# How many lumens do I need per square foot calculator?

## How many lumens do I need per square foot calculator?

Lumens calculation summary Multiply your room square footage by the footcandle requirement. For example, a 100-square foot living room, which needs 20 footcandles, will need 2,000 lumens. A 100-square foot dining room, which needs 40 footcandles, will need 4,000 lumens 2 (see PDF and complete footcandle index).

## How do you calculate lumens per room?

To estimate the number of lumens your space will need, just multiply the square footage of your room by the number of foot-candles required for the space. For example, for a bathroom that is 64 square feet with a foot-candles range of 70-80, you’ll need from 70×64 to 80×64 lumens, or 4480 – 5120 lumens.

Can I put LED bulbs in my t5?

Plug and Play, or direct wire, LED T5 lamps make switching from fluorescent to LED simple. These bulbs are easy and quick to install. Replacing the ballast in your current fixture won’t be necessary, as it plugs directly into the fixture without any rewiring.

How do you calculate the number of lights?

Calculation in 8 steps

1. Total wattage of fixtures: Total wattage of fixtures = Number of lamps x each lamp’s watt. Total wattage of fixtures = 2 × 32 = 64 Watt.
2. Lumen per fixtures. Lumen per fixtures = Lumen efficiency (Lumen per Watt) x each fixture’s watt. Lumen per fixtures = 85 x 64 = 5440 Lumen.
3. Number of fixtures.

### How many lumens do I need for a 20×20 room?

So, let’s say it is a 20 x 20 ft room, giving us 400 sq ft. And let’s say you have a six-light pendant using 9W LED bulbs that put out 840 lumens each. 840 x 6 = 5,040 lumens. Dividing the lumens by the square footage, you find you’re getting about 13 lumens-per-square-foot (5,040 ÷ 400 = 12.6).

### How do you calculate lighting loads?

General lighting and receptacle loads Table 220.12 in the National Electrical Code considers a residence a listed occupancy at 3 VA per square foot; therefore, the general lighting load is determined by multiplying the square footage. For example, 2,800 square feet times 3 VA is 8,400 VA.

How do you calculate lighting for a room?

Multiply width of room x length of room x 1.5 = amount of total minimum wattage needed (assuming an eight foot ceiling). Divide by 60 to get the number of 60-watt equivalent bulbs required. Then, add up the wattage in each bulb in each fixture to figure out how many light fixtures are needed.

How much area does a T5 light cover?

around 4ft x 2.5ft
These reflectors can give you around 4ft x 2.5ft of light coverage.