This calculator is created for V14 of War of Empires. It automatically calculates the max siege you can use for your troops according to level and gets the appropriate ranking points. Bonuses are factored in for race, experience, research and forge/armoury.
IMPORTANT: siege is optimized for levels above 12, using Trebuchets only. If you have a siege factory of level 12 and below, then it's likely you can get slightly better results using Armoured Siege Towers and Ballistae.
I accept no responsibility for the results this calculator gives you. However, you can inspect my code in the plain text version. There are currently no known issues.