Lumens to watts calculator

Lumens (lm) to watts (W) calculator.

Enter the luminous flux in lumens, luminous efficacy in lumens per watt and press the Calculate button to get the power in watts:

	Enter luminous flux in lumens:		lm
	Enter luminous efficacy  in lumens per watt:		lm/W		-- select lamp type-- Incandecend light bulb Fluorescent lamp LED lamp
	Power result in watts:		W

Watts to lumens calculator ►

Lumens to watts calculation formula

The power P in watts (W) is equal to the luminous flux ϕ_V in lumens (lm), divided by the luminous efficacy η in lumens per watt (lm/W):

P_(W) = ϕ_V(lm) / η_(lm/W)

 

Lumens to watts calculation ►

 

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See also

• Watts to lumens calculator
• Lumens to watts calculation
• Watt
• Electrical calculation
• Power conversion