Radiation Resistance

Radiation Resistance is a derived statistic in Fallout, Fallout 2, Fallout 3, Fallout: New Vegas, Fallout 4, and Fallout Tactics.

It reduces radiation damage by a percentage.

Rad-X temporarily increases Radiation Resistance.

Fallout, Fallout 2, Fallout: New Vegas, Fallout Tactics

 * $$\text{Initial level}=\text{Endurance}\times2$$

Temporarily increasing Radiation Resistance

 * The space suit increases Radiation Resistance +40% while worn.

Fallout 3

 * $$\text{Initial level }%=(\text{Endurance}-1)\times2$$

Example: A starting Endurance of 5.


 * $$(5-1)\times2=8\%$$

Permanently increasing Radiation Resistance

 * The Cyborg perk gives +10% Radiation Resistance.
 * The Rad Resistance perk gives +25% Radiation resistance.
 * The Survival Expert perk gives between +2% and +6% Radiation resistance.
 * The Pitt Fighter perk from The Pitt gives +3% Radiation Resistance.
 * The Booster Shot perk from The Pitt gives +10% Radiation Resistance.

Temporarily increasing Radiation Resistance

 * The Rad-X drug gives up to +75% Radiation Resistance with the Medicine skill at 100.
 * The advanced radiation suit, the environment suit, Lesko's lab coat, Filtration helmet, radiation suit and the modified utility jumpsuit will all increase Radiation Resistance while worn.
 * All power armor (other than tribal power armor) has some Radiation Resistance, some more than others.

Fallout 4
Radiation resistance is set to return in the upcoming Fallout 4. However, it appears to have a different mechanic as its value can be seen as high as 150 on power armor and as high as 1000 on Hazmat suit.

Strahlungsresistenz (Statistik) Résistance aux Radiations Odporność na promieniowanie Сопротивляемость радиации