How many years difference between 250 BCE and 250 CE?

The difference between 250 BCE and 250 CE is 500 years. BCE (Before Common Era) counts backward from year 1, while CE (Common Era) counts forward from year 1. Therefore, you add the years from 250 BCE to 1 BCE (249 years) and then from 1 CE to 250 CE (250 years), resulting in a total of 499 years between the two points.