More in Daily Frugality
What this calculator does
Many devices draw power even when turned off. This calculator estimates the monthly cost of common phantom loads.
The math
Monthly cost = wattage × 24 hours × 30 days ÷ 1000 × kWh rate. Sum selected devices.
Worked example
A TV, console, computer, and cable box left plugged in at $0.15/kWh can drain several dollars per month.
Why this matters
Small daily habits are the easiest to change and the fastest to compound. This calculator shows the real savings from one swap.
Methodology and transparency
This page publishes the exact formula used to compute the result, so you can verify it in a spreadsheet or check the assumptions against your own situation. The worked example uses the tool default inputs; change any number and the result updates live in your browser. No data is sent or stored.
Common questions
Do all devices drain phantom power?
Most modern electronics draw some standby power. Older devices may draw less.
Should I unplug everything?
Power strips make it easy. Focus on entertainment centers and offices.