Inductor is an electrical component that stores energy in magnetic field.
The inductor is made of a coil of conducting wire.
In an electrical circuit schematics, the inductor marked with the letter L.
The inductance is measured in units of Henry [L].
Inductor reduce current in AC circuits and short circuit in DC circuits.
Inductor picture
Inductor symbols
Inductor |
![]() |
Iron core inductor |
![]() |
Variable inductor |
![]() |
Inductors in series
For several inductors in series the total equivalent inductance is:
LTotal = L1+L2+L3+...
Inductors in parallel
For several inductors in parallel the total equivalent inductance is:
Inductor's voltage
Inductor's current
Energy of inductor
AC circuits
Inductor's reactance
XL = ωL
Inductor's impedance
Cartesian form:
ZL = jXL = jωL
Polar form:
ZL = XL∠90º
Currently, we have around 929 calculators and conversion tables to help you "do the math" quickly in areas such as:
- Free online calculators and tools
- Free online units conversion tools
- Free online web design tools
- Free online electricity & electronics tools
- Mathematics
- Online tool
- Text tool
- PDF tool
- Code
- Ecology
- Basic Electrical Terms
- Electrical & Electronic Units
- Electronic Components
- Electrical & Electronic Symbols
- Electronic Circuit Laws
- Resistor
- Capacitor
- Inductor
- DIP switch
- Solder bridge
And we are still developing more. Our goal is to become the one-stop, go-to site for people who need to make quick calculations or who need to find quick answer for basic conversions.
Additionally, we believe the internet should be a source of free information. Therefore, all of our tools and services are completely free, with no registration required. We coded and developed each calculator individually and put each one through strict, comprehensive testing. However, please inform us if you notice even the slightest error – your input is extremely valuable to us. While most calculators on Justfreetools.com are designed to be universally applicable for worldwide usage, some are for specific countries only.