Sampling Rate ↔ Nyquist Frequency Calculator
Enter sampling rate to instantly calculate Nyquist frequency and sampling period.
Nyquist Calculator
MHz
ns
Formulas
Nyquist Sampling Theorem
fₛ ≥ 2 × f_signal
Nyquist Frequency
fₙ = fₛ / 2
Sampling Period
Tₛ = 1 / fₛ
For alias-free signal reconstruction, the sampling rate must be at least 2× the highest signal frequency. Practical ADCs often oversample by 1.5–4× to simplify anti-aliasing filter design.
Quick Reference
| fₛ | fₙ | Tₛ |
|---|---|---|
| 10 GSa/s | 5 GHz | 100 ps |
| 1 GSa/s | 500 MHz | 1 ns |
| 250 MSa/s | 125 MHz | 4 ns |
| 100 MSa/s | 50 MHz | 10 ns |
| 44.1 kSa/s | 22.05 kHz | 22.7 μs |