Signal Crest Factor Calculator
Compare a signal’s supplied peak and RMS amplitudes.
Your inputs
Calculation results
Formula & assumptions
Crest factor = peak/RMS; decibel crest = 20 log₁₀(peak/RMS).
Values use the specified units. Calculations use floating-point arithmetic. Check input measurements and formula assumptions before applying the result.
Compare your scenarios
Save up to five results to compare changes side by side. Scenarios stay in this tab until you clear or reload it.
Using Signal Crest Factor Calculator
Compare a signal’s supplied peak and RMS amplitudes.
- Enter peak amplitude, rms amplitude using the units printed under each field.
- Choose Calculate, or enable live updates. Review the result labels and formula assumptions.
- Save scenarios to compare up to five variations, then copy the report or download JSON or CSV.
Example
Peak amplitude: 0.9 linear units RMS amplitude: 0.2 linear units Crest ratio: 4.5 Crest factor · decibels: 13.06425
Questions & answers
What does Signal Crest Factor Calculator calculate?
Compare a signal’s supplied peak and RMS amplitudes.
Which units should I enter?
Peak amplitude uses linear units. RMS amplitude uses linear units. Convert values to these units before calculating.
Which formula does it use?
Crest factor = peak/RMS; decibel crest = 20 log₁₀(peak/RMS).
What does the included example show?
Peak amplitude: 0.9 linear units; RMS amplitude: 0.2 linear units. Result: Crest ratio = 4.5; Crest factor · decibels = 13.06425.
Can I compare different settings?
Yes. Save a scenario, change the inputs and save another result. Up to five scenarios are compared in this tab; they disappear when you reload or leave.
Can I export the calculation?
Copy the JSON report or download JSON and CSV with inputs, result labels and numeric values. Processing uses local JavaScript; no calculation request is sent to our server. Displayed values use up to 10 significant digits; exports retain JavaScript numeric precision.
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