Peak wavelength to kelvin
Type a value in nm to get it in K instantly.
9,659.24K
That's 1.67× as hot as the Sun’s surface — nothing on our list beats it. It radiates about 493,600,000 W from every square meter.
Convert the other way: K to nm
What it means
How much does it radiate?
These are for a perfect black body. A real surface radiates its emissivity times as much — around 0.95 for skin and paint, 0.05 for polished metal.
The math
How to convert nm to K
Two laws at once: W/m² = 5.670 × 10⁻⁸ × T⁴ for the power, and peak nm = 2,897,772 ÷ T for the color.
Example: 300 nm = 9,659.24 K.
Every unit
Your temperature in every unit
Tables
nm to K conversion table
| nm | K |
|---|---|
| 3 nm | 965,924 K |
| 100 nm | 28,977.7 K |
| 288 nm | 10,061.7 K |
| 300 nm | 9,659.24 K |
| 500 nm | 5,795.54 K |
| 1,000 nm | 2,897.77 K |
| 2,000 nm | 1,448.89 K |
| 3,000 nm | 965.924 K |
| 5,778 nm | 501.518 K |
| 10,000 nm | 289.777 K |
K to nm conversion table
| K | nm |
|---|---|
| 3 K | 965,924 nm |
| 100 K | 28,977.7 nm |
| 288 K | 10,061.7 nm |
| 300 K | 9,659.24 nm |
| 500 K | 5,795.54 nm |
| 1,000 K | 2,897.77 nm |
| 2,000 K | 1,448.89 nm |
| 3,000 K | 965.924 nm |
| 5,778 K | 501.518 nm |
| 10,000 K | 289.777 nm |
Quick answers
Quick answers
- How many K is 1 nm?
- 1 nm is 2,897,770 K.
- How many K is 10 nm?
- 10 nm is 289,777 K.
- How many K is 300 nm?
- 300 nm is 9,659.24 K.
The units
About these units
Peak wavelength (nm)
Where the spectrum peaks, by Wien’s law.
Kelvin (K)
Absolute temperature, which is what the law needs.
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