1300 lumen converted to lux depends on the area illuminated. Assuming the light spreads evenly over 1 square meter, 1300 lumen equals 1300 lux.
The conversion from lumen to lux measures how much light is spread over a surface. Lumens measure total visible light output, lux measures intensity per square meter. So, lux equals lumen divided by the area in square meters.
Conversion Tool
Result in lux:
Conversion Formula
The formula for converting lumen to lux is: lux = lumen / area.
Since lumen is total light emitted by a source, and lux measures the light intensity on a surface, the area where the light spreads affects the lux value. If the light covers a larger area, lux decreases; if the area smaller, lux increases.
For example, if 1300 lumens illuminate 1 square meter, the lux is:
- lux = 1300 lumens ÷ 1 m²
- lux = 1300 lx
If the same 1300 lumens spread over 2 square meters, lux is:
- lux = 1300 ÷ 2 = 650 lx
Conversion Example
- Convert 1500 lumens to lux over 3 m²:
- Divide 1500 by 3
- 1500 ÷ 3 = 500 lux
- Result: 500 lux illuminates the surface
- Convert 2000 lumens to lux over 4 m²:
- 2000 ÷ 4 = 500 lux
- This means each square meter gets 500 lux
- Convert 1000 lumens to lux over 0.5 m²:
- 1000 ÷ 0.5 = 2000 lux
- Higher lux because area is smaller
- Convert 1750 lumens to lux over 2.5 m²:
- 1750 ÷ 2.5 = 700 lux
- Indicates moderate brightness
Conversion Chart
| Lumen (lm) | Area (m²) | Lux (lx) |
|---|---|---|
| 1275.0 | 1 | 1275.0 |
| 1280.0 | 1 | 1280.0 |
| 1285.0 | 1 | 1285.0 |
| 1290.0 | 1 | 1290.0 |
| 1295.0 | 1 | 1295.0 |
| 1300.0 | 1 | 1300.0 |
| 1305.0 | 1 | 1305.0 |
| 1310.0 | 1 | 1310.0 |
| 1315.0 | 1 | 1315.0 |
| 1320.0 | 1 | 1320.0 |
| 1325.0 | 1 | 1325.0 |
The chart shows lumen values from 1275 to 1325, assuming light spreads over 1 m². To find lux, divide lumen by area; here area is constant at 1 square meter so lux equals lumen. Use this chart to quickly get lux for these lumen values.
Related Conversion Questions
- How many lux does 1300 lumen produce over 2 square meters?
- What is the lux level from 1300 lumens on a 0.75 m² surface?
- Can 1300 lumen light source provide 1300 lux intensity?
- How to convert 1300 lumens into lux for different room sizes?
- What lux corresponds to 1300 lumens spread evenly over 5 m²?
- Is 1300 lumen equal to 1300 lux always?
- How changes in surface area affect lux when using 1300 lumen light?
Conversion Definitions
Lumen: Lumen measures the total quantity of visible light emitted by a source. It quantifies brightness as perceived by human eyes, regardless direction or area. Higher lumens means brighter light source, useful for comparing bulbs and fixtures.
Lux: Lux measures the illumination intensity on a surface area, equals one lumen per square meter. It indicates how bright a surface will appear under a light source, influenced by distance and spread of the light.
Conversion FAQs
Why does lux change with area but lumen stays constant?
Lumen counts total light output emitted, independent of direction or distance. Lux depends on how that light spreads over a surface area. If same lumens spread over bigger area, lux decreases since light is diluted; smaller area increases lux due to concentration.
Can I convert lumen directly to lux without knowing area?
No, lux calculation requires area value. Without knowing the surface size illuminated, you can’t find lux from lumen alone because lux equals lumen divided by area. Area is essential to define light intensity per square meter.
Does distance between light source and surface affect lux?
Yes, distance affects lux because as light travels further, it usually spreads over larger area reducing intensity. So, lux decreases with distance increase, even if lumen output stays the same. Area size at surface changes with distance.
Are lumen and lux units interchangeable?
No, lumen and lux measure different properties. Lumen is total light output, lux is light intensity per area. They can be related mathematically but represent different concepts and used differently in lighting design and measurement.
How would using a reflector change lux for 1300 lumen?
A reflector can focus or direct light onto smaller area, increasing lux by reducing spread area. The lumen amount stays 1300, but lux rises because same light concentrates in smaller surface, raising illumination intensity.
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