Lux (lx) Unit Conversion Calculator

Lux (lx):

Lumens/m² (lm/m²):

Lumens/cm² (lm/cm²):

Phot (ph):

Lumens/ft² (lm/ft²):

Foot-candles (fc):

How to Convert Between Lux and Other Illuminance Units

Use the following conversion factors for illuminance units:

1 lx (lux) = 1 lm/m² (lumen per square meter)
1 lx = 10^-4 lm/cm²
1 lx = 10^-4 phot (ph)
1 lx ≈ 0.09290 lm/ft²
1 lx ≈ 0.09290 foot-candles (fc)

The calculator above automatically converts between all these units.

Conversion Tables

Lux (lx)	lm/cm²	Phot (ph)	lm/ft²	Foot-candles (fc)
1	0.000100	0.000100	0.092903	0.092903
2	0.000200	0.000200	0.185806	0.185806
3	0.000300	0.000300	0.278709	0.278709
4	0.000400	0.000400	0.371613	0.371613
5	0.000500	0.000500	0.464516	0.464516
6	0.000600	0.000600	0.557419	0.557419
7	0.000700	0.000700	0.650322	0.650322
8	0.000800	0.000800	0.743225	0.743225
9	0.000900	0.000900	0.836128	0.836128
10	0.001000	0.001000	0.929031	0.929031

Lux (lx)	lm/cm²	Phot (ph)	lm/ft²	Foot-candles (fc)
10	0.001000	0.001000	0.929031	0.929031
20	0.002000	0.002000	1.858063	1.858063
30	0.003000	0.003000	2.787094	2.787094
40	0.004000	0.004000	3.716125	3.716125
50	0.005000	0.005000	4.645156	4.645156
60	0.006000	0.006000	5.574188	5.574188
70	0.007000	0.007000	6.503219	6.503219
80	0.008000	0.008000	7.432250	7.432250
90	0.009000	0.009000	8.361282	8.361282
100	0.010000	0.010000	9.290313	9.290313

Using the Lux Unit Conversion Calculator

This calculator helps you convert illuminance measurements between different units including lux, lumens per square meter/cm²/ft², phot, and foot-candles.

Steps to use:

Enter the illuminance value in the input field.
Select the unit of your input value from the dropdown menu.
Click "Calculate" to get the results in all other units.

This tool is useful for lighting design, photography, architectural planning, and any application where illuminance measurements need to be converted between different unit systems.