## How do you calculate foot candles?

Calculation Cheat Sheet:To calculate Lumens (Lux) from foot-candles: Lumens = Foot Candles x 10.76.To calculate Watts from foot-candles: Watts = Lumens x 0.001496.You can also calculate the number of watts directly from foot-candles by combining both equations & using the following: Watts = Foot Candles x 0.01609696..

## How many foot candles do I need for a parking lot?

The horizontal luminance shall have an average maintained one foot-candle with a minimum level of 0.25 foot-candle on the parking lot surface from dusk until termination of normal business hours.

## How many lumens is a 30×40 shop?

For example, a 40-watt fluorescent bulb puts out about 2,200 lumens. A 60-watt incandescent bulb puts out about 800 lumens. Likewise, how many lumens is a 30×40 shop? 30X40=1200sqft X 100 Lu = 120000 /2600 = 46 T8 32W tubes or 12 4 tube fixtures.

## How bright is 40 foot candles?

In some areas, foot-candles will be higher than 40, and in other areas, it will be lower, but it will average out at 40. You’d need a fixture or multiple fixtures combined that will give you about 40 lumens of light per square foot.

## How many foot candles do I need in an office?

20 foot candlesOffices and Indoor Spaces A requirement of 20 foot candles is recommended for general spaces in offices. In areas where reading and detailed tasks are carried out, 50 foot candles of lighting is sufficient.

## How many foot candles of light do I need?

To determine the needed lumens, you will need to multiply your room square footage by your room foot-candle requirement. For example, a 100 square foot living room, which needs 10-20 foot-candles, will need 1,000-2,000 lumens. A 100 square foot dining room, which needs 30-40 foot-candles, will need 3,000-4,000 lumens.