A “Giant” sub at Jersey Mike’s is about 14–15 inches long, roughly double the size of their regular sub.

Quick Scoop

  • Length: About 14–15 inches from end to end.
  • Compared to other sizes:
    • Mini: Around 4–5 inches.
* Regular: Around 7–7.5 inches.
  • Calories (very rough range): A Giant often lands around 1000–1200 calories depending on fillings and toppings.

If you’re picturing it in real life, it’s a little bigger than a typical “footlong” from other chains, which tend to be around 12 inches.

Information gathered from public forums or data available on the internet and portrayed here.