Damage

The Damage statistic listed on individual weapon pages is the base amount of damage inflicted by the weapon. This amount is then modified depending on the player's skills and perks and the extent to which the weapon has been improved by smithing. The calculation is done according to the following formula (as calculated by the play testers on UESP wiki):

displayed damage =	(base damage + smithing increase) * (1 + 0.5 * skill/100) * (1 + perk effects) * (1 + item effects)
Perk Effects =	0.2 * Barbarian/Armsman/Overdraw rank level
Damage =	((Right Hand displayed Damage * (1 + Power Attack Bonus) * (1 + Dual Power Attack Bonus) * (1 + Power Attack Perk) * (1 + Dual Power Attack perk)) * Dual Power Attack Mod) + ((Left Hand displayed Damage * (1 + Power Attack Bonus) * (1 + Dual Power Attack Bonus) * (1 + Power Attack Perk) * (1 + Dual Power Attack perk)) * Dual Power Attack Mod)
Power Attack Bonus =    Dual Power Attack Bonus =   Power Attack Perk =   Dual Power Attack Perk =   Dual Power Attack Mod =	1 if power attacking 0.125 if power attacking with dual weapons 0.25 if power attacking and you have Savage Strike or Devastating Blow 0.5 if power attacking with two weapons and you have Dual Savagery 2/3 for the right and 1/3 for the left hand