Imaging Sensor SNR Calculator

Calculate signal-to-noise ratio for CCD, CMOS, and EMCCD imaging sensors with binning support.

Sensor Parameters
Signal
Detected signal (S)
90.00e⁻
Noise Breakdown
Shot noise (signal + dark)
9.49e⁻
Dark charge
0.010e⁻
Read noise contribution
3.00e⁻
Total noise
9.95e⁻
Signal-to-Noise Ratio
SNR (linear)
9.04
SNR (dB)
19.13dB
Dominant regime
Shot-noise limited
Abridged Optics — Imaging Sensor SNR Calculator v1.0SNR = S/√(S + I_d·t + σ_r²). EMCCD: F = √2 excess noise, σ_r,eff = σ_r/G.

All information, equations, and calculations have been compiled and verified to the best of our ability. For mission-critical applications, we recommend independent verification of all values. If you find an error, please let us know.