This calculator uses the average watt rating (100 Watts) for a Fax Machine. You can input your Fax Machine’s details to calculate the exact usage and cost of your device.
Enter how many hours per day you estimate you run your Fax Machine. If it is less than one hour use a decimal. For example, 30 minutes would be .5 and 15 minutes would be .25.
Input the wattage of your Fax Machine. If you are unsure enter the average wattage for a Fax Machine: 18.
Enter the price per kilowatt-hour (kWh) you pay for electricity. If you are unsure you can use the average rate per kWh in the US (10 cents) or find the the kWh rate in your area here.