Uluru is estimated to be about 500 million years old, with its initial formation beginning around 550 million years ago.

Quick Scoop

  • Most modern geological sources describe Uluru as roughly 500 million years old.
  • The sediments that became Uluru started forming in an ancient sea about 550 million years ago.
  • Some references give a broader estimate, suggesting up to about 600 million years, but 500 million is the commonly quoted figure today.

Mini timeline

  1. Around 550 million years ago: Sand and mud were laid down on an ancient seabed in central Australia, beginning the rock that would become Uluru.
  1. By about 500 million years ago: These layers had been compressed into sandstone, marking the age usually given for Uluru itself.
  1. Over hundreds of millions of years: Uplift, tilting, and erosion shaped the single massive sandstone monolith we see today.

In everyday terms, when people ask “how old is Uluru,” the accepted answer is that Uluru is about 500 million years old.

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