1300 Lumen to Lux – Answer and Calculator Tool

1300 lumen, when distributed over an area of 1 square meter, equals 1300 lux.

Lumen measures the total amount of visible light emitted by a source, while lux measures the intensity of light on a surface area. So converting lumens to lux requires knowing the area over which the light spreads. Assuming the light is evenly spread over 1 square meter, 1300 lumens equals 1300 lux.

Conversion Tool

Conversion Formula

The formula for converting lumen (lm) to lux (lx) depends on the surface area the light covers. Lux equals lumen divided by the area in square meters:

Lux = Lumen ÷ Area (m²)

This works because lux measures illuminance or light intensity on a surface, whereas lumen measures total light output. If a light emits 1300 lumens evenly over 1 square meter, the lux value is 1300 ÷ 1 = 1300 lux.

Example: If the same 1300 lumens is spread over 2 square meters, lux would be 1300 ÷ 2 = 650 lux.

Conversion Example

• Convert 1500 lumens to lux on 3 m²:
  • Divide 1500 by 3
  • Result: 500 lux
  • The surface receives 500 lux of illuminance
• Convert 900 lumens to lux on 0.5 m²:
  • 900 ÷ 0.5 = 1800 lux
  • Smaller area means higher lux
• Convert 2000 lumens to lux on 4 m²:
  • 2000 ÷ 4 = 500 lux
  • Light intensity reduces with bigger area

Conversion Chart

The chart shows lumen values from 1275 to 1325 with their corresponding lux values, assuming the light spreads over 1 square meter. To use it, find the lumen you want to convert and read the lux value next to it directly.

Related Conversion Questions

• How many lux does 1300 lumens produce on a 2 square meter area?
• What is the lux value for 1300 lumen in a room measuring 5 m²?
• Does 1300 lumen equal 1300 lux on all surfaces?
• How does increasing area affect lux if the lumen stays 1300?
• Can 1300 lumens be converted to lux without knowing the area?
• What lux level do you get from 1300 lumen on 0.75 m² surface?
• Is 1300 lumen bright enough to provide 1300 lux in a workspace?

Conversion Definitions

Lumen: Lumen is a measurement of the total quantity of visible light emitted by a source. It quantifies how much light a lamp or bulb produces in all directions combined. The higher the lumen, the brighter the light appears to the human eye.

Lux: Lux measures illuminance or how much luminous flux falls on a surface area. It equals lumens per square meter and indicates light intensity perceived on a plane. Lux changes depending on distance and spread of the light source.

Conversion FAQs

Why can’t I convert lumen directly to lux without knowing area?

Lumen measures total light output from a source, but lux depends on how that light spreads over an area. Without knowing the surface size, the lux value cannot be calculated accurately because the same lumen amount over a larger surface means less lux.

Does the shape of the light beam affect lumen to lux conversion?

Yes, beam shape affects how light distributes across an area. A focused beam concentrates lumens in a smaller area, increasing lux. A wide beam spreads light over more area, reducing lux even if total lumens remain same. The formula assumes uniform spread.

Can lux ever be higher than lumen?

No, lux is lumens divided by area, so lux cannot exceed lumens. It might appear higher if measuring on a very small area with high light concentration, but total lumens remain constant. Lux reflects intensity, not total light output.

How does distance from the light source impact lux?

Lux decreases as distance increases because light spreads over bigger surface. If you move twice as far, the same lumens cover four times area, so lux drops to a quarter. This inverse square relation affects brightness perception.

Is it possible to convert lux back to lumen?

Yes but only when the illuminated area is known. Multiply lux by the surface area in square meters to get lumens. Without area, you cannot determine total light output from lux alone.