Damage Reduction

Damage Reduction is a derived statistic in Fallout 3 and Fallout 76.

Overview

Damage Reduction reduces incoming damage by a set percentage, stacking multiplicatively with other effects. It modifies the damage before it has been reduced by the relevant Damage Resistance stat.

If a player has Dodgy 3 (-30%) and Lone Wanderer 3 (-20%) equipped, an incoming attack will be reduced by 44%.

DMG_f = DMG_i * 0.70 * 0.80

Fallout 76

Armor

• Power armor passive (-7% per part, stacking additively)
• Acrobat's armor (-50% per part, stacking additively)
• Assassin's armor (-8% per part, stacking additively)
• Cavalier sprinting armor (-15% per part, stacking additively)
• Cavalier blocking armor (-15% per part, stacking additively)
• Exterminator's armor (-15% per part, stacking additively)
• Ghoul slayer's armor (-15% per part, stacking additively)
• Hunter's armor (-15% per part, stacking additively)
• Mutant slayer's armor (-15% per part, stacking additively)
• Troubleshooter's armor (-15% per part, stacking additively)
• Sentinel armor (-15% per part, stacking additively)
• Zealot's armor (-15% per part, stacking additively)

Perks and mutations

• Dodgy (-10/20/30%)
• Fireproof (-15/30/45% fire and explosion only)
• Lone Wanderer (-10/15/20%)
• Blocker (-15/30/45% melee only)
• Empath mutation (-25% for teammates, +33% for player)

Fallout 76 magazines

• Astoundingly Awesome Tales #8
• Live & Love #9
• Scouts' Life #1
• Scouts' Life #2
• Scouts' Life #7
• Tesla Science Magazine #1
• Tesla Science Magazine #2
• U.S. Covert Operations Manual #3

Aid

• Cola perk bubblegum
• Nuka-Cola Vaccinated/Scorched/My Blood's In It (-15%)

Notes

• Every modifier except for Acrobat's is multiplicative, meaning a damage reduction value of 100% is not possible.
• Serendipity does not use damage reduction; instead, it uses a unique resistance mechanic called damage evasion.
  • Damage evasion multiplies the incoming damage by 0, completely nullifying damage.