# How many lights are needed in a room calculator?

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## How do you calculate how many lights are needed?

To calculate the lighting lumens (formerly wattage) needed in any 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.

## How many can lights in a 20×20 room?

If you have a center light fixture, you should be able to use 4 inch line voltage cans or low voltage for supplemental lighting. I would go with at least 8 three inch cans for a 20 foot room.

## How do you calculate lighting in a room?

Multiply the width by the length for each room or room segment, if applicable. Multiply the result by 1.5 to determine the estimated watts to sufficiently light a room. For example, for a room 10 feet wide by 12 feet long, multiply 10 times 12 to get 120, then multiply by 1.5 to get 180 watts.

## HOW LONG CAN LED strip lights stay on?

LEDs have an unbelievably long expected life-span, compared to both incandescent and fluorescent lights. With an average life-expectancy of some 50,000 hours, LED strip lights will still be burning bright in 17 years’ time, long after their traditional counterparts will have expired.

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