LED Wattage to Lumens Converter
Enter an LED wattage to see its approximate brightness in lumens and the old incandescent bulb it replaces.
How many lumens is a 9W LED?
A 9 W LED produces roughly 800-900 lumens, equivalent to a 60 W incandescent bulb. Always compare lumens when choosing between bulbs.
How this works
Brightness is measured in lumens, not watts. Modern LEDs produce about 90-100 lumens per watt, so a 9 W LED gives roughly 850 lumens — the same light as an old 60 W incandescent bulb at a fraction of the electricity.
Buy lumens, not watts
Brightness is measured in lumens, not watts. Watts only tell you how much power a bulb draws. Modern LEDs produce about 90-100 lumens per watt, so a 9 W LED gives roughly 850 lumens — the same light as an old 60 W incandescent bulb at a fraction of the electricity.
Colour temperature matters too
Two bulbs of the same lumens can feel very different. Warm white (2700-3000K) is cosy and suits bedrooms and living rooms; cool daylight (6500K) is crisp and better for kitchens, study rooms and bathrooms. Check the Kelvin number on the box alongside the lumens.
| LED | Lumens (approx) | Replaces (incandescent) |
|---|---|---|
| 5 W | 475 lm | 40 W |
| 7 W | 665 lm | 50 W |
| 9 W | 855 lm | 60 W |
| 12 W | 1140 lm | 75 W |
| 15 W | 1425 lm | 100 W |
| 18 W | 1710 lm | 120 W |
Frequently asked questions
How many lumens is a 9W LED?
A 9 W LED produces roughly 800-900 lumens, equivalent to a 60 W incandescent bulb. Always compare lumens when choosing between bulbs.
What replaces a 100W bulb?
About a 15 W LED (roughly 1400 lumens) gives the same brightness as an old 100 W incandescent bulb.
Warm white or cool white?
Warm white for bedrooms and living rooms, cool daylight for kitchens, bathrooms and study areas.
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