How many watts does a LED bulb use? (9 W)
A LED bulb uses about 9 W
Typical range 5–15 watts.
Typical range 5–15 watts.
Running cost calculator
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An LED bulb produces the same brightness as an old incandescent for a fraction of the watts, which is why it dominates modern lighting.
LED bulb power specs
| Typical running power | 9 W |
| Typical range | 5–15 W |
| Energy use | 0.04 kWh/day · 1.3 kWh/mo |
What affects a LED bulb's wattage
A LED bulb is rated around 9 W, but the real figure shifts with a few things:
- Model and rating: A LED bulb ranges from about 5 W on efficient units to 15 W on larger or older ones — a spread of ~10 W.
- Usage: the real draw depends on the bulb type and brightness.
- Run time: because a LED bulb typically runs about 5 h/day, hours of use matter as much as raw wattage on your bill.
Running cost at $0.17/kWh
| Electricity rate | Per day | Per month | Per year |
|---|---|---|---|
| $0.10/kWh | $0.00 | $0.13 | $1.64 |
| $0.15/kWh | $0.01 | $0.20 | $2.46 |
| $0.20/kWh | $0.01 | $0.27 | $3.28 |
| $0.25/kWh | $0.01 | $0.34 | $4.11 |
| $0.30/kWh | $0.01 | $0.40 | $4.93 |
| $0.40/kWh | $0.02 | $0.54 | $6.57 |
See the full breakdown of what it costs to run a LED bulb, or what size power station runs a LED bulb.
FAQ
How many watts does an LED bulb use?
A typical LED bulb uses 5-15 watts to match a 40-100 W incandescent.
How much does an LED bulb cost to run?
Only a dollar or two a year even at several hours a day.