How many watts does a LED light strip use? (20 W)
A LED light strip uses about 20 W
Typical range 5–100 watts, plus ~1 W on standby.
Typical range 5–100 watts, plus ~1 W on standby.
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An LED strip's power depends on its length and brightness, so a short accent run sips power while a full-room install uses much more.
LED light strip power specs
| Typical running power | 20 W |
| Typical range | 5–100 W |
| Standby draw | 1 W |
| Energy use | 0.08 kWh/day · 2.4 kWh/mo |
What affects a LED light strip's wattage
A LED light strip is rated around 20 W, but the real figure shifts with a few things:
- Model and rating: A LED light strip ranges from about 5 W on efficient units to 100 W on larger or older ones — a spread of ~95 W.
- Usage: the real draw depends on the bulb type and brightness.
- Standby: even idle it keeps drawing ~1 W, which quietly adds up over a year.
- Run time: because a LED light strip typically runs about 4 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 | $0.01 | $0.24 | $2.92 |
| $0.15/kWh | $0.01 | $0.36 | $4.38 |
| $0.20/kWh | $0.02 | $0.48 | $5.84 |
| $0.25/kWh | $0.02 | $0.60 | $7.30 |
| $0.30/kWh | $0.02 | $0.72 | $8.76 |
| $0.40/kWh | $0.03 | $0.96 | $11.68 |
See the full breakdown of what it costs to run a LED light strip, or what size power station runs a LED light strip.
FAQ
How many watts does an LED strip use?
Anywhere from 5 to 100 watts depending on length and density.
Do LED strips use power when dim?
Yes, but lowering brightness directly lowers their wattage.