Noise temperature to noise factor
Type a value in K to get it in F instantly.
1.003F
Nothing on our list is smaller: a cryogenic amplifier is 1.02× noisier. That is an equivalent noise temperature of about 1 K.
What it means
How quiet is that receiver?
Everything here is referred to 290 K, the standard reference temperature. A receiver pointed at cold sky sees far less noise than one pointed at the ground.
The math
How to convert K to F
Noise figure and temperature are two readings of the same thing: T = 290 × (10^(NF ÷ 10) − 1), and back again NF = 10 × log₁₀(1 + T ÷ 290).
Example: 1 K = 1.00345 F.
Every unit
Your noise in every unit
Tables
K to F conversion table
| K | F |
|---|---|
| 0.1 K | 1.00034 F |
| 0.3 K | 1.00103 F |
| 0.5 K | 1.00172 F |
| 1 K | 1.00345 F |
| 1.5 K | 1.00517 F |
| 2 K | 1.0069 F |
| 3 K | 1.01034 F |
| 5 K | 1.01724 F |
| 7 K | 1.02414 F |
| 10 K | 1.03448 F |
| 15 K | 1.05172 F |
F to K conversion table
| F | K |
|---|---|
| 1.02 F | 5.8 K |
| 1.07 F | 20.3 K |
| 1.12 F | 34.8 K |
| 1.26 F | 75.4 K |
| 1.41 F | 118.9 K |
| 1.58 F | 168.2 K |
| 2 F | 290 K |
| 3.16 F | 626.4 K |
| 5.01 F | 1,162.9 K |
| 10 F | 2,610 K |
| 31.6 F | 8,874 K |
Quick answers
Quick answers
- How many F is 1 K?
- 1 K is 1.00345 F.
- How many F is 10 K?
- 10 K is 1.03448 F.
The units
About these units
Noise temperature (K)
The temperature a resistor would need to make that much noise.
Noise factor (F)
The linear ratio behind the decibels.
Keep going