# How to calculate total required lumens to Brighten up your space

How to calculate total required lumens to Brighten up your space. Have you ever thought that what quantity of Led lights will be required to brighten up your room? Of course not, because only 5 out of 10 people think about these things. To calculate the total light you have to calculate the total number of lumens required.

The measurement unit of light in SI is the lumen. it is not necessary that the quantity of light for two different people is same.
(SI is an international system of units and it is derived from the French language the modern name of this unit is the metric system. The only unit system that is mostly used by every country.

Led lights to make supply possible of CRI (Color Rendering Index)

It is very burdensome for a simple person to calculate how much light is enough or hum many led bulbs are required for a single room, bathroom, or kitchen.

This question of estimating total lumens is slightly challenging in itself because when you face this question and sit to make calculations, then this whole procedure makes you much more confusing.
By reading this article, you can easily understand the whole procedure, you can easily estimate how many lumens are required for your bedroom, kitchen, dining room, reading room, office, school, and anywhere else.

Here are some terminologies listed below.

### Lumens:

The unit used to measure the light output is called the lumen, also known as light output. Lumen is a measurement of the total visible light emitting from the light source per unit of time.
The study on luminous efficiency function covers how it is weighted according to the eye sensitivity of humans.
The standard light source of 100 watt or incandescent bulbs (emitting light as a result of being heated) produces 1500 to 1700 lumens.

### Watts:

This is also important to know how much electricity is used when we turn on electric or electronic appliances.
Watt is not a unit to measure brightness. it is used to calculate the number of electricity units consumed by a bulb, from its starting to its full brightness.

The sources of light being used these days are, LED, fluorescent, halogen, and incandescent have a different lumen-per-watt ratios. We will use lumens to estimate how much light or brightness is required to lighten the room or space.

### Wattage Equivalence:

If we talk about watts to express the bulb, it is easy to explain and easy to understand, too.
A 100-watt bulb that emits the light as a result of heating the element produces 1500 lumens and the 10-watt LED bulb also produces the same amount of lumens. So it is not wrong to advertise a 10-watt LED bulb in the equivalency of 100 watts.

### Efficacy:

The word efficacy means the ability to produce desired or intended results. As a result of the consumption of each watt, the bulb produces lumens.
The efficiency of the bulb is depending on the number of lumens it produces. The greater the number of lumens produced by the bulb increases the working ability of the bulb.
The products which are selling in the market with the tag of ENERGY STAR label seems to be much efficient and when you use these products at low energy they deliver the same performance as they deliver, on high energy.

## How much light is enough?

how much light is enough? you can determine this by multiplying the total length by the total width.
For example, there is a room with a 10 feet length and a width of 10 feet.
To calculate the square footage, multiply these dimensions. So the square footage according to the example will 100 square feet.

## Calculate the total needed lumens:

As this is described earlier that lumen refers to the measurement unit of light. When you calculate the total needed lumens, it is must collect some data like your room area in square feet and the total requirement of foot-candle for your room.

Let’s see an example if your room size is 100 square feet and that room is your living room then you have to need 15 to 25 footcandles. Simply multiply both values and you will get the total lumens you are required to lighten up your room or desired area.

## Conclusion:

How to calculate total required lumens to Brighten up your space. The quantity of lumens varies according to the area of the room, kitchen, bathroom, etc. For an average area of 300 square feet, the required lumens will be 6000 as the primary source of light.

### Cautions:

One thing to keep in mind is that these numbers are model numbers or according to the typical conditions. If your room walls or fixtures are of dark colors, then your need for lumens will increase because the dark colors absorb the light.

In general, you just have to add 8 to 15 lumens extra per square foot. Everyone has their perceptions about light and personal opinions have a great part in our life but if you like more brightness then add 15% to 20% extra.
The good thing about to get the high and low level of light, simply use the dimmers.