How is lumen calculation

If the space is non-rectangular, estimate the equivalent rectangular dimensions. Width of room, in linear feet Length of room, in linear feet Ceiling height, in linear feet square feet, 8 foot ceilings What are your brightness needs? Brightness needs will depend the activity or work being performed in the space, as well as personal preference.

Input your brightness needs, in footcandles:. The reflectance of your walls will also play a role in the total amount of lighting needed. Spaces with walls of lighter colors will require less light. Lumen Estimation Calculator Knowing how many lamps you need to adequately illuminate a room or space can be tricky. Thank you in advance. Hi Scott, You divide by 6 fixtures to get the needed lumen level per fixture.

Thank you for this helpful article. Does this apply to any type of LED lights or only to downlights? Hi Elizabeth, Good question! The suggestion is for recessed downlight layout designs.

This is great information. My wife and I are struggling right now trying to get the right lighting in a home we bought. We just recently had installed 4x LED can lights but we are unsure of the Lumens but are pretty certain it is not enough.

Our estimation is … Read more ». I have a sq ft large party room an almost square space with ft ceilings slight vault. The walls are a light color.

If my fixtures each provide lumens, how many fixtures will I need? Hi Kathy! Reference the chart in the post. Aim for 30 foot candles with … Read more ». Thanks very much for this resource! I am trying to light a basement art studio that has no natural light. Your calculator says I … Read more ».

You could also add an adjustable ceiling mount spot light or a directional floor lamp. What kind of lighting is best for overhead tube light in kitchen….

Cool, Warm, Bright? A cooler, K light color temperature serves as a better work light. In this case, cooking or baking. I understand this is rough estimate as there are other factors. What a wonderfully well-written, informative piece. So clear, so brilliantly explained….. Thank you for such crystal clear text and the usefull tool available that allow us to do quick calculations.

I found this article while researching about IES profiles for a game developer. Hi David, This is such a helpful and well-written blog entry. Perhaps you can offer me a suggestion.

I am looking for a lamp for a bedside table, specifically to have enough light to be able to do light reading or paperwork eg, paying bills before going to sleep. I … Read more ». I just wanted to say what an absolute gem of a website you have here. I live abroad and am not able to purchase from yourselves, but just wanted to say thank you for such as awesome blog and help. Hi, you should check the calculator on this page — the output for meters compared to feet is way off.

First let me say how grateful I a that I found this blog — your explanation of how to determine the total amount of light required for a rec room I am building was easy to understand and has moved me significantly closer to understanding how many led pot light … Read more ».

Hi John, Great questions. Is there a conversion factor to be used when making LED bulb … Read more ». David Thank you for the prompt replies as I expect you are a rather busy person! I think I understand what you are saying about beam spread…..

All Rights Reserved. About Insights About Alcon Lighting. How much light is enough? Related Posts. David P Hakimi Alcon Lighting creative director and co-founder David Hakimi works to achieve efficiency in lighting, affording architects and lighting designers and engineers the ability to maximize ideal lighting. Share 0. Pin The Art of Lighting Art.

Lighting Technology: What is Color Tuning? Connect with. I allow to create an account. The amount of light needed to properly illuminate a task or process can vary by application.

The Illuminating Engineering Society IES recommends illumination levels for hundreds of specific applications in industrial settings. This article explains how to determine lighting needs by looking at lux and lumens. You can also calculate lux to lumens using the tool below. The lux to lumens calculator below will help you choose the illumination solution that best meets the specific requirements of your application.

Banner Engineering offers a number of high-quality, energy-efficient LED lighting products that can be used to solve a diverse range of industrial applications. Lux : The amount of light that is cast on a surface is called illuminance , which is measured in lux.

This can be thought of as light intensity within a specific area. Lumens : The total output of visible light from a light source is measured in lumens. Typically, the more lumens a light fixture provides, the brighter it is. Essentially, as light travels from the emitter, it will disperse throughout an area. The further the light has to travel the more it will be dispersed. Therefore, the amount of lux in an area or on a surface can vary depending upon the distance the light travels and the angle at which it is dispersed.