Room Lighting Calculator

Information

Evaluating room illumination is paramount for determining the number of fixtures needed, selecting the appropriate bulbs, and achieving the ideal brightness for your space. Regulatory agencies enforce lighting standards and may impose penalties for non-compliance. Accurately assessing luminous intensity is therefore essential to avoid fines and create a productive, well-illuminated environment.

This online Room Lighting Calculator for LED fixtures streamlines the process even for non-specialists. By entering the room’s dimensions and other critical parameters, you can effortlessly calculate the required lumens and choose the optimal LED lamps. The tool precisely computes both the total light output and the luminous flux for each fixture.

Features of the Online Calculator

This intuitive LED lighting calculator offers six input fields and provides two key results. It calculates the necessary room illumination as well as the luminous flux per fixture, and its results can be conveniently saved as a PDF or printed with a single click.

How the Calculator Works

Follow these steps in the calculator menu to perform an accurate room lighting computation:

Select the room type.
Set the standard illumination level in lux, either automatically or manually.
Enter the room’s dimensions (length, width, and height in meters) in the designated fields.
Input the number of lighting fixtures.

Once you provide these details, the calculator displays the following results:

Total required room illumination in lumens.
Necessary luminous flux per fixture in lumens.

Key Concepts

Illumination – the ratio of luminous flux incident on a surface to the area of that surface, measured in lux.

LED Fixture – a modern lighting device that incorporates an LED and a driver (a power converter that transforms AC to DC), delivering energy-efficient and effective illumination.

Luminous Flux – a measurement indicating the amount of light energy emitted in a radiation flux per unit time across a specific area, expressed in lumens.

Methods for Calculating Room Lighting with LED Fixtures

Determining the appropriate illumination for a room using LED fixtures is a fundamental aspect of lighting design. The calculation takes into account the room’s dimensions, its intended function, the type of fixtures used, and standard illumination requirements. Various methods are available to ascertain the optimal number and placement of fixtures, ensuring that the desired light intensity is achieved.

Table 1. Lighting standards for various room types.

№	Residential and Communal Areas	Standard Illumination (lux)
1	Living Rooms	150
2	Children's Rooms	200
3	Kitchens	150
4	Corridors, Bathrooms, & Toilets	50
5	Dressing Rooms	75
6	Pantries	30
7	Stairwells & Staircases	20
8	Elevator Areas	20
9	Attics & Basements	20
10	Main Entrance Areas (Porches)	5

Table 2. Conversion of LED Lamp Power to Light Output.

№	LED Lamp Power (Watts)	Light Output (Lumens)
1	2–3	250
2	4–5	400
3	8–10	700
4	10–12	900
5	12–15	1200
6	18–20	1800
7	25–30	2500

Room Lighting Calculator