Shop by:   
Home / How to calculate lighting for a room

How To Calculate Lighting For A Room - Lighting Formula

Manual Room Lighting Calculator - A Simple Formula

Lighting History Lighting How To's Light Bulbs and Light Sources Lamp Styles, Lighting Styles Lighting Spaces
Lamp and lighting history How to Light Art

How to Light a Bathroom

How to calculate lighting for a room
Different kinds of light bulbs

LED lamp lighting basics
Track Rail Lighting

Create instant design using table lamps
Outdoor Home Lighting Guide

Four types of kitchen lighting

If you ever had difficulty figuring our how many light bulbs or how much lighting, outdoor lighting, ceiling lights, chandeliers, and other lighting sources it would take to light up an area such as your bedroom, kitchen, or patio, have no worries. There’s a neat and simple formula to calculate the amount of light or watts needed to properly lit up a given space.

Simply multiply the area’s square footage by 1.5.  This is the width and the length of the space, measured in feet, multiplied by 1.5.  The resulting number would be the amount of watts needed to light up a room properly.

How to figure out lighting for an area

how to calculate lighting for a room

Width x Length x 1.5 = Watts needed to properly light up a room.

For example, let’s figure out how much lighting a 15ft. by 10 ft. kitchen would need.

15 (width) x 10 (height) x 1.5 =  225 watts.

Therefore, the kitchen would need 225 watts of lighting in order to be properly lit.

For areas that require more lighting such as study rooms with those fancy table lamps, multiply the area’s square footage by 2.5 rather than 1.5.

by Mia Nguyen