How many watts does a ceiling fan use?
A ceiling fan draws 1–100 watts while running, which is 0.01–0.83 amps on a 120 V circuit.
Ceiling fan watts, amps and circuit
| Running watts | 1–100 W |
|---|---|
| Voltage | 120 V |
| Running amps | 0.01–0.83 A |
| Circuit | standard 120 V outlet |
Also called: ceiling fan with light.
Ceiling fan watts by size and type
| Size or type | Running watts, W | Volts, V | Amps, A | Starting watts, W |
|---|---|---|---|---|
| Ceiling fan | 1–100 | 120 | 0.01–0.83 | — |
| Low speed | 1–18 | 120 | 0.01–0.15 | — |
| High speed | 9–100 | 120 | 0.08–0.83 | — |
How long a portable power station runs a ceiling fan
| Battery capacity, Wh | At 100 W, h | At 1 W, h |
|---|---|---|
| 500 | 4.3 | 425 |
| 1,000 | 8.5 | 850 |
| 2,000 | 17 | 1,700 |
| 3,600 | 30.6 | 3,060 |
A 500 Wh portable power station runs a ceiling fan drawing 100 W for about 4.3 hours at 85% inverter efficiency. Runtime = capacity × 85% ÷ watts; the 85% efficiency is an assumption. The power station's AC output must be at least 100 W.
What it costs to run a ceiling fan
Running a ceiling fan at 51 W, the middle of its 1–100 W range, for one hour a day uses 18.6 kWh a year. That costs about $3.35 a year at $0.18 per kWh, the US average residential price for August 2026.
Your bill's total ÷ kWh used. 0.18 is the US residential average.
- Per day
- $0.01
- Per year
- $3.35
- Energy per day
- 0.05 kWh
- Energy per month
- 1.6 kWh
How it is calculated
- kWh per day = 51 W × 1 h ÷ 1,000 = 0.051
- Per month = 0.051 kWh × 30.4 days × $0.18 = $0.28
What affects ceiling fan power use
Fan speed and fan size drive the number: the same fan draws far more on high than on low, and large fans draw the most. A light kit adds its own watts on top of the motor. A ceiling fan is wired into a lighting circuit, not on its own breaker.
How the amps are calculated
Amps = watts ÷ volts. For 100 W at 120 V that is 0.83 A. The 1–100 W range covers typical models; the nameplate on a ceiling fan gives the exact figure.