1300 Lumen to Lux – Answer and Calculator Tool

1300 lumen corresponds to 1300 lux on a surface area of 1 square meter. In other words, if 1300 lumens of luminous flux is evenly spread over a surface of 1 square meter, the illuminance equals 1300 lux.

The conversion from lumen to lux depends on the area over which the light is distributed. Lux measures illuminance or light intensity per unit area, while lumen measures total light output. When the area is exactly 1 square meter, 1 lumen equals 1 lux, so 1300 lumens produces 1300 lux.

Conversion Tool

Conversion Formula

The formula to convert lumen (lm) to lux (lx) is:

lux = lumen ÷ area (in square meters)

This formula work because lux measures luminous flux spread over an area, so the amount of light per unit area is the total lumens divided by that area. If the area is 1 square meter, then lux equals lumens.

Example calculation:

• If you have 1300 lumens spread over 1 square meter, lux = 1300 ÷ 1 = 1300 lx.
• If same 1300 lumens spread over 2 square meters, lux = 1300 ÷ 2 = 650 lx.

Conversion Example

• Convert 500 lumens to lux on 1 square meter:
  • Step 1: Identify the area = 1 m².
  • Step 2: Apply formula: lux = 500 ÷ 1.
  • Step 3: Calculate: lux = 500 lx.
• Convert 800 lumens to lux on 4 square meters:
  • Step 1: Area = 4 m².
  • Step 2: lux = 800 ÷ 4.
  • Step 3: lux = 200 lx.
• Convert 1500 lumens to lux on 3 square meters:
  • Step 1: Area = 3 m².
  • Step 2: lux = 1500 ÷ 3.
  • Step 3: lux = 500 lx.
• Convert 2500 lumens to lux on 5 square meters:
  • Step 1: Area = 5 m².
  • Step 2: lux = 2500 ÷ 5.
  • Step 3: lux = 500 lx.

Conversion Chart

This chart shows how lumen values between 1275 and 1325 convert directly to lux when spread on 1 square meter. You read the chart by matching the lumen value on the left with lux on the right, assuming the surface area is constant at 1 m².

Related Conversion Questions

• How many lux does 1300 lumens produce over 2 square meters?
• What is the lux value when 1300 lumen spreads across 0.5 square meters?
• Can 1300 lumens equal 1300 lux in any situation?
• How to convert 1300 lumen to lux for a 3 square meter surface?
• Does the lux increase or decrease if 1300 lumens cover a larger area?
• What area would make 1300 lumens equal 650 lux?
• Is 1300 lumen brightness the same as 1300 lux intensity?

Conversion Definitions

Lumen: A lumen is a unit that measures the total amount of visible light emitted by a source. It quantifies brightness in terms of light output in all directions, meaning higher lumens means brighter light. It doesn’t factor in how that light spreads or illuminates surfaces.

Lux: Lux measures illuminance, or the amount of light that fall on a surface area, per square meter. Unlike lumen, lux accounts for area, so it indicates how intense or bright that light is on a specific surface, useful for lighting design and measurement.

Conversion FAQs

Is it always true that 1 lumen equals 1 lux?

No. One lumen equaling one lux only happens when the light is spread evenly over exactly 1 square meter. If the area changes, lux will increase or decrease accordingly by dividing lumens by that area.

How can I measure lux if I only know lumens?

To find lux from lumens, you need the surface area the light covers. Dividing lumens by that area in square meters gives you lux. Without area, converting between these units isn’t possible, since lux depends on distribution.

Why does lux depend on area but lumen does not?

Lumens quantify total light emitted, so area is irrelevant. Lux measures light intensity on surfaces, so how big the area is matters. More area means light spreads thinner, lowering lux, even if lumens stay the same.

Can lux values be higher than lumen values?

Yes. If the surface area is less than 1 square meter, dividing lumens by a smaller area results in lux greater than lumens. For example, 1300 lumens on 0.5 m² gives 2600 lux.

How does distance from light source affect lux?

As distance increases, the same light covers more area, reducing lux levels. So even with constant lumens, lux decreases with distance, because illuminance depends on area light spreads across, which grows with distance.