Device Electricity Cost Calculator
Estimate TV, PC or monitor running costs, including standby power.
iTechVora Tools
Device Electricity Cost Calculator
Estimate TV, PC or monitor running costs, including standby power.
Free · No signup · Calculations run in your browser
Ready to calculate
How to use
Enter values from your device specifications or measurements, then select Calculate. Defaults are editable examples. Copy result saves a text summary; Copy link shares your inputs. Reset restores the example.
Methodology
Daily kWh = (active watts × active hours + standby watts × (24 − active hours)) / 1,000. Cost = daily kWh × days × tariff per kWh.
Worked example
100 W for five hours daily plus 1 W standby for 19 hours uses 15.57 kWh in 30 days. At an example INR 8 per kWh, that costs INR 124.56.
Limits and sources
Default values are examples, not a current local electricity tariff or a product rating. A charger or power-supply maximum rating is not measured consumption.
Background reference: Official guidance. The source supports the background concepts; results use the formula above.
FAQ
Where do I find the right wattage?
Use an energy label or a plug-in power meter averaged over representative use. Brightness and workload affect consumption.
More iTechVora tools
Methodology version 1 · Updated October 11, 2026.