Iluminância
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The illuminance calculator is a useful tool for determining the amount of light that falls on a surface. Illuminance, measured in lux (lx), is calculated by dividing the luminous flux, measured in lumens (lm), by the surface area, measured in square meters (m²). This is expressed by the formula: illuminance (lx) = luminous flux (lm) / area (m²).
Illuminance is an important measure in various fields, such as architecture, engineering, and interior design. It helps ensure that spaces are adequately lit, whether for specific tasks, such as reading or working, or for creating cozy and pleasant environments. The illuminance calculator is useful for professionals and students who need to perform quick and accurate calculations.
When using the illuminance calculator, it is essential to consider the correct units of measurement and ensure that the entered values are realistic and accurate. Additionally, it is crucial to remember that illuminance can vary depending on the light source, distance, and surface orientation. With the illuminance calculator, it is possible to obtain quick and accurate results, saving time and effort.
Illuminance is a measure that can be used in various situations, such as evaluating natural lighting in an environment, determining the amount of light needed for a specific task, or comparing the efficiency of different light sources. With the illuminance calculator, it is possible to perform these calculations quickly and easily.
Frequently asked questions
What is illuminance?
Illuminance is the measure of the amount of light that falls on a surface, expressed in lux (lx).
How to calculate illuminance?
Illuminance is calculated by dividing the luminous flux (in lumens) by the surface area (in square meters).
What are the units of measurement for illuminance?
Illuminance is measured in lux (lx).
When to use the illuminance calculator?
Use the illuminance calculator to determine the amount of light needed for a specific task or to evaluate natural lighting in an environment.
What are the precautions when using the illuminance calculator?
Make sure to use the correct units of measurement and enter realistic and accurate values.