Lumen
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Switch L to lm
Lumen Unit Table
A list of units symbol and data.
From lmTo LAll conversion
1 lm0.0003141592653587727 L
2 lm0.0006283185307175454 L
3 lm0.0009424777960763181 L
4 lm0.0012566370614350909 L
5 lm0.0015707963267938636 L
6 lm0.0018849555921526362 L
7 lm0.002199114857511409 L
8 lm0.0025132741228701817 L
9 lm0.0028274333882289545 L
10 lm0.0031415926535877273 L
Description

Lumen (lm): Measuring Luminous Flux

The lumen is the SI unit of luminous flux, quantifying the total amount of visible light emitted by a source per unit of time. One lumen is defined as the luminous flux emitted within a unit solid angle (one steradian) by a point source with a uniform luminous intensity of one candela. This unit is crucial for evaluating the overall brightness of light sources, such as bulbs and LEDs.

In practical terms, lumens provide a direct measure of a light source's output, enabling consumers and professionals to assess and compare the brightness of different lighting products. Higher lumen values indicate greater light output, which is essential for applications requiring specific illumination levels, from residential lighting to commercial and industrial settings.

Lambert (L): Unit of Luminance for Diffuse Surfaces

The lambert is a non-SI unit of luminance used to measure the brightness of perfectly diffusing surfaces. One lambert equals 3,183.0988618 candelas per square meter. This unit is primarily utilized in photometry and radiometry to describe the luminance of surfaces that scatter light uniformly in all directions.

Understanding the lambert is important for professionals in fields such as lighting design, astronomy, and material science, where accurate measurements of diffuse reflectance are necessary. While not commonly used in everyday applications, the lambert provides valuable insights into the behavior of light on matte surfaces.

Complete list of conversion for Lumen
Lumen (lm)

1 Lumen = 1 Candela

Convert 2 lm → cd

1 Lumen = 1 Candlepower

Convert 2 lm → cp

1 Lumen = 1 Lux

Convert 2 lm → lx

1 Lumen = 0.09290312990644656 Footcandle

Convert 2 lm → fc

1 Lumen = 0.0001 Phot

Convert 2 lm → ph

1 Lumen = 1 Candela per square meter

Convert 2 lm → cd/m²

1 Lumen = 1 Nit

Convert 2 lm → nt

1 Lumen = 0.0001 Stilb

Convert 2 lm → sb

1 Lumen = 0.0003141592653587727 Lambert

Convert 2 lm → L

1 Lumen = 0.2918635079290997 Footlambert

Convert 2 lm → fL

1 Lumen = 1 Lumen second

Convert 2 lm → lm·s

1 Lumen = 1 Lux second

Convert 2 lm → lx·s

1 Lumen = 1 Rayleigh

Convert 2 lm → R