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Photometry

lxtofc

Convert lux (lx) to foot-candles (fc).

Factor1 lx = 0.09290304 fc

Converter

lx

Accepts numbers or expressions, e.g. 150 + 14.7

Result
9.2903fc

Rendered to 6 significant figures.

Formula

Formula
fc = lx × 0.09290304

Multiply any value in lux by 0.09290304 to obtain the value in foot-candles.

Worked example

Convert 100 lx to fc.

  1. 01Start with 100 lx.
  2. 02Multiply by the conversion factor: 100 × 0.09290304 = 9.2903 fc.
Result100 lx = 9.2903 fc

Conversion table

lxfc
10.092903
20.18581
50.46452
100.92903
201.8581
504.6452
1009.2903
20018.581
50046.452
100092.903

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from lx to fc?
1 lx equals 0.09290304 fc. To convert, multiply the value in lux by 0.09290304.
How do I convert 1 lx to fc?
1 lx = 0.092903 fc. For any value, multiply by 0.09290304.
How do I convert fc back to lx?
Divide by the same factor — or equivalently, multiply by 10.76391. So 1 fc = 10.7639 lx.
When would I need to convert lux to foot-candle?
Illuminance conversions between lx and fc are used in lighting design, workplace safety assessments, and photographic exposure work. Lux is the SI standard for international codes; foot-candles remain common in US lighting specifications.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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