**Watt **– Watt is the unit of power. Power of 1 Watt is the product of current of 1 Ampere and voltage of 1 Volt.

Enter the luminous flux in Lumens.

Select the source of light. E.g: Halogen Lamp, LED Lamp.

Click on the calculate button, you will get power in Watts.

**P _{(W)} = Φ_{V(lm)} / η_{(lm/W)}**

Where,

P(W) =Power in Watts

ΦV(lm) =Luminous flux in Lumens

η(lm/W)= Luminous Efficacy in Lumens per Watt.

**Conversion chart**

light source: LED lamp with luminous efficacy = 90 lm/W

5 lumens to watts = 0.0555 W

10 lumens to watts = 0.111 W

15 lumens to watts = 0.166 W

20 lumens to watts = 0.222 W

50 lumens to watts = 0.555 W

100 lumens to watts = 1.111 W

150 lumens to watts = 1.666 W

180 lumens to watts = 2 W

200 lumens to watts = 2.222 W

560 lumens to watts = 6.222 W

580 lumens to watts = 6.444 W

1000 lumens to watts = 11.111 W

1080 lumens to watts = 12 W

1200 lumens to watts = 13.333 W

1550 lumens to watts = 17.222 W

1680 lumens to watts = 18.666 W

2400 lumens to watts = 26.666 W

3000 lumens to watts = 33.333 W

3750 lumens to watts = 41.666 W

4000 lumens to watts = 44.444 W

4500 lumens to watts = 50 W

5000 lumens to watts = 55.555 W

8000 lumens to watts = 88.888 W

Learn about Lumens to Watts conversion calculator through video.

Luminous flux (lm) | Light source | Efficacy (lm/W) | Power (W) |
---|---|---|---|

1000 | Tungsten incandescent light bulb | 15 | 66.66666667 |

1000 | Halogen lamp | 20 | 50 |

1000 | Fluorescent lamp | 60 | 16.66666667 |

1000 | LED lamp | 90 | 11.11111111 |

1000 | Metal halide lamp | 87 | 11.49425287 |

1000 | High-pressure sodium vapor lamp | 117 | 8.547008547 |

1000 | Low-pressure sodium vapor lamp | 150 | 6.666666667 |

1000 | Mercury vapor lamp | 50 | 20 |

2000 | Tungsten incandescent light bulb | 15 | 133.3333333 |

3000 | Halogen lamp | 20 | 150 |

4000 | Fluorescent lamp | 60 | 66.66666667 |

5000 | LED lamp | 90 | 55.55555556 |

6000 | Metal halide lamp | 87 | 68.96551724 |

7000 | High-pressure sodium vapor lamp | 117 | 59.82905983 |

8000 | Low pressure sodium vapor lamp | 150 | 53.33333333 |

9000 | Mercury vapor lamp | 50 | 180 |