← All tools
inductance
Toroid Inductance Per Turn
Computes inductance, effective core area, effective core length, effective core volume, and flux density per amp for a toroidal core inductor.
Inputs
Height (width) of the toroid core in millimetres
Outer diameter of the toroid core in millimetres
Inner diameter of the toroid core in millimetres — must be less than outer diameter
Relative permeability of the core material — ferrite ≈ 100–10000, iron powder ≈ 10–100
Number of winding turns on the toroid
Results
⚠Inner diameter must be less than outer diameter
Inductance—µHInductance of the toroid in microhenries
Effective Core Area—mm²Effective cross-sectional area of the core in square millimetres
Effective Core Length—mmEffective magnetic path length of the core in millimetres
Effective Core Volume—mm³Effective volume of the core in cubic millimetres
Flux Density per Amp—gauss/AFlux density per ampere of current in gauss per amp