Elara Bennett50 lux corresponds to 50 lumens per square meter, but to convert it to total lumens, you need to know the area illuminated. Assuming an area of 1 square meter, 50 lux equals 50 lumens.
Lux measures illuminance, or how much light hits a surface area, while lumens measure total light output. So, converting lux to lumens requires multiplying lux by the surface area in square meters. Without area, the conversion is incomplete.
Conversion Tool
Result in lumens:
Conversion Formula
The formula to convert lux to lumens is:
Lumens = Lux × Area (m²)
Lux measures luminous flux per unit area, meaning how much light hits each square meter. Lumens measure the total light emitted or received. So, multiplying lux by the illuminated surface area in square meters gives total lumens.
For example, if you have 50 lux shining on a 2 square meter surface:
- Multiply 50 lux by 2 m²
- Lumens = 50 × 2 = 100 lumens
Conversion Example
- Example 1: 30 lux over 3 m²
- Step 1: Identify lux = 30
- Step 2: Identify area = 3 m²
- Step 3: Multiply 30 × 3 = 90 lumens
- Example 2: 80 lux over 0.5 m²
- Step 1: Lux value is 80
- Step 2: Area is 0.5 m²
- Step 3: Multiply 80 × 0.5 = 40 lumens
- Example 3: 100 lux over 1.2 m²
- Step 1: Lux is 100
- Step 2: Area is 1.2 m²
- Step 3: Multiply 100 × 1.2 = 120 lumens
- Example 4: 45 lux over 4 m²
- Step 1: Lux equals 45
- Step 2: Area is 4 m²
- Step 3: Multiply 45 × 4 = 180 lumens
Conversion Chart
| Lux (lx) | Lumens (lm) assuming 1 m² |
|---|---|
| 25.0 | 25.0 |
| 30.0 | 30.0 |
| 35.0 | 35.0 |
| 40.0 | 40.0 |
| 45.0 | 45.0 |
| 50.0 | 50.0 |
| 55.0 | 55.0 |
| 60.0 | 60.0 |
| 65.0 | 65.0 |
| 70.0 | 70.0 |
| 75.0 | 75.0 |
The chart shows lux values and their equivalent lumens when the light is spread over exactly 1 square meter. To use it for other areas, multiply the lumens by the area in square meters to get total light output.
Related Conversion Questions
- How many lumens is 50 lux over 2 square meters?
- What is the formula to convert 50 lux to lumens for different room sizes?
- If I have 50 lux on a desk, how much total lumens does that represent?
- Can 50 lux be directly converted to lumens without knowing area?
- How does area affect the conversion of 50 lux into lumens?
- What lumens value corresponds to 50 lux in a 5 m² space?
- Is 50 lux a high or low lumens value for lighting?
Conversion Definitions
Lux: Lux is a unit measuring illuminance, representing how much luminous flux falls on a surface area. One lux equals one lumen per square meter. It quantifies the brightness perceived on surfaces, considering both the light emitted and the area illuminated.
Lumens: Lumens measure the total amount of visible light emitted by a source. It quantifies brightness perceived by human eyes regardless of direction or area. Higher lumens mean brighter light output from lamps or bulbs, independent of how that light spreads.
Conversion FAQs
Can I convert lux to lumens without knowing the area?
No, converting lux to lumens requires knowing the surface area illuminated. Lux indicates light per square meter, so without area, total lumens cannot be calculated. You must multiply lux by the area in square meters to find lumens.
Why does the area affect lux to lumens conversion?
Because lux measures light intensity per unit area, while lumens represent total light output. If light spreads over a larger area, the lux value decreases even though lumens stay the same. Therefore, area directly changes the lumens calculated from lux.
Is 50 lux a bright or dim lighting level?
50 lux is relatively low illumination, suitable for ambient lighting or hallways. For tasks like reading or detailed work, higher lux levels (300-500 lux) are recommended. Lumens alone don’t indicate brightness without area context.
Does the shape of the illuminated area affect lux to lumens conversion?
No, the shape does not matter for the conversion formula. Only total surface area in square meters is needed. Whether the area is rectangular or circular, multiplying lux by area yields lumens.
How does distance from the light source impact lux and lumens?
Distance affects lux because illuminance decreases with distance squared, spreading the same lumens over larger area. Lumens emitted by the source stay constant, but lux value on surfaces changes depending on distance.
