Moses' age at death is not explicitly stated in the Bible, but based on his birth and death timelines, it is estimated to be around 120 years old. This is calculated from the fact that Moses was born at the time of Joseph's death in Egypt, and he died during the wilderness wanderings. Some biblical accounts suggest that Moses' age at death may have been slightly different, but a widely accepted estimate is 120 years. It's worth noting that the exact timeline of Moses' life is not consistently recorded across all biblical texts, which can lead to some variations in estimates.