Foot-candles to Lux Converter
Quick answer: To convert foot-candles to lux, multiply by 10.76391. For example, 10 fc is 107.6391 lx. One foot-candle equals 10.76391 lx.
- Calculator
- Formula
- Examples
- Size compared
- About the units
- Step by step
- Popular conversions
- Reading your result
- Mistakes
- FAQ
- Related tools
- Method
Use the Foot-candles to Lux Converter
Foot-candles to Lux formula and what each symbol means
lx = fc × 10.76391
| Symbol | Meaning |
|---|---|
| fc | Foot-candle |
| lx | Lux |
Foot-candles to Lux examples
1 fc
1 fc × 10.76391 = 10.76391 lx.
10 fc
10 fc × 10.76391 = 107.6391 lx.
100 fc
100 fc × 10.76391 = 1,076.391 lx.
Foot-candles compared with Lux
One fc is 10.76 times as large as one lx, so your number gets bigger when you convert foot-candles to lux and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About foot-candles and lux
Foot-candle (fc): The foot-candle, one lumen per square foot, about 10.764 lx. Lux (lx): The lux, one lumen per square metre.
How to calculate Foot-candles to Lux step by step
- Enter the value in fc (the starting unit).
- Multiply by 10.76391, because 1 fc = 10.76391 lx.
- The product is the value in lx. To go back, divide by 10.76391 or multiply by 0.09290304.
Popular illuminance conversions
How to read your Foot-candles to Lux result
Quick estimate: multiply by about 10.8 to get lux from foot-candles; this is within 0.4% of the exact factor. Illuminance is luminous flux falling on a surface.
| FOOT-CANDLES | LUX |
|---|---|
| 1 | 10.76391 |
| 2 | 21.52782 |
| 5 | 53.81955 |
| 10 | 107.6391 |
| 20 | 215.2782 |
| 50 | 538.1955 |
| 100 | 1,076.391 |
| 1,000 | 10,763.91 |
Lux to Foot-candles: quick table
| LUX | FOOT-CANDLES |
|---|---|
| 1 | 0.09290304 |
| 5 | 0.4645152 |
| 10 | 0.9290304 |
| 25 | 2.322576 |
| 50 | 4.645152 |
| 100 | 9.290304 |
| 250 | 23.22576 |
| 500 | 46.45152 |
Common mistakes when calculating Foot-candles to Lux
- Mixing lux and foot-candles: 1 fc is about 10.76 lx.
- Dividing when you should multiply: from fc to lx multiply by 10.76391; from lx to fc divide by 10.76391.
Foot-candles to Lux FAQ
How many lx are in 1 fc?
1 fc equals 10.76391 lx.
How many fc are in 1 lx?
1 lx equals 0.09290304 fc.
Is 1 fc = 10.76391 lx an exact conversion?
The factor is shown rounded to 7 significant figures (10.76391). The calculator above uses more digits.
What is a foot-candle (fc)?
The foot-candle, one lumen per square foot, about 10.764 lx.
How can I estimate foot-candles to lux in my head?
Quick estimate: multiply by about 10.8 to get lux from foot-candles; this is within 0.4% of the exact factor.
What is 500 fc in lux?
500 fc = 5,381.955 lx (since 500 × 10.76391).
What is 15 fc in lux?
15 fc = 161.4587 lx (since 15 × 10.76391).
What is 75 fc in lux?
75 fc = 807.2933 lx (since 75 × 10.76391).
How many decimals should I keep when converting fc to lx?
Match the precision of your original measurement. For example, 107.6391 lx rounds to 108 lx at 3 significant figures; keep more digits only for engineering or scientific work.
More in Illuminance converters
- Phots to Kilolux Converter
- Kilolux to Lux Converter
- Phots to Foot-candles Converter
- Kilolux to Phots Converter
- Lux to Phots Converter
- Lux to Kilolux Converter
See all illuminance converters tools · All Conversion calculators · Site map
Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the International System of Units (SI)