750 lux equals 7500 lumens, assuming the area illuminated is 10 square meters. Lux measures illumination per square meter, so multiplying by area in square meters gives the total lumens, which is total light output.
Lux (lx) is illuminance, lumens (lm) is luminous flux. To convert lux to lumens, you multiply lux by the surface area being lit. Without area, lux alone can’t be converted directly to lumens because lumens depend on total light output, not intensity per area.
Conversion Tool
Result in lumens:
Conversion Formula
The formula to convert lux to lumens is:
Lumens (lm) = Lux (lx) × Area (m²)
This works because lux measures the luminous flux per unit area. When you multiply the illumination by the surface area, you get total luminous flux emitting from that surface.
For example, if an area of 10 square meters has an illumination of 750 lux, the total lumens is calculated by:
- Multiply 750 lux by 10 m²
- 750 × 10 = 7500 lumens
Conversion Example
- Convert 600 lux to lumens for same 10 m² area:
- Multiply 600 × 10
- Result: 6000 lumens
- Convert 850 lux in 10 m²:
- 850 × 10 = 8500 lumens
- Convert 700 lux for 10 m²:
- 700 × 10 = 7000 lumens
- Convert 775 lux for 10 m²:
- 775 × 10 = 7750 lumens
- Convert 725 lux for 10 m²:
- 725 × 10 = 7250 lumens
Conversion Chart
| Lux (lx) | Area (m²) | Lumens (lm) |
|---|---|---|
| 725.0 | 10 | 7250 |
| 730.0 | 10 | 7300 |
| 735.0 | 10 | 7350 |
| 740.0 | 10 | 7400 |
| 745.0 | 10 | 7450 |
| 750.0 | 10 | 7500 |
| 755.0 | 10 | 7550 |
| 760.0 | 10 | 7600 |
| 765.0 | 10 | 7650 |
| 770.0 | 10 | 7700 |
| 775.0 | 10 | 7750 |
This chart shows how different lux values convert to lumens over a 10 square meter area. You can read across the row to find the lumens output for a specific lux input.
Related Conversion Questions
- How many lumens does 750 lux produce on a 10m² surface?
- What is the lumen equivalent of 750 lux in a room?
- Can 750 lux be converted to lumens without knowing area?
- How to calculate lumens from 750 lux lighting?
- Does 750 lux lighting correspond to 7500 lumens for 10 square meters?
- What area is assumed when converting 750 lux to lumens?
- Is 750 lux the same as 750 lumens?
Conversion Definitions
Lux: Lux is a unit measuring illuminance, representing how much luminous flux is spread over a given area. One lux equals one lumen per square meter, quantifying the intensity of light that hits a surface, affecting how bright the surface appears.
Lumens: Lumens measure the total amount of visible light emitted by a source. Unlike lux, lumens quantify the overall light output without considering the area illuminated, describing the brightness perceived by the human eye from a light source.
Conversion FAQs
Why does lux require area to convert to lumens?
Lux measures light per unit area, so without knowing the surface size, you can’t calculate total light output. Lumens represent total light emitted, which requires multiplying lux by the area. Without area, lux alone insufficient to find lumens.
Can I assume 10 square meters always when converting lux to lumens?
No, the area depends on the lighting setup or room size. Using 10 m² is just an example. Actual conversion requires knowing the exact surface area lit, or else the lumens result will be inaccurate for your specific case.
Is converting lumens to lux simply dividing by area?
Yes, converting lumens back to lux involves dividing the total luminous flux by the surface area. This finds illumination intensity per square meter, which is what lux measures. Accuracy depends on correct area measurement.
Does the light source type affect lux to lumens conversion?
Conversion itself is a simple calculation, but different light sources spread light unevenly, affecting lux measurement on surfaces. So, while formula stays, real-world lux readings may vary depending on light distribution.
Why can’t I convert lux to lumens without knowing the surface area?
Because lux is a measurement of light per area, and lumens is total light, you need area to find total luminous flux. Without area, there’s no way to determine how much total light corresponds to a lux value.