Fortify calculator

Check armour bonuses, absorption and damage reduction.

Start with your weapons

Select effects active at the same time. Changing filters keeps your selections.

Primary weaponSecondary weapon

0 effectsSelected only

Choose a weapon above, or browse equipment and other effects.

Effective Fortify

Damage type

Physical armour0%

Elemental armour0%

Slash absorption: 0%
Damage reduction: 0%
Selected physical bonus: 0%
Selected elemental bonus: 0%

Armour and effective health

Enter your armour ratings before these bonuses and your maximum health. Effective health uses average physical or elemental absorption.

Base physical armourBase elemental armourMaximum healthEnemy levelPvP formula

Physical armour with Fortify: 2,055.5
Elemental armour with Fortify: 2,055.5
Physical mitigation: 40.29%
Elemental mitigation: 40.29%
Physical effective health: 35,254
Elemental effective health: 35,254

All damage types

Type	Selected	Effective
Slash	0%	0%
Thrust	0%	0%
Strike	0%	0%
Fire	0%	0%
Ice	0%	0%
Nature	0%	0%
Lightning	0%	0%
Arcane	0%	0%
Void	0%	0%
Standard	0%	0%
Siege	0%	0%
Acid	0%	0%

Selected effects (0)

Select an effect to start.

Duration perks

Duration perks extend eligible effects without increasing their strength. Each effect keeps its own duration cap.

Fortified II piecesDuration-perk gear scoreFortified amulet perkProlonged Favor II piecesProlonged Favor gear score

How Fortify is calculated

Armour Fortify increases your armour rating, with an ordinary 200% cap. A 20% armour bonus does not mean 20% less incoming damage. Absorption and damage reduction have separate totals.

Absorption uses a diminishing-return curve above 30% magnitude, then an ordinary 50% cap. Uncapped sources follow the same curve and can set a higher effective total. Damage reduction is a separate additive total.

Select only effects that apply to the incoming attack. For example, physical aversion and elemental aversion have different conditions. The calculator does not automatically decide which conditions are active.

Values follow MrMojitoTV's Fortify S10 tab, version 10.0.0. Select only effects active together; the tool does not validate a complete equipment loadout.

Source spreadsheet