Nyquist Frequency
Find the highest representable frequency for a sample rate.
About Nyquist Frequency
Any frequency above half the sample rate cannot be represented and aliases back into the audible band. Choosing a sample rate and its anti-aliasing filter hinges on keeping every wanted frequency below the Nyquist limit.
Formula
Nyquist Frequency
Nyquist = sample rate / 2
- Nyquist
- Half the sample rate, the ceiling for accurate capture
Worked example
With the default values below, Nyquist Frequency returns Nyquist Frequency of 24,000. Change any input above and every figure here is recalculated in your browser.
Inputs used
- Sample rateaccepts 2,000–384,000 Hz
- 48,000 Hz
Results
- Nyquist Frequency
- 24,000 Hz
- Nyquist
- 24.0 kHz
- Sample Period
- 0.000021 s
Step by step
- 1Values used
- 2Nyquist Frequency
- 3Nyquist Frequency= 24,000 Hz
- 4Nyquist= 24.0 kHz
- 5Sample Period= 0.000021 s
Assumptions and limits
- The result is derived only from the single input listed above. Anything not among them is not part of the calculation.
- In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
- Figures are rounded for display to 6 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.
How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.
Frequently Asked Questions
How is Nyquist Frequency calculated?
Nyquist = sample rate / 2 Any frequency above half the sample rate cannot be represented and aliases back into the audible band.
Why does Nyquist Frequency matter?
Choosing a sample rate and its anti-aliasing filter hinges on keeping every wanted frequency below the Nyquist limit.
What values do I need to enter?
This calculator takes 1 input: Sample rate. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.