Lumen (lm)

The lumen (lm) is the SI unit of luminous flux, measuring total visible light output from a source. Common bulb outputs: 40W incandescent ≈ 450 lm, 60W equivalent LED ≈ 800 lm, 100W equivalent ≈ 1,600 lm. Projector: 3,000-10,000 lm. One lumen = one candela × one steradian.

Convert From Lumens

Lumens to Millilumens Lumens to Microlumens Lumens to Kilolumens Lumens to Megalumens Lumen to Gigalumen Lumens to cd·sr Lumens to Candlepower Lumen to Hefnerkerze Lumens to W@555nm

Convert To Lumens

Millilumens to Lumens Microlumens to Lumens Kilolumens to Lumens Megalumens to Lumens Gigalumen to Lumen cd·sr to Lumens Candlepower to Lumens Hefnerkerze to Lumen W@555nm to Lumens

Conversion Factors

1 lm 1e-6 mlm

1 lm 1000000 μlm

1 lm 0.001 klm

1 lm 1e-6 Mlm

1 lm 1e-9 Glm

1 lm 1 cd·sr

1 lm 0.0795798186 MSCP

1 lm 0.0928505107 HK

1 lm 0.0014641288 W@555nm

Related Units

Millilumen (mlm) Microlumen (μlm) Kilolumen (klm) Megalumen (Mlm) Gigalumen (Glm) Candela Steradian (cd·sr) Candlepower (Mean Spherical) (MSCP) Hefnerkerze (HK) Watt at 555nm (W@555nm)