// Calculators › Signal & Power
Noise Figure Calculator
Calculate cascaded noise figure and gain for a multi-stage RF chain using Friis's formula. Add up to 8 stages — amplifiers, mixers, attenuators, filters.
// RF Chain Stages
Stage NameNF (dB)Gain (dB)
⚠ Please check your inputs — NF and Gain must be valid numbers.
// Results
Add stages and click Calculate