WattPeekGaming PC electricity cost calculator
A power supply labelled 750W does not mean your PC constantly consumes 750W. Actual wall power changes with the game, components, frame-rate cap and idle time. Add your monitor separately or include it in the measured wattage.
Calculate gaming pc costs ↗Start with your actual usage
- Use a plug-in energy meter for a representative gaming session.
- Include monitors and other equipment if you want the total setup cost.
- Calculate gaming and idle time separately when they draw different amounts of power.
A worked example
The following uses an illustrative rate of 0.25 currency units per kWh. It is not a current country tariff or a measured average for this appliance.
| Input / result | Example |
|---|---|
| Average input power | 350 W |
| Daily use | 4 hours |
| Energy per day | 1.4 kWh |
| Cost per day | 0.35 currency units |
| Cost for 30 days | 10.50 currency units |
What this estimate leaves out
350W is an illustrative system draw, not a measured average. Use wall-meter readings; a PSU rating is its capacity. Fixed charges are excluded. Time-of-use rates and tiered pricing need separate calculations. Annual results assume the same daily use for all 365 days, which can overstate seasonal appliance use.
How to calculate it yourself
watts ÷ 1,000 × hours × price per kWhIf you already know the energy used, multiply measured kWh directly by your unit price. See the full methodology.