The main LEGO Batman movie people mean today is “The Lego Batman Movie” (2017) , and it runs about 1 hour 44 minutes (104 minutes).

If you meant a different LEGO Batman thing, here are the main options:

  • The Lego Batman Movie (2017, theatrical animated film) – Runtime: 1h 44m / 104 minutes.
  • Lego Batman: The Movie – DC Super Heroes Unite (2013, direct‑to‑video) – Runtime: 1h 11m / 71 minutes.
  • LEGO Batman: The Videogame (2008, console/PC game) – Story length varies, but players typically take several hours to finish the main campaign; there is no fixed “runtime” like a movie.

So if your question “how long is lego batman” is about the 2017 movie on streaming or Blu‑ray, plan on roughly 1 hour 45 minutes including credits.

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