5000 lux converted to lumen equals 5000 lumens when the illuminated area is 1 square meter.
Lux measures illuminance, which is lumens per square meter. To find lumen from lux, multiply lux by the area in square meters. Without knowing the area, lux alone can’t be converted precisely. Assuming the area is 1 m², 5000 lux corresponds to 5000 lumens.
Conversion Tool
Result in lumen:
Conversion Formula
The formula to convert lux (lx) to lumen (lm) depends on the illuminated surface area (A) in square meters (m²):
Lumen (lm) = Lux (lx) × Area (m²)
Lux measures the luminous flux spread over an area, lumen measures the total light emitted. Multiplying lux by the area gives total lumens.
Example:
- Given: 5000 lux and area = 1 m²
- Calculate: 5000 lx × 1 m² = 5000 lm
- If area was 2 m², then 5000 lx × 2 m² = 10000 lm
Conversion Example
- Convert 3000 lux on 2 m² area:
- Step 1: Identify lux = 3000 lx
- Step 2: Area = 2 m²
- Step 3: Multiply: 3000 × 2 = 6000 lumen
- Convert 7500 lux on 0.5 m² area:
- Step 1: Lux = 7500 lx
- Step 2: Area = 0.5 m²
- Step 3: 7500 × 0.5 = 3750 lumen
- Convert 10000 lux on 1.2 m² area:
- Step 1: Lux = 10000 lx
- Step 2: Area = 1.2 m²
- Step 3: 10000 × 1.2 = 12000 lumen
Conversion Chart
| Lux (lx) | Area (m²) | Lumen (lm) |
|---|---|---|
| 4975.0 | 1 | 4975.0 |
| 4980.0 | 1 | 4980.0 |
| 4985.0 | 1 | 4985.0 |
| 4990.0 | 1 | 4990.0 |
| 4995.0 | 1 | 4995.0 |
| 5000.0 | 1 | 5000.0 |
| 5005.0 | 1 | 5005.0 |
| 5010.0 | 1 | 5010.0 |
| 5015.0 | 1 | 5015.0 |
| 5020.0 | 1 | 5020.0 |
| 5025.0 | 1 | 5025.0 |
The chart shows lumen values for lux between 4975 and 5025 assuming 1 square meter illuminated area. To use, find the lux value and multiply by area to get lumens. The table simplifies this calculation for 1 m² space.
Related Conversion Questions
- How many lumens are in 5000 lux over 3 square meters?
- Can 5000 lux be directly converted to lumens without knowing the area?
- What is the lumen output if 5000 lux falls on 0.75 m²?
- How to convert 5000 lux to lumen for different room sizes?
- Is 5000 lux equal to 5000 lumens under all conditions?
- How does changing surface area affect converting 5000 lux to lumen?
- What is the formula to find lumens from 5000 lux on an irregular surface?
Conversion Definitions
Lux: Lux is a unit measuring illuminance, which quantifies how much luminous flux hits a surface per square meter. It indicates the intensity of light perceived by the human eye on that surface, taking into account both the light source and distance.
Lumen: Lumen measures luminous flux, or total quantity of visible light emitted by a source. It tells how bright a light source is to human eyes, regardless of direction or area illuminated, representing the overall light output.
Conversion FAQs
Why can’t I convert lux to lumen without knowing the area?
Lux is a measure of light intensity per unit area, lumen is total light emitted. Without the size of the surface lit, you can’t find the total lumens because lux only tells how bright the light is at a certain spot, not the total output.
Does surface type affect lux to lumen conversion?
Surface type can affect perceived brightness due to reflection or absorption, but the mathematical conversion from lux to lumen depends only on area, not surface properties. So, for calculations, surface type doesn’t change lux-to-lumen formula.
What unit should I use to measure light output in a room?
To measure total light output, lumen is preferred since it describes total light emitted. Lux is useful for measuring light intensity on surfaces within the room. Both units are needed for different lighting assessments.
How accurate is the lux to lumen conversion when area is estimated?
Estimating area can cause errors in lumen calculations since lumens depend on area. If the surface area is not precise, the converted lumen value will be inaccurate. Accurate area measurement is necessary for exact conversions.
Is there a standard area assumed when converting lux to lumen?
No standard area is assumed universally. Some calculations assume 1 m² for simplicity, but actual conversions require the real illuminated area. Always clarify the area to ensure the conversion makes sense in practical terms.