Light & Imaging
Luminance, illuminance, luminous intensity, watts ↔ lumens by wavelength, image resolution and wavelength.
6 tools
- Luminance ConverterConvert luminance (brightness of a surface) — nits, cd/m², foot-lamberts, stilbs.
- Luminous Intensity ConverterConvert luminous intensity between candelas, millicandelas and candlepower.
- Digital Image Resolution ConverterConvert print and screen resolution — DPI, PPI, dots per centimeter and per meter.
- Frequency ↔ Wavelength ConverterConvert between frequency and wavelength of light or radio waves using λ = c / f.
- Radiometry ↔ Photometry Converter (W ↔ lm)Convert radiant power in watts to luminous flux in lumens (and back) for light of a chosen wavelength, using the CIE photopic V(λ) curve.