Many devices,
one calculator
Calculate the electricity costs of everyday devices
From kettles and washing machines to TVs – TinyTools helps you quickly understand how much electricity your devices really cost. Simple, clear and free.
Electricity cost calculator
Get your answer quickly
Choose a device or enter your own values.
TinyTools uses typical values that you can adjust to match your usage.
Typical value – check the rating on your device if possible.
Suggested starting value – adjust it to match your usage.
You can find your electricity price on your electricity bill.
Decimal values are also possible, for example 0.5 for roughly every second week.
Kettle costs you
EstimatePer use
€0.03
Per week
€0.49
Per month
€2.12
Consumption/year
72.8 kWh
💡 Energy-saving tip
Only heat as much water as you actually need.
The calculation uses power × usage duration as an estimate. For devices whose power consumption varies during operation, actual electricity consumption may differ.
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Free
Use the calculator without signing up or paying hidden fees.
Easy to understand
See costs per use, week, month and year at a glance.
Flexible
Use our typical values or enter your own measured consumption.
How it works
From watts to euros – without the maths
TinyTools handles the conversion for you and shows the result in values that make sense in everyday life.
Choose a device
Select a typical household device or create your own.
Adjust your usage
Set your electricity price, running time and usage frequency to match your routine.
Understand the cost
TinyTools calculates your estimated electricity consumption and the resulting cost.
Two ways to calculate
Get a quick estimate or calculate more precisely
Choose whether you want to start with our typical values or use your own electricity consumption figure.
Frequently asked questions
Questions about TinyTools
How accurate is the electricity cost calculator?+
In the “Choose a device” mode, TinyTools uses typical consumption values together with your usage details, so the result is an estimate. Under “Your own values”, you can enter a measured or known electricity consumption per use.
Where can I find the power rating of my device?+
The power rating in watts is often shown on the device label, power adapter or in the instruction manual.
Where can I find my electricity price?+
For the calculation, you need your electricity price per kilowatt-hour. You can usually find it on your electricity bill or in your tariff information.
Why can the actual electricity cost be different?+
Programs, temperature settings, the age of the device and your actual usage can all affect electricity consumption.
Can I calculate a device that is not in the list?+
Yes. Choose “Custom device” and enter the power rating and usage yourself.
What does your device really cost?
With just a few details, you can quickly understand its electricity consumption and cost.