Signal-to-Noise Ratio Calculator
Calculate the signal-to-noise ratio in decibels from signal and noise power.
How to Use the Signal-to-Noise Ratio Calculator
- Enter signal power in watts.
- Enter noise power in watts.
- Click Calculate.
- Review SNR in decibels and linear ratio.
使用场景
- •Telecommunications engineering
- •Audio signal processing
- •Radar system design
公式
SNR = 10 × log₁₀(P_signal / P_noise)
常见问题
How accurate is this calculator?
Results are based on standard scientific formulas and are suitable for preliminary estimates.
What units are used?
SI units (metres, kg, seconds) are used unless otherwise noted.
Is it free?
Yes, all calculators are completely free.