What does electrical mean?
Electrical is the common umbrella term for technology and applications involving current, voltage, power, energy and electrical devices.
ELECTRICAL ENGINEERING · MADE SIMPLE
Calculate.
Do not guess.
Six practical electrical calculators plus a CO₂ savings calculator for everyday use, workshops, photovoltaics and electric mobility. Free, fast and no sign-up required.
ENERGY & CO₂
Calculate PV CO₂ savings
Estimated CO₂ savings0.42 t422 kg CO₂e per year · 8,400 kWh
Non-binding estimate. Default: 50.24 g CO₂e/kWh based on the E-Control Electricity Labelling Report 2025. This value is based on electricity labelling with guarantees of origin and does not necessarily represent the physical grid mix. The factor and assumptions can be adjusted. Not a verified greenhouse-gas inventory or ESG advice. Source
FREE ONLINE TOOLS
What would you like to calculate?
Electrical power3.68 kWP = U × I
RELEVANT TO YOUR RESULTMonitor energy intelligentlyExternal providers · Elektro.ing remains independent
QUICK GUIDE
Reliable results start with accurate inputs.
These calculators provide practical estimates. Electrical installations, cable sizing and protection must be handled by a qualified electrician.ELECTRICAL GUIDE
Electrical basics, formulas and practical calculators
Electricity is everywhere: in home energy use, EV charging, photovoltaics and workshops. Elektro.ing combines clear guidance with calculators that put essential electrical values into context.
Essential electrical quantities
Voltage U is measured in volts, current I in amperes, power P in watts or kilowatts and energy in kilowatt-hours. Their relationships underpin the calculators.
Assess electricity safely
Online calculators help with an initial estimate. Electrical installations, protective measures and final sizing belong in the hands of a qualified electrician.
DEDICATED CALCULATOR PAGES
Go directly to the right calculator
CALCULATORS & GUIDES
Electrical calculators for daily life, PV and e-mobility
Calculate electricity costs
Enter consumption in kWh and your electricity price to see the cost immediately.
Calculate EV charging time
Battery size, charge level and charging power provide a practical estimate of charging time.
Calculate voltage drop
Cable length, current, voltage and supply type provide a guide to the required cross-section.
Convert kW to amperes
Compare single-phase and three-phase loads using voltage and power factor.
Calculate PV yield
System size, specific yield and self-consumption show annual output and potential savings.
Calculate PV CO₂ savings
PV output and an adjustable comparison factor provide a transparent estimate of avoided emissions.
Three-phase power
The power calculator includes the √3 factor for three-phase systems and returns kW.
Frequently asked electrical questions
What does electrical mean?
Electrical is an umbrella term for technology and applications involving current, voltage, power, energy and electrical devices.
Which electrical calculators are available on Elektro.ing?
Calculators for power, energy cost, PV yield, EV charging time, voltage drop, kW to amperes and estimated PV CO₂ savings.
How do I calculate electricity costs?
Multiply consumption in kilowatt-hours by the price per kilowatt-hour.
How long does charging an EV take?
Divide the required energy by charging power. Charging losses can increase the actual duration.
Does the calculator replace an electrician?
No. Results are estimates; installation, protection and cable sizing require a qualified professional.