550 lux corresponds to 550 lumens per square meter. Without knowing the surface area, converting lux directly to lumen isn’t straightforward. However, if the illuminated area is 1 square meter, 550 lux equals 550 lumen.
Lux measures illuminance, or how much light falls on a surface per unit area, while lumen quantifies total light output. To convert lux to lumen, knowing the area is necessary because lumen = lux × area.
Conversion Tool
Result in lumen:
Conversion Formula
The formula to convert lux to lumen requires knowing the illuminated area in square meters. The relation is:
Lumen (lm) = Lux (lx) × Area (m²)
Lux measures how much light hits a surface, lumen measures the total light emitted.
Essentially, if you have a lux value and multiply by the area lit, the result is the total lumens.
Example: Given 550 lux over 2 square meters, lumen = 550 × 2 = 1100 lm.
Conversion Example
- Example 1: Convert 600 lux over 3 m²:
- Multiply 600 by 3
- 600 × 3 = 1800 lumens
- The total light output is 1800 lumens
- Example 2: Convert 480 lux over 1.5 m²:
- 480 × 1.5 = 720 lumens
- Thus, 720 lumens is the light output
- Example 3: Convert 525 lux over 0.75 m²:
- 525 × 0.75 = 393.75 lumens
- Light output is 393.75 lumens
- Example 4: Convert 570 lux over 2.2 m²:
- 570 × 2.2 = 1254 lumens
- Resulting lumen is 1254
Conversion Chart
| Lux (lx) | Lumen (lm) at 1 m² area |
|---|---|
| 525.0 | 525.0 |
| 530.0 | 530.0 |
| 535.0 | 535.0 |
| 540.0 | 540.0 |
| 545.0 | 545.0 |
| 550.0 | 550.0 |
| 555.0 | 555.0 |
| 560.0 | 560.0 |
| 565.0 | 565.0 |
| 570.0 | 570.0 |
| 575.0 | 575.0 |
Read the chart by matching the lux value in first column, then the corresponding lumen value assuming the area is 1 square meter. For other areas multiply lumen by area size.
Related Conversion Questions
- How many lumens are in 550 lux on a 2 meter square surface?
- What lumen output corresponds to 550 lux over 0.5 m²?
- Can I convert 550 lux directly to lumens without knowing area?
- If a room has 550 lux illumination, what is the total light in lumens?
- How do I calculate lumen from 550 lux for different surface sizes?
- What is the lumen equivalent of 550 lux on a 10 square meter floor?
- Is 550 lux equal to 550 lumens always?
Conversion Definitions
Lux: Lux is the unit measuring illuminance, which shows how much light falls on a surface area. One lux equals one lumen per square meter. It tells how bright a surface appears under a light source. Lux is used in lighting design to specify brightness levels needed.
Lumen: Lumen measures the total quantity of visible light emitted by a source per second. It describes the light’s power as perceived by human eyes. A higher lumen value means a brighter light source. Lumens indicate the total light output regardless of direction or area.
Conversion FAQs
Why does converting 550 lux to lumens require knowing the area?
Lux measures light intensity per unit area, so without knowing the surface size illuminated, you can’t find the total light output. Lumens depend on both the light intensity and the size of the area lit. If area is unknown, conversion isn’t possible precisely.
Can lux and lumen values be equal?
They can be equal only if the illuminated surface is exactly 1 square meter. Since lux is lumens per square meter, lux equals lumens divided by area. So for 1 m², lux and lumens match numerically.
What if the surface area is larger than 1 square meter?
When area > 1 m², lumens will be greater than lux because total light output increases with area. Multiply lux by the exact area to get lumens. For example, 550 lux over 3 m² equals 1650 lumens.
Does the angle of light affect lux to lumen conversion?
Lux depends on how light spreads over a surface, so angle affects lux measurement. Lumens measure total emitted light regardless of direction. Conversion assumes uniform distribution over the area, so angle could influence practical readings.
Can I convert lumens to lux without area?
No, converting lumens to lux requires knowing the surface area receiving the light. Lux = lumens ÷ area. Without area, one can’t determine illuminance.