How Many Lumens For Desk Lamp? [Best Lighting Choice 2023]

Nowadays, a desk lamp is an indispensable tool for many people, because it helps people in learning as well as at work. In particular, they are convenient for people when integrated with multiple functions. So How many lumens for desk lamp

This is always a question that is concerned by many consumers and also a factor that will affect your eyes and productivity.

In this article, we will help you answer the question “ How many lumens for desk lamp” and some essential factors when choosing a desk lamp.

What is Lumen?

Lumen is a measure of the luminous power of a light source including LEDs, fluorescent lamps, halogen lamps, or filament lamps. In addition, lumens are also known as luminance or luminous flux. A reference example: a standard 100W filament bulb corresponds to 1500 – 1700 lumens.

Determine The Number of Lumens Needed

Each lumen is a unit of measurement of light. To determine the number of lumens needed, you will have to multiply the area of ​​the room by the required number of footcandles.

  • A 100 square feet (10-20 foot) living room with an output of 1,000-2000 lumens, the dining room will a 100 square feet (3000-4000 lumen) living area with an output of 30-40 foot candles.
  • For an average space of 250 square feet, you’ll need around 5,000 lumens for your main light source (20 lumens x 250 square feet). In your dining room, you will need about 30 lumens per square foot of your dining table, so if your dining table is 6 x 3 feet then you will need 540 lumens.
  • Nevertheless, bear in mind that the figures are typical. You need an extra 10 lumens per square foot if you have unusually dark walls and furnishings, or use furnishings with tones. We are based on the 8-foot-high ceiling measurement. In the end, choice plays the most important part in personal taste.

You will want to add 10 to 20 percent more numbers if you want particularly bright spaces. Really, in most spaces, the only solution is to set the light from high to low to lower the level of light to the optimal level.

How Many Lumens For Desk Lamp?

How Many Lumens For Desk Lamp?
How Many Lumens For Desk Lamp?

The current standard for reading and learning is between 350 and 400 lumens / square meters. More detail in the US divides the standard illuminances as follows:

  1. The standard illuminance for reading is 500 – 550 lumens / 1m2
  2. The standard illuminance for study and research is 700 – 750 lumens / 1 square meter
  3. > 1000 lumens / 1m2 Standard illuminance for meticulous and detailed jobs such as fine-grading, detailed watch-making, headphones …

In addition, for answering the question “How many lumens for a desk lamp”, we will share with you a few metrics that will be needed in your life. Each installation space will have different lighting needs, so you should pay attention to install lighting in each area. If your installation area is the living room, dining room, test room This is an area that requires a lot of light.

Here is how to calculate the standard area illuminance of the standard area for each area that you should keep in mind:

 “1Lux (lx) = 1lumen / 1m²”

  • Conference room, meeting room: 500lx (ie 500lumen / 1m2)
  • Classroom: 300lumen /1m2
  • Stairs, corridors of apartment buildings, buildings: 750 lumens /1m2
  • Bedroom: 150 lumens /1m2
  • Family living room: 150 – 300 lumens /1m2
  • Family kitchen: 400 – 800 lumen /1m2
  • Bathroom: 400 – 800 lumens /1m2

Therefore, we have the following calculation of the number of bulbs needed for each area:

  • Illuminance = capacity of x-ray luminaire x number of lamps used: required area of ​​illumination
  • So we have the number of lamps to be installed = illumination area x standard illuminance: lamp output x luminous flux.

5 Criteria Needed For a Desk Lamp

After the question How many lumens for a desk lamp? you also need to consider factors that will affect your eyes and work. Here is some useful information for you when choosing to buy lights beyond the question.

5 Criteria Needed For a Desk Lamp
5 Criteria Needed For a Desk Lamp

#1. Light closest to natural light

Pay attention to choose a lamp with a high CRI (color rendering index). If natural light is 100, the CRI has an index of 0 to 100, the higher the CRI, the closer the light is to natural light. Compact fluorescent bulbs on the market often have a CRI of about 65-70.

#2. Not flashing

All compact, fluorescent bulbs flash at high frequencies that cannot be seen by the eye, but always adjust accordingly and cause eye fatigue if operated with this light for a long time.

On the market today, there are also a lot of LEDs and also LED desk lamps, due to their poor quality, they still, blink like compact lights (the nature of LED technology brings continuous light and does not flicker), please save consumers. choose before buying.

You can check for yourself by using the phone’s camera to shoot directly into the light source to see if the light flickers, the blinking light shows the light and dark streaks alternately, and the light with continuous light will not output.

#3. Reduce glare and limit direct sunlight

The human eye perceives things because the light shining on the object then reflected brings the visual information into the human eye, so the light that falls directly into the eye does not help to see, but often causes glare and eye fatigue.

LED has a weakness when making desk lamps is glare phenomenon due to the nature of the LED light emitted from the point of light. So a best-LED desk lamp needs to pay attention to the light dissipation to both help the light to spread widely while limiting the glare that causes eye strain.

When choosing a table lamp should not use lamps with a light source focused at one point, these lights will give a small light area, usually light in the center of the lamp, and will cause glare when looking at the lamp or passing a light. objects such as pen boxes are reflective.

#4. Ability to adjust angles and create a wide illuminated surface

Each individual has a way of choosing working areas with the following factors: height, width, desk size, different work areas.

Desk lamps need flexible angle adjustment to suit any work area. The large illuminated surface helps a comfortable working space without restrictions and lack of light.

#5. Light color

Consumers often mistakenly assume that yellow light is better than white light in school. In fact, the light color does not affect eye health but has an impact on human perception.

The golden light gives a warm, close feeling; while the white light feels refreshingly awake. Use reasonable light colors to bring efficiency to work and study.

Note When Selecting Lumen with The LED Light

LEDs Is a technology that has been invented for a long time (for example, when the TV light is turned off by a remote control made of the LED). But to this day when LED technology develops into the 3rd generation, SMD LED technology, light produces brighter and more durable, ensuring replacement for old light sources.

Therefore, when choosing LED table lamps, consumers should pay attention to the generation of LED chips to avoid using old LED chips that lack light or COB LEDs mainly used in an industry often cause high glare, not beneficial to the eyes.


Hopefully, through this article, you will get useful information and have been able to find the answer to the question How many lumens for a desk lamp? Please care and protect your eyes with a number of Lumens suitable for all spaces, especially for work and study. Wish you choose a good product.