Reference sheet
Light (illuminance) conversion chart
Lux and foot-candles. Factors are given to 7 significant figures; open the converter for full precision and the worked solution.
| Unit | In lx | 1 lx in unit |
|---|---|---|
| lux (lx) | 1 lx | 1 lx |
| foot-candle (fc) | 10.76391 lx | 0.09290304 fc |
| phot (ph) | 10,000 lx | 0.0001 ph |
| fc | lx |
|---|---|
| 0.1 fc | 1.076391 lx |
| 0.5 fc | 5.381955 lx |
| 1 fc | 10.76391 lx |
| 2 fc | 21.52782 lx |
| 5 fc | 53.81955 lx |
| 10 fc | 107.6391 lx |
| 20 fc | 215.2782 lx |
| 25 fc | 269.0978 lx |
| 50 fc | 538.1955 lx |
| 100 fc | 1,076.391 lx |
| 250 fc | 2,690.978 lx |
| 500 fc | 5,381.955 lx |
| 1,000 fc | 10,763.91 lx |
| lx | fc |
|---|---|
| 0.1 lx | 0.009290304 fc |
| 0.5 lx | 0.04645152 fc |
| 1 lx | 0.09290304 fc |
| 2 lx | 0.1858061 fc |
| 5 lx | 0.4645152 fc |
| 10 lx | 0.9290304 fc |
| 20 lx | 1.858061 fc |
| 25 lx | 2.322576 fc |
| 50 lx | 4.645152 fc |
| 100 lx | 9.290304 fc |
| 250 lx | 23.22576 fc |
| 500 lx | 46.45152 fc |
| 1,000 lx | 92.90304 fc |
Formula: lx = fc × 10.76391042
Need another value? Use the fc to lx converter or the light (illuminance) converter.
Unitglide · unitglide.app/reference/light · Factors from NIST SP 811, NIST Handbook 44 and the BIPM SI Brochure (9th ed.). Values rounded to 7 significant figures unless exact.