Spectral Irradiance Converter
Result:
Supported units
Convert between watt per square meter per nanometer (W/m²·nm), milliwatt per square meter per nanometer (mW/m²·nm), and watt per square meter per micrometer (W/m²·µm). Exact relationships are used, including 1 W/m²·µm = 1000 W/m²·nm.
Popular pairs
- W/m²·nm <-> mW/m²·nm
- W/m²·nm <-> W/m²·µm
How to use
Pick your from/to units using the search boxes, enter a value, and the result updates instantly. Use the copy button to grab the output.
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Spectral Irradiance Converter FAQ
Are the conversions exact?
Yes. We use exact scaling between W/m²·nm, mW/m²·nm, and W/m²·µm.
Can I convert between W/m²·nm and mW/m²·nm?
Yes. Enter your value in W/m²·nm and select mW/m²·nm as the target (or vice versa); results update instantly as you type.
Does this handle very small or very large spectral irradiance values?
Yes. You can convert down to mW/m²·nm or up to W/m²·µm with high precision using Decimal arithmetic.