What are the XP levels for units in Civ 5?

Is there a table or formula to specify what the XP "steps" are for units in Civilization 5?

For example, if a unit will receive +30 XP from military buildings, how can I tell what level it will be?


Solution 1:

The promotion costs for the next level can can be calculated by Previous level XP + (10 * Next level)

  • So for level 1 : 0 + (10 * 1) = 10
  • Level 2 : 10 + (10 * 2) = 30
  • Level 3 : 30 + (10 * 3) = 60
  • Level 4 : 60 + (10 * 4) = 100

And so on.

Source : Civ fanatics forum