If you ever wondered how to do the double headed arrow ↔ in Markdown, simply type ↔. The shortcuts for the other arrows are more common and simpler to memorize!

Here is a simple cheat sheet:

  • Up arrow (↑): ↑
  • Down arrow (↓): ↓
  • Left arrow (←): ←
  • Right arrow (→): →
  • Double headed arrow (↔): ↔

Enjoy!