2400 lux corresponds to 2400 lumens when the illuminated surface area is exactly 1 square meter. This is because 1 lux equals 1 lumen per square meter.
Lux measures illuminance, the amount of light falling on a surface, whereas lumens measure luminous flux, the total light emitted by a source. By multiplying lux by the area in square meters, you get lumens.
Conversion Tool
Result in lumens:
Conversion Formula
The formula to convert lux (lx) to lumens (lm) depends on the surface area illuminated. Lumens equals lux times area in square meters:
Lumens (lm) = Lux (lx) × Area (m²)
This works because lux measures light per unit area, so multiplying by area cancels out the area unit, leaving total light output in lumens. For example, if a light source illuminates a 1 square meter surface with 2400 lux, lumens = 2400 × 1 = 2400 lumens.
If area is 2 m² and illuminance is 2400 lux, lumens = 2400 × 2 = 4800 lumens.
Conversion Example
- Convert 1500 lux to lumens for 1 m²:
- Step 1: Identify lux = 1500
- Step 2: Area is 1 m²
- Step 3: Lumens = 1500 × 1 = 1500 lumens
- Convert 3000 lux to lumens for 0.5 m²:
- Step 1: Lux = 3000
- Step 2: Area = 0.5 m²
- Step 3: Lumens = 3000 × 0.5 = 1500 lumens
- Convert 500 lux to lumens for 3 m²:
- Step 1: Lux = 500
- Step 2: Area = 3 m²
- Step 3: Lumens = 500 × 3 = 1500 lumens
- Convert 10000 lux to lumens for 0.1 m²:
- Step 1: Lux = 10000
- Step 2: Area = 0.1 m²
- Step 3: Lumens = 10000 × 0.1 = 1000 lumens
Conversion Chart
| Lux (lx) | Lumens (lm) for 1 m² |
|---|---|
| 2375.0 | 2375.0 |
| 2380.0 | 2380.0 |
| 2385.0 | 2385.0 |
| 2390.0 | 2390.0 |
| 2395.0 | 2395.0 |
| 2400.0 | 2400.0 |
| 2405.0 | 2405.0 |
| 2410.0 | 2410.0 |
| 2415.0 | 2415.0 |
| 2420.0 | 2420.0 |
| 2425.0 | 2425.0 |
This chart shows lux values from 2375 to 2425, converted to lumens assuming the surface area is 1 square meter. To find lumens, multiply lux by the surface area. For different areas, multiply these values accordingly.
Related Conversion Questions
- How many lumens equal 2400 lux on a 2 square meter surface?
- What’s the difference between lux and lumens when converting 2400 lux?
- Can 2400 lux be converted to lumens without knowing the area?
- How to calculate lumens from 2400 lux for a 0.75 m² area?
- What is the lumen output if 2400 lux illuminates 3 square meters?
- Does converting 2400 lux to lumens require specific equipment?
- How accurate is converting 2400 lux to lumens in real-world lighting?
Conversion Definitions
Lux: Lux is a unit measuring illuminance, which quantifies the amount of visible light that falls on a surface per unit area. One lux equals one lumen per square meter, so it measures how bright a surface appears under illumination.
Lumens: Lumens indicate the total amount of visible light emitted by a source in all directions. It measures luminous flux, representing how much light a bulb or lamp produces regardless of where it falls.
Conversion FAQs
Why does converting lux to lumens need the surface area?
Lux measures light intensity per square meter, so without knowing the surface area, you can’t find total luminous flux in lumens. Lumens equals lux multiplied by area; if area is unknown, the conversion is incomplete or only symbolic.
Can lux be higher than lumens?
No, lux and lumens measure related but different things. Lux is lumens divided by area, so for a small area with constant lumens, lux can be very high. But lumens is total light emitted; lux can’t exceed lumens without changing area.
How does surface reflectance affect lux to lumens conversions?
Surface reflectance changes how much light is absorbed or reflected, impacting lux readings. But lumens measure total emitted light, so reflectance doesn’t affect lumens but changes measured lux on surfaces.
Is the conversion formula valid for non-flat surfaces?
The formula assumes flat surfaces perpendicular to light. For curved or angled surfaces, effective area changes, so direct multiplication may not yield accurate lumens from lux without adjustments.
Can lux to lumens conversion be used for outdoor lighting?
Yes, but outdoor lighting areas vary and light distribution is uneven, making precise conversion tricky. Estimating lumens from lux outdoors requires knowing exact illuminated area and angles to avoid errors.
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