Is a flat iron expensive to run?

Unplug after use — for safety, not savings; the cost was never the issue. At typical use it adds about $0.15 to a monthly electric bill at the US-average rate, but that swings from $0.11 in the cheapest states to $0.39 in the most expensive.

How many watts does a flat iron use?

Flat Iron typically draws about 150 running watts. It's a resistive load, so its startup and running wattage are the same. Check the nameplate or label on your specific unit for its exact rating.

How much electricity (kWh) does a flat iron use?

At typical use (150 W for 0.2 hours a day), a flat iron uses about 0.0 kWh per day — roughly 1 kWh per month, or about 1% of what the average US home uses in a month (863 kWh). Energy used doesn't depend on your electricity rate — only the bill does.

How can I lower the cost of running a flat iron?

Unplug after use — for safety, not savings; the cost was never the issue. You can also cut the cost by lowering your electricity rate — many utilities offer cheaper off-peak hours — or simply by running it fewer hours. The calculator on this page shows how changing hours per day or your electricity rate moves the number.

How Much Does It Cost to Run a Flat Iron?

A flat iron's plates hold heat efficiently at around 150 watts — a daily routine costs well under a dollar a month. At the US-average rate of 16.5¢/kWh, running a flat iron costs about $0.15/month ($1.80/year) at typical use. Adjust the watts, hours, and your rate below for your exact number.

Power (watts)

Hours per day: 0.2

Days per week: 7

Your state (sets the rate)

Electricity rate ($/kWh)

Cost to run a flat iron

$2/yr

Per day: $0.00
Per month: $0.15
Energy per year: 11 kWh

Cost = power (kW) × hours × days × your rate. Defaults are typical values — enter your appliance's actual watts (often on a label) and your real rate for a precise figure.

How much electricity does a flat iron use?

At 150 W for 0.2 hours a day, a flat iron uses about 0.0 kWh per day — roughly 1 kWh per month and 11 kWh per year. That's about 1% of the 863 kWh the average US home uses in a month. Energy use is the same everywhere — only the price per kWh changes your bill.

Wondering about the circuit instead? See how many amps a flat iron draws.

Cost to run a flat iron by electricity rate

Same 150 W appliance, 0.2 h/day — the bill changes with where you live.

Scenario	Rate	Per month	Per year
Cheapest states (North Dakota)	11.5¢	$0.11	$1.26
US average	16.5¢	$0.15	$1.80
Most expensive (Hawaii)	42.9¢	$0.39	$4.69

Find your state's rate on the electricity rates by state page, or see the appliance wattage chart for more devices.

Frequently asked questions

At the US-average residential rate of 16.5¢/kWh, a flat iron drawing 150 watts for about 0.2 hours a day costs roughly $0.00 per day, $0.15 per month, and $1.80 per year. Your actual cost depends on your electricity rate and how much you use it, and the calculator on this page adjusts for both.

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How Much Does It Cost to Run a Flat Iron?

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Cost to run a flat iron by electricity rate

Frequently asked questions