Noise Temperature Calculator
Calculate equivalent noise temperature, noise power, and thermal noise floor for RF systems.
Calculation Mode
Te = T0 x (F - 1)
P_noise = k x Te x B
Noise Temperature
288.6 K
Noise Figure: 3.000 dB
1.9953
Noise Factor
290
Ref Temp (K)
Noise Power
Noise Power (dBm)-114.00 dBm
Noise Power (dBW)-144.00 dBW
Noise Power (W)3.985e-15 W
Thermal Floor @ T0-113.98 dBm
Common Noise Temperatures
| Source | Te (K) |
|---|---|
| Clear Sky (Zenith) | 10 |
| Quiet Sun | 20,000 |
| Moon | 210 |
| Cosmic Background | 2.7 |
| Atmosphere (Horizon) | 290 |
| Ground (Earth) | 290 |
| Urban RF Noise | 5,000 |
NF to Temperature Table
| NF (dB) | Te (K) |
|---|---|
| 0.5 | 35.4 |
| 1 | 75.1 |
| 2 | 169.6 |
| 3 | 288.6 |
| 5 | 627.1 |
| 7 | 1163.4 |
| 10 | 2610.0 |