lux, foot-candle, phot, nox.. Illuminance Converter is a free online tool from the ToolsRift Special Unit Converters collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.
Type an illuminance in any field. It converts to lux with the unit factor, then fills the other illuminance units instantly.
1 fc equals 10.7639104167 lux — one lumen per square foot versus per square metre.
The lux (lumen per square metre) is the base; all other units convert through it.
1 phot equals 10,000 lux (1 lumen/cm²), a CGS illuminance unit.