Electricity prices vary by country and tariff, and appliance labels do not all present energy use the same way. This calculator lets you use the number you actually have: watts for equipment that runs for a set time, or kWh per cycle / per 100 cycles for appliances such as washing machines.
Estimated energy use
How it is calculated: in wattage mode, kWh = watts × hours ÷ 1000. In cycle mode, the label’s kWh figure is used directly, or divided by 100 when the label is stated per 100 cycles.
Treat this as an estimate. A wattage label is usually a rated or maximum input, not a promise that the machine draws that power every second. Washing-machine energy also changes with programme, temperature, load and options. For the closest estimate, use a measured kWh figure or the energy figure for the exact programme you normally use.
Use the figure that belongs to your machine
For a treadmill, walking pad, elliptical or exercise bike, look for input power or rated power on the rating plate or in the manual. For a washing machine, the energy label or manual may state kWh per cycle or kWh per 100 cycles. Add the unit electricity rate from your bill to turn energy use into a cost estimate.
Rated wattage is not always the same as average real-world draw, so a plug-in energy meter or a measured kWh figure will give a closer result when you need precision.