with a limiter. Enter the current peak level, input gain, limiter threshold, and output ceiling to estimate the driven peak, amount above the threshold, maximum gain reduction required to respect the ceiling, and remaining digital headroom.

    A limiter is designed to control peaks by reducing the level when the signal reaches its limiting region. Adding input gain before a limiter pushes the audio harder into that processing. For example, a signal peaking at -6 dBFS with +6 dB of input gain would theoretically reach 0 dBFS before limiting.

    If the limiter has an output ceiling of -1 dBFS, approximately 1 dB of attenuation would be required at that peak to prevent the resulting sample peak from exceeding the selected ceiling in a simplified brickwall model.

    Actual limiter behavior can be more complicated. Attack, release, lookahead, knee, oversampling, true-peak detection, stereo linking, transient shape, and the audio itself can all affect the amount and sound of limiting.

    Also remember that a sample-peak ceiling is not automatically the same as a true-peak ceiling.

    Tip: Do not choose limiter settings based only on a target number. Watch the actual gain-reduction and true-peak meters while listening for changes in transients, punch, distortion, pumping, and overall dynamics. More gain reduction is not automatically better or louder-sounding in a useful way.

    Related Pages:

    How Loud Should Vocals Be In A Mix?

    Gain Vs. Volume - Is There Really A Difference?