Signal-to-Noise Ratio Calculator
SNR from Power
Convert dB to Linear
Formula
SNR (dB) = 10 × log₁₀(P_signal / P_noise)
Frequently Asked Questions
What is a good SNR?
It depends on the application. For Wi-Fi: 25+ dB is good. For audio recording: 60+ dB is professional quality. For digital communications: 10+ dB is often sufficient. Higher SNR means cleaner signal with less noise interference.
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