How Much Electricity Does A Gaming PC Use?
Typical gaming pc: 400 W for 4 h a day1.6 kWh/day · $9.03/month
A gaming PC with a mid-range graphics card pulls 300–500 W under load and far less when idle. Change the numbers below for your own gaming pc and electricity rate.
W
h
¢/kWh
Default rate: US average residential rate of 18.56¢/kWh (EIA, March 2026, via Jouleio). Your bill shows your own rate per kWh.
Result–
Gaming PC running cost by hours
| Hours a day | kWh a month | Cost a month | Cost a year |
|---|---|---|---|
| 1 | 12.2 | $2.26 | $27.1 |
| 2 | 24.3 | $4.52 | $54.2 |
| 4 | 48.7 | $9.03 | $108.39 |
| 6 | 73 | $13.55 | $162.59 |
| 8 | 97.3 | $18.07 | $216.78 |
| 12 | 146 | $27.1 | $325.17 |
| 24 | 292 | $54.2 | $650.34 |
At the US average residential rate of 18.56¢/kWh (EIA, March 2026, via Jouleio).
Other appliances
Questions
How much does it cost to run a gaming pc?
About $9.03 a month for 4 hours a day at 400 W and 18.56¢ per kWh.
How can I measure the real usage?
A plug-in energy meter shows the actual kWh an appliance uses over a few days, which is more accurate than the label rating.