How Bright is 100 Lumens? Your Lumens Brightness Guide.

How bright is 100 lumens? A common question for those who are considering how to light their house or office. We give you real life applications and comparisons to help you understand what levels of brightness certain quantities of lumens will deliver.

To know how bright 100 lumens is we need to start by explaining how lumens work and how they differ from watts. Watts measure how much energy something uses while lumens measure the brightness of a bulb. So, if you want to know how many lumens your device emits, just multiply the wattage with lumen value (i.e., 15W x 20lm).

In this post we’ll explain more about what these terms mean as well as provide some tips on how these lumen outputs help you determine how much lighting do I need for a room

How Bright is 100 Lumens?

Lumens are the brightness of a candle that is outside 1 meter of the candle. 100 lumens also means the light that 100 candles emit in 1 square meter! An ordinary 40-watt incandescent bulb with a luminous efficiency of about 10 lumens per watt can emit 400 lumens. At 40 volts for a 40-watt incandescent bulb, the luminous flux is 340 lumens. The luminous flux is how visual response from source radiation can be described in units called lumen’s which measures brightness.

Is 100 Lumens Bright Enough to Read By?

The intensity of lighting on a surface (lux) will depend on the direction the light is coming from and how far away it is from the surface to read from. 100 lumens is bright enough to read by if the light source is within 6ft (1.8m) without obstruction.

Is 100 Lumens Bright Enough for a Bathroom?

This is not enough usually enough total lumen output for a bathroom, regardless of how small it may be. The minimum lumen output for a bathroom tiled or painted with white walls would be 600 lumens and how that light is delivered would effect the efficacy of that illumination.

How Many Lumens Does a Toilet Need?

A small toilet with the toilet pan only would just about have sufficient enough light from 100 lumens if the light was delivered directly over the pan to reflect light back out from the white porcelain back into the space.

Ideally a toilet would need a minimum of 300 lumens total output.

Lumen Brightness In the Everyday World

Here are some useful examples to help you estimate:

Your average flashlight has 100 lumens of light. An office lighting fixture has 2500 lumens. A 40-watt bulb emits 400 lumens. This means that you get 10 lumens per watt from a 40-watt bulb, or 100 lumen from a 100-lumen flashlight. You can use a 100-lumen flashlight in urban and suburban areas to scan a small backyard, blind attackers, etc.

There are many ways to use light. A single lumen might not be enough to read in the middle of the night. Ten lumens is bright enough for things like hiking or reading. If you want more light, make sure you have at least 30 lumens so that you can see better.

Your eyes will always adjust no matter how bright or dark it is outside, and they will be able to tell when there is less light even before your eyes start hurting from it being too dark out.

A bike light can be used to find people and objects about 50 meters away. It is also bright enough for a small room. If you want to light a bigger place, like a construction site or factory space, then you need 1000-3000 lumens.

Ten years ago, 100-lumen flashlights were enough for soldiers and police officers. But today, most flashlights go as high as 1000 lumens. The best way to know what 100 lumen means is to buy a flashlight with different brightness settings so you know which one is right for the size of the place that needs lighting. You can buy 5000 lumen flashlights however these are almost always unreasonable and dangerously bright.

For more on lighting outside we ask the question, how many lumens do I need for outdoor lighting

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Lumens vs. Watts

The number of lumens is the amount of brightness that a light can produce. The number of watts is how much energy it takes to create that brightness.

A watt measures how much energy a light bulb uses. The higher the number of watts, the more power it will use. Lumens measure how much light is given off by the bulb. For example, in an energy-efficient 60-watt bulb, it gives 500-700 lumens of light. But you have to buy a bulb based on lumens because they are more accurate than watts when buying a new bulb. You don’t need to worry about how many watts are needed for your home because they all give off different amounts of lumens depending on how much power you need for your house and other factors like the size and type of room and which way people are sitting in that room if it’s an office or bedroom etc.

LED Lumens Chart to Wattage

Brightness in LUMENS220+400+700+900+1300+

Here are some typical lumen related questions involving the brightness of lumens and when they shoud be used.

How Bright is 500 Lumens?

You might be surprised at how bright just 500 lumens can be. If you reffering to a flashlight then I would say that 100-500 lumens is enough. In terms of home lighting, 500 lumens is a typical great quality screw in lamp and will be perfect for your home lighting in a lot og situations without being too bright.

Is 800 Lumens Bright Enough?

An 800 lumen light bulb is not bright enough to serve as the only light source for a room. This type of light is no brighter than a 60 watt incandescent bulb. It is better for closets that do not have a lot of space. The brightest option for a room would be 1,200 lumens or more.

800 lumens are perfect for closets and small spaces where you don’t need a lot of light but want to be able to grab things or find your way around the room. You might also need this level of brightness if there is not much space at all in your bedroom, office

How bright is 1000 lumens?

1000 lumens is perfect for general home lighting creating a nice bright space that isnt too intrusive and bright. This type of brightness is perfect for a bedroom, kitchen or living room.

1000 lumens are great if you don’t need to see how far away things are from the light but just want something bright and happy like in your dining area with lots of natural light coming into it during the day.

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Is 6000 Lumens Bright for Headlights?

6000 is very bright as we now understand and will be plenty bright for any headlight. However you can get brighter up to 10000 lumens! You need to be careful not to have too bright a headlight as to not disrupt other vehicles.

How Bright is 2000 Lumens

2000 lumens is plenty bright for most tasks including as a main light source for a fairly large room. Although It is best to spread these lumens over multiple lights as to prevent an ugly one dimensional room lighting setup. 2000 lumens is also great for projector that need a lot of focused light.

Is 5000 Lumens Very Bright? How Strong is 5000 Lumens?

5000 lumens is a lot of light and can be used for tasks such as street lighting or construction sites.

You need 5,000 lumens as the main light when you have an average room of 250 square feet. This is equivalent to five 100 watt incandescent light bulbs, five 23 watt CFLs, or eight 10 watt LED light bulbs.

Is 3000 Lumens too Bright?

3000 lumens will provide ample brightness in most indoor spaces.

3,000 lumens is not good for bedrooms. You don’t want to be blinded when you are about to go to bed. On the other hand, 2,000 lumens is good for 200 square-foot living rooms.

Andrew Orange , the owner of Orange Lighting qualified and worked as an interior designer in 1993 before specialising in lighting working on high profile projects based in London. Since starting Orange Lighting Ltd in 2003 he has been sharing his knowledge and unique teaching style mostly to his designer clients, offering practical real life advice born from running a busy consultancy and lighting supply business. Launching in 2020, his blog has evolved into Quick & Easy Lighting, curating some 25 years design experience into making the lighting choice and design process achievable and easy to understand for all.