Light Sensor Meter

A simple light level meter that gives a very accurate (depending on the quality of your device and the sensors in it) and helpful visual aid.

Common Light Levels Outdoor

Condition Illumination

(ftcd) (lux)

Sunlight 10,000 107,527

Full Daylight 1,000 10,752

Overcast Day 100 1,075

Very Dark Day 10 107

Twilight 1 10.8

Deep Twilight .1 1.08

Full Moon .01 .108

Quarter Moon .001 .0108

Starlight .0001 .0011

Overcast Night .00001 .0001

Common and Recommended Light Levels Indoor

Activity Illumination

(lux, lumen/m2)

* Public areas with dark surroundings 20 - 50

* Simple orientation for short visits 50 - 100

* Working areas where visual tasks are

only occasionally performed 100 - 150

* Warehouses, Homes, Theaters, Archives 150

* Easy Office Work, Classes 250

* Normal Office Work, PC Work, Study

Library, Groceries, Show Rooms,

Laboratories 500

* Supermarkets, Mechanical Workshops,

Office Landscapes 750

* Normal Drawing Work, Detailed

Mechanical Workshops, Operation Theatres 1,000

* Detailed Drawing Work, Very Detailed

Mechanical Works 1500 - 2000

* Performance of visual tasks of low

contrast and very small size for

prolonged periods of time 2000 - 5000

* Performance of very prolonged and

exacting visual tasks 5000 - 10000

* Performance of very special visual

tasks of extremely low contrast and

small size 10000 - 20000

If you experience any issues please feel free to contact us with the description of the issue and type of phone you are using and we will do our best to help resolve your issue.

Thank you, have fun and enjoy.