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I believe the original question is regarding light spectrum, in which case there is a relationship between the two.

Kelvin for light, is a measurement of the heat given off by a black body, which relates to the spectrum of light given off. Nanometers are a measurement of one specific wavelength of light (one specific color). Kelvin is a rating of all the colors existing in a light source, but it does give an indication of the nm peak within the spectrum. There is a formula, basically that nanometers=3000000/kelvin. Again, this is not a direct conversion, since these two quantities do not directly equate, but it will give you an idea of where a light source might be peaking, or at least the general color it will be predominant in.

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15y ago

What else can I help you with?