Elara Bennett1200 lux corresponds to 1200 lumens when the illuminated area is exactly 1 square meter. This means if you have a surface area of one square meter lit uniformly at 1200 lux, the total luminous flux is 1200 lumens.
The conversion between lux and lumens depends on the area over which the light is spread. Lux measures illuminance, or lumens per square meter, so to convert lux to lumens, you multiply lux by the area in square meters.
Conversion Tool
Result in lumens:
Conversion Formula
The formula to convert lux (lx) to lumens (lm) depends on the surface area illuminated. Lux represents lumens per square meter, so the formula is:
Lumens = Lux × Area (in m²)
This works because lux measures the intensity of light hitting a surface, while lumens count total light emitted or received. For example, if a surface of 2 square meters is lit by 500 lux, then total lumens equals 500 × 2 = 1000 lumens.
Since no area was specified in the initial conversion, the assumption is 1 square meter:
1200 lux × 1 m² = 1200 lumens
Conversion Example
- Convert 800 lux over 1.5 m²:
- Multiply 800 by 1.5
- Result: 1200 lumens
- This means 800 lux on 1.5 square meters equals 1200 lumens total.
- Convert 1500 lux over 0.8 m²:
- Multiply 1500 by 0.8
- Result: 1200 lumens
- So 1500 lux illuminating 0.8 square meters equals 1200 lumens.
- Convert 1000 lux over 1.2 m²:
- Multiply 1000 by 1.2
- Result: 1200 lumens
- Meaning 1000 lux on 1.2 square meters results in 1200 lumens.
Conversion Chart
This chart shows lux values from 1175.0 to 1225.0 converted to lumens assuming the illuminated area is 1 square meter. To use it, find the lux value closest to your measurement, then read across to find the corresponding lumens. If your area differs, multiply the chart value by your area.
| Lux (lx) | Lumens (lm) |
|---|---|
| 1175.0 | 1175.0 |
| 1177.5 | 1177.5 |
| 1180.0 | 1180.0 |
| 1182.5 | 1182.5 |
| 1185.0 | 1185.0 |
| 1187.5 | 1187.5 |
| 1190.0 | 1190.0 |
| 1192.5 | 1192.5 |
| 1195.0 | 1195.0 |
| 1197.5 | 1197.5 |
| 1200.0 | 1200.0 |
| 1202.5 | 1202.5 |
| 1205.0 | 1205.0 |
| 1207.5 | 1207.5 |
| 1210.0 | 1210.0 |
| 1212.5 | 1212.5 |
| 1215.0 | 1215.0 |
| 1217.5 | 1217.5 |
| 1220.0 | 1220.0 |
| 1222.5 | 1222.5 |
| 1225.0 | 1225.0 |
Related Conversion Questions
- How many lumens are in 1200 lux over 2 square meters?
- What is the difference between lux and lumens for 1200 lux value?
- Can I convert 1200 lux to lumens without knowing area?
- How does changing the area affect lumens when lux is 1200?
- Is 1200 lux bright enough to equal 1200 lumens?
- What is the formula to get lumens from 1200 lux?
- If a bulb outputs 1200 lumens, what lux will it produce on 1 square meter?
Conversion Definitions
Lux: Lux measures illuminance, the amount of visible light falling on a surface per unit area. One lux equals one lumen per square meter. It indicates how brightly a surface is lit, which varies with distance and spread of the light source.
Lumens: Lumens measure luminous flux, the total quantity of visible light emitted by a source per second. It quantifies the perceived power of light, regardless where it falls, representing brightness output from bulbs or lamps.
Conversion FAQs
Why does the area matter when converting lux to lumens?
Lux is a measure of light intensity per area, while lumens count total light output. Without knowing area, you can’t calculate lumens from lux because lumens equals lux times area. So, the same lux value over a bigger area means more lumens total.
Can I convert lux to lumens for irregular-shaped areas?
Yes, but you need to estimate the total surface area illuminated. If the shape is irregular, calculate or approximate its area in square meters, then multiply by the lux value to get lumens. Accuracy depends on how precise the area measurement is.
Is 1200 lumens always equal to 1200 lux?
No, 1200 lumens only equals 1200 lux if the light is evenly spread over exactly 1 square meter. If the area changes, lux changes inversely. For example, 1200 lumens over 2 square meters equals 600 lux.
Does distance from the light source affect lux and lumens?
Distance affects lux because illuminance decreases with distance squared from the source, but lumens stay constant since it measures total light emitted. So, moving further reduces lux but lumens output remains unchanged.
How accurate is the lux-to-lumen conversion without considering reflectivity?
Reflectivity of surfaces can change how much light is effectively received or measured. Lux readings might vary due to reflections or absorption, so the raw lux to lumens conversion assumes direct illumination without accounting for reflective effects, which can cause deviations.
