COMPUTER ENERGY CALCULATOR
Gaming PC Electricity Cost Calculator
Estimate daily, monthly, and annual electricity cost using gaming and idle power.
✓ Free✓ Instant results✓ No sign-up
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LIVE CALCULATOR
Updates instantlyCombine gaming and idle power
watts
hours
watts
hours
$/kWh
Formula: Daily kWh = (gaming watts × gaming hours + idle watts × idle hours) ÷ 1,000
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How this estimate works
PC draw changes with the game, frame rate, components, monitors, and power limits.
- Use your equipment data. Check a label, specification sheet, controller, or energy meter.
- Enter your utility rate. A recent bill is more useful than a national average.
- Test different schedules. Change one input at a time to compare scenarios.
Ways to reduce or refine the cost
1
Enable sleep mode instead of leaving the PC idle.
2
Use sensible frame-rate limits and power settings.
3
Measure monitors and accessories separately.
Transparent methodology
Results use the values you enter and standard energy formulas. They are planning estimates, not bills or guarantees.
Frequently asked questions
Does a 750W power supply always use 750 watts?+
No. The rating is output capacity, not constant consumption.
Are monitors included?+
No. Add display energy separately.
How can I get a more accurate number?+
Measure average wall power during representative gaming and idle periods.