Power Consumption Of An External Hard Disk

An external hard disk uses approximately 4 to 8 watts; on average, it operates for about 8 hours a day.

Enter the number of usage hours and power setting (in wattage), then click "Calculate" to find the power consumption of external hard drive using 8 watts for 8 hours a day at Pound £0.14 pence per kWh. You will also see the running cost per hour, day, week, and year.