Welcome to Steam Engine, a free suite of calculators for your vaping endeavors: Building coils, checking battery drain, mixing e-juice, and more.


Click the links on top to navigate between the sections:

  • The Ohm's law calculator is a simple Ohm's law calculator with Joule heating.
  • The coil wrapping calculator is specialized for winding coils for rebuildable atomizers (RBA).
  • The battery drain calculator shows you the current and power drain on the battery in your e-cigarette.
  • The mod range calculator tells you the optimal resistance range for your regulated mod.
  • The DIY e-liquid calculator lets you select nic strength and VG/PG ratio for the nicotine base liquid and your desired outcome.
  • The Wire Wizard gives you the ability to mix different wires to customize your coil – and your temperature curve.