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5 godz. temu · Watts = Lumens / Luminous Efficacy (lm/W) For example, if an LED bulb provides 900 lumens and has a luminous efficacy of 100 lumens per watt (lm/W), it uses only 9 watts of power. By using this formula, you can easily determine the most energy-efficient option for your lighting needs.
Here is a breakdown of traditional watt light bulbs and the amount of light they produce in lumens: 40 Watt bulb creates 450 Lumens; 60 Watt bulb creates 800 Lumens; 75 Watt bulb creates 1100 Lumens; 100 Watt bulb creates 1600 Lumens; 150 Watt bulb creates 2200 Lumens; 200-300 Watt bulb creates 2800-4800 Lumens; 500+ Watt bulb creates 6000+ Lumens
So, if you previously bought incandescent bulbs measured in watts, here's a handy guide showing how many lumens you might need and the wattage conversion. Note that these conversions use a set average figure for lumens per watt (lm/W), based upon data from the Energy Saving Trust and Energy Star.
Lightbulb brightness in general is measured in lumens (not watts). Bulb manufacturers include this information and the equivalent wattage right on the packaging. Common terms are ‘soft white 60,’ ‘warm light 60,’ and ’60 watt replacement.’.
To make sure you get the same brightness from your energy efficient bulbs, use this chart to compare the wattages of different technologies.*. Using the chart we can see that if you want to replace a 40W incandescent light bulb with a compact fluorescent (CFL), you will likely need a 7W CFL.
For example, if you wanted to replace a 60-watt incandescent bulb, what wattage LED bulb would be roughly equivalent? Using the 7:1 ratio, simply divide 60 watts by 7 to get roughly 9 watts. But efficacy varies greatly from manufacturer to manufacturer, so it’s best to check the Lighting Facts label and try to match lumens.
Are you looking for an energy-efficient replacement for your 40 watt light? For example, to replace a 40 watt light bulb for a LED lamp the amount of lumens must be compared. In the table below you can easily see how much 40 watt in lumens is and which alternatives you can choose.
