- Electricity consumption calculators -

Increase your home efficiency, reduce your carbon footprint and save money

The first step towards reducing our electricity consumption is to increase our knowledge and awarenessof the amount of electricity we are consuming.

For that, there is not better way to increase our awareness than calculating how much electricity we are using and how much money our electricity consumption is costing us.

Before going ahead, we really recommend to first have a look to the Effiworkx YouTube channel videos. On those videos we explain concepts that will be of your interest.

Electricity consumption calculators

1 - Convert Watts to Kilowatt Hours

This calculator can be used to:

– Convert Watts (W) to Kilowatt Hours (kWh)

kWh is the unit of measure used by the electricity suppliers to calculate our electricity bills. Also, most of the big appliances, like the dishwashers or washing machines, rate their consumption in kWh.

 

2 - Power calculator

This calculator can be used to:

– Calculate Power (P) based on Voltage (V) and Current (I).

 

3 - Voltage calculator

This calculator can be used to:

– Calculate Voltage (V) based on Power (P) and Current (I).

 

4 - Current calculator

This calculator can be used to:

– Calculate Current (I) based on Power (P) and Voltage (V).

 

5 - Electricity cost calculator

This calculator can be used to:

– Calculate the electricity cost based on power consumption (Watts) and time (minutes per day).

For example, if a television has a power consumption of 50 Watts and we watch the television two hours per day, we can calculate the electricity cost if we know how much we are paying per kWh.

 

6 - Bulb power consumption calculator

This calculator can be used to:

Calculate the bulb(s) power cost consumption over time

Calculate the savings from replacing incandescent for CFL or LED bulbs

This bulb wattage comparison table can be used as reference for the ‘Power rating’ field on the table:

IncandescentCFLLED
40 W8-12 W4-5 W
60 W13-18 W6-8 W
75 W18-22 W9-13 W
100 W23-30 W16-20 W
 

7 - Device power consumption calculator

This calculator can be used to:

Calculate a device power consumption. E.g. desktop printer, computer monitor, router, television,…

 

8 - Standby power consumption calculator

This calculator can be used to:

Calculate a device power consumption while in standby mode.

E.g. desktop printer, computer monitor, charger,…

Note that a device power consumption in standby mode it is most probably much lower than during normal operation. Therefore, in order to calculate the standby mode power consumption of a device over time, it is necessary to find out the instantaneous power consumption while in standby mode.

 

9 - Electricity cost savings after a percentage reduction

This calculator can be used to:

– Calculate how much electricity and money can be saved if we reduce the electricity consumption by X%.

– Calculate how much electricity and money can be saved if we reduce the heating  consumption by X%.

As an example, tumble dryer balls claim to reduce the drying time by 20%. That means potential savings of 20% on the tumble dryer cycle cost of 20%.

A 20% electricity consumption per cycle may not translate in big saving over short periods of time but it may represent significant saving over a longer period.

 

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