RF Signal to Noise Ratio Calculator

Calculate the Signal-to-Noise Ratio (SNR) to determine wireless signal quality and predict device connectivity issues.

Note: SNR is calculated as Signal - Noise. Higher values indicate better signal quality. A minimum SNR of 15-20 dB is recommended for reliable wireless connectivity.

📊 Results

Understanding Signal-to-Noise Ratio (SNR)

The Signal-to-Noise Ratio is a critical metric in wireless communications that measures the strength of the desired signal relative to background noise. It's calculated by subtracting the noise level from the signal strength (both in dBm).

SNR Quality Guidelines:

SNR Range Quality Expected Performance
40+ dB Excellent Maximum throughput, no packet loss
25-40 dB Very Good High throughput, minimal issues
15-25 dB Good Reliable connectivity, moderate throughput
10-15 dB Fair Basic connectivity, possible packet loss
5-10 dB Poor Unstable connection, frequent disconnects
< 5 dB Very Poor Unusable, connection failures