Crest Factor Formula

Crest factor=Peak value of signal-Rms value of signal
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What is crest factor?

Crest factor—sometimes called peak-to-average ratio—is the difference in decibels between the peak and average levels of a signal. In the strictest technical sense, it only applies to steady-state signals like sine, square, saw, or triangle waves. Crest factor is an important parameter to understand when you're trying to take accurate measurements of low-frequency signals. For example, suppose you have a digital multimeter with an AC accuracy of 0.03%, which is always specified for sine waves, and an additional error of 0.2% for crest factors between 1.414 and 5.0. If you're measuring a triangular wave, which has a crest factor of 1.73, then the total error using this multimeter would be 0.23% (0.03% + 0.2%).

How to Calculate Crest Factor?

Crest Factor calculator uses Crest factor=Peak value of signal-Rms value of signal to calculate the Crest factor, Crest Factor is the ratio of the peak voltage value that an average reading or root-mean-square voltmeter will accept without overloading to the full-scale value of the range being used for measurement. Crest factor and is denoted by CF symbol.

How to calculate Crest Factor using this online calculator? To use this online calculator for Crest Factor, enter Rms value of signal (Xrms) and Peak value of signal (Xpeak) and hit the calculate button. Here is how the Crest Factor calculation can be explained with given input values -> 80 = 100-20.

FAQ

What is Crest Factor?
Crest Factor is the ratio of the peak voltage value that an average reading or root-mean-square voltmeter will accept without overloading to the full-scale value of the range being used for measurement and is represented as CF=Xpeak-Xrms or Crest factor=Peak value of signal-Rms value of signal. Rms value of signal is the root-mean-square value of a signal. For a digitized signal, it represents the average "power" of a signal and Peak value of signal is the maximum value attained by an alternating quantity during one cycle. It is also known as the maximum value or crest value.
How to calculate Crest Factor?
Crest Factor is the ratio of the peak voltage value that an average reading or root-mean-square voltmeter will accept without overloading to the full-scale value of the range being used for measurement is calculated using Crest factor=Peak value of signal-Rms value of signal. To calculate Crest Factor, you need Rms value of signal (Xrms) and Peak value of signal (Xpeak). With our tool, you need to enter the respective value for Rms value of signal and Peak value of signal and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
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