How Many Watts of Electricity does a Flat Iron for Hair use?

Real power-use measurements from a flat iron for hair.

How Much Power does a Flat Iron for Hair use

Flat Iron for Hair: 331 Watts


  • A flat iron or crimping iron produces two heated surfaces to heat and influence the shape of dry hair.
  • The flat iron I tested had a thermostat, so the heater came on and off, using between 50 and 331 watts of power.

Power Use

  • Watts: 331
  • Kilowatts: 0.331 Kw.

Operation Cost

  • cost per minute: 7 hundredths of one cent (0.07 ¢)
  • cost per hour: 4¢
  • cost per day: 32¢
  • cost per month: $6.04

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Power use of these items was actually tested. Individual items will vary, but these are the actual measurements.