Signal to Noise Ratio Calculator

Signal to Noise Ratio Calculation


Signal to Noise Ratio (SNR) Calculator is an online statistics tool to calculate how much a signal may corrupted by unwanted noise and contains meaningful information.

Signal-to-noise ratio is also called as SNR or S/N, is defined as the ratio of signal power to the noise power which measures the original signal corruption. It's a defining factor when it comes to measure the quality of signal in communication channels or mediums. A higher SNR guarantees the clear acquisitions with low distortions and artifacts caused by unwanted noise. The better ratio of SNR cause the better signal stand out, makes the better quality of original signal or transmitted information signals. S/R ratio measurement is commonly used in the field of science and engineering fields. A ratio higher than 1 indicates more signal strength.


The below mathematical formula used in statistics to calculate the signal to noise (S/N) ratio to find the quality of signal
SNR = Psignal/Pnoise = μ/σ
μ is the signal mean or expected value
σ is the standard deviation calculation of the noise

While working with the field of tele-communications or radio communications or optical communications, sometimes, this SNR ratio may required to design & tweak the circuits. The SNR can be calculated by the above statistics formula, however, this signal to noise ratio calculator may useful to perform & verify such calculations quick as possible to analyze & summarize the statistical data.