How Much Does a 150-watt hair straightener Cost to Run?
A 150-watt hair straightener uses 0.15 kWh per hour and costs $0.026 per hour at $0.175/kWh. Used 0.3 hours a day, that is $0.008 per day, $0.236 per month and $2.87 per year.
Calculate your own cost
- Per hour
- $0.0260.15 kWh
- Per day
- $0.0080.05 kWh
- Per week
- $0.0550.32 kWh
- Per month (30 days)
- $0.2361.35 kWh
- Per year
- $2.8716.4 kWh
Formula: watts ÷ 1,000 × hours × rate. Edit any box and every number updates instantly.
People also ask
How much does a 150-watt hair straightener cost per hour?
At $0.175/kWh, it costs $0.026 per hour. The maths: 150 W ÷ 1,000 = 0.15 kWh per hour, × $0.175 = $0.026.
How much does it cost per month?
Used 0.3 hours a day for 30 days, it costs about $0.236 per month and uses 1.35 kWh. Change the hours in the calculator above to match how you use it.
How many kWh does it use?
0.05 kWh per day, 1.35 kWh per month and 16.4 kWh per year at 0.3 hours a day. A kWh is one kilowatt (1,000 W) used for one hour. It is the unit on your electricity bill.
How can I lower the cost?
Switch off as soon as you finish styling. Check your bill for the exact rate and enter it above.
Does my electricity rate change the answer?
Yes, a lot. At 10¢ per kWh the monthly cost is $0.135 and at 30¢ it is $0.405. Find your rate on your bill (total cost ÷ kWh used) and type it into the calculator.
Cost by hours of use
| Used per day | Energy per day | Cost per day | Cost per month | Cost per year |
|---|---|---|---|---|
| 1 hour | 0.15 kWh | $0.026 | $0.788 | $9.58 |
| 2 hours | 0.3 kWh | $0.053 | $1.58 | $19.16 |
| 3 hours | 0.45 kWh | $0.079 | $2.36 | $28.74 |
| 4 hours | 0.6 kWh | $0.105 | $3.15 | $38.33 |
| 5 hours | 0.75 kWh | $0.131 | $3.94 | $47.91 |
| 6 hours | 0.9 kWh | $0.158 | $4.73 | $57.49 |
| 7 hours | 1.05 kWh | $0.184 | $5.51 | $67.07 |
| 8 hours | 1.2 kWh | $0.21 | $6.30 | $76.65 |
| 9 hours | 1.35 kWh | $0.236 | $7.09 | $86.23 |
| 10 hours | 1.5 kWh | $0.263 | $7.88 | $95.81 |
| 11 hours | 1.65 kWh | $0.289 | $8.66 | $105.39 |
| 12 hours | 1.8 kWh | $0.315 | $9.45 | $114.98 |
| 13 hours | 1.95 kWh | $0.341 | $10.24 | $124.56 |
| 14 hours | 2.1 kWh | $0.368 | $11.03 | $134.14 |
| 15 hours | 2.25 kWh | $0.394 | $11.81 | $143.72 |
| 16 hours | 2.4 kWh | $0.42 | $12.60 | $153.30 |
| 17 hours | 2.55 kWh | $0.446 | $13.39 | $162.88 |
| 18 hours | 2.7 kWh | $0.473 | $14.18 | $172.46 |
| 19 hours | 2.85 kWh | $0.499 | $14.96 | $182.04 |
| 20 hours | 3 kWh | $0.525 | $15.75 | $191.63 |
| 21 hours | 3.15 kWh | $0.551 | $16.54 | $201.21 |
| 22 hours | 3.3 kWh | $0.578 | $17.33 | $210.79 |
| 23 hours | 3.45 kWh | $0.604 | $18.11 | $220.37 |
| 24 hours | 3.6 kWh | $0.63 | $18.90 | $229.95 |
How we worked it out
- Energy per hour: 150 W ÷ 1,000 = 0.15 kWh
- Cost per hour: 0.15 kWh × $0.175 = $0.026
- Cost per day: × 0.3 hours = $0.008
- Month and year: × 30 days = $0.236, × 365 days = $2.87
What it costs in different places
Same 150-watt hair straightener, 0.3 hours a day. Only the local electricity rate changes.
| Place | Rate per kWh | Cost per month |
|---|---|---|
| United States | $0.175 | $0.236 |
| California | $0.32 | $0.432 |
| Texas | $0.155 | $0.209 |
| New York | $0.25 | $0.338 |
| Florida | $0.155 | $0.209 |
| Illinois | $0.17 | $0.23 |
| Pennsylvania | $0.18 | $0.243 |
| Ohio | $0.17 | $0.23 |
| Washington | $0.115 | $0.155 |
About hair straightener running costs
Hair straighteners use modest power. Most is spent on heat-up.
Typical sizes: 50 W, 100 W, 150 W, 200 W.
How to spend less: Switch off as soon as you finish styling.
What this estimate assumes
- The appliance draws its full stated wattage the whole time it is on. Real units with a thermostat cycle off and cost less.
- Wattage is the typical label value, not a measured value. Check the label on your own appliance.
- The rate is an approximate residential average. Your bill may include fixed fees, tiers or time-of-use pricing. Edit the rate above.
- A month is 30 days and a year is 365 days.