Free Stacking Signal-to-Noise Calculator
Estimate the signal-to-noise improvement from stacking multiple exposures: SNR_total = SNR_single * sqrt(n).
Stacked SNR
50.0000
Improvement Factor10.0000 x
Stacked SNR vs Single-Frame SNR
Signal-to-Noise Improvement from Stacking
Stacking multiple exposures averages out random noise while the signal adds coherently.
Formula
SNR_total = SNR_single * sqrt(N)
Doubling the SNR requires four times as many frames. This is the square-root law of signal averaging.
Example Calculation
Stack 100 frames each with SNR = 5.
- 01SNR_total = SNR_single * sqrt(N)
- 02SNR_total = 5 * sqrt(100)
- 03SNR_total = 5 * 10 = 50