Coil Genius

The Ingenious Coil Calculator


Coil Genius is a tool to calculate coils of wire around a cylindrical rod/bit.


  • Visual coil editor
  • Keyboard-less design
  • Supports SI (metric) and USCS (imperial) units
  • Shows resistance, wire length, surface, coil width & weight
  • Kanthal, Nichrome, Stainless, Titanium & Nickel wires
  • Single/Dual/Triple/Quad coils
  • Parallel/Twisted wire (two strands)
  • AWG or mm (diameter) wire sizes
  • Power simulation
  • Set voltage/amperage range supported by your Mod in settings
  • Shows voltage & amperage at coil
  • Displays heat-up rate and heat flux
  • Adjust temperature for temperature sensing coils (Titanium/Nickel)
  • Save your favorite coils for later use
  • Share your coils via Mail, Twitter, Facebook, ...
  • Custom Wire Types (In-App Purchase)


Coil Genius for iPhone is available on the App Store.

Download on the App Store


Feel free to contact us to provide some feedback,
give us suggestions for new features,
or to just say hello!