Stats For Druid Tanks

Strength – provides attack power
1 Str = 2.37864 AP (2.616504 AP) (Cat)
1 Str = 2.1624 AP (2.37864 AP) (Bear)
1 Str = 2.292144 AP (2.5213584 AP) (Bear with PotP)

Agility – Main tanking avoidance stat. We are in love with you.
1 Agi = 1.18932 AP (1.308252 AP) (Cat only)
1 Agi = 0.0129744% (0.01427184%) Crit
1 Agi = 0.0225641% (0.0248206%) Dodge
1 Agi = 2.1624 (2.37864) Armor

77.075 (70.068) Agi = 1% Crit
44.318 (40.289)Agi = 1% Dodge

Stamina – Provides health, a major tanking stat.
1 Sta = 10.812 (11.8932) Health (Cat)
1 Sta = 14.8665 (16.35315) Health (Bear)

Intellect – Practically useless for tanking.
1 Int = 19.4616 (21.40776) Mana
1 Int = 0.00778464% (0.0085631%) SpellCrit

125.458 (116.780) Int = 1% SpellCrit

Intellect also increases the amount of health & mana regen you get from Spirit - not very important for ferals

Spirit – Even more useless than Intel for tanking.
Spirit increases you’re out of combat health regen and your out of 5sec rule mana regen - not very important for ferals

Crit Rating – Crit does provide us with increased savage defense procs.. But, don’t stack it, it will come on your rogue leather and weapons most likely anyhow. (Also a decent threat stat)
1 CritRating = 0.022% Crit
45.91 CritRating = 1% Crit

Dodge Rating – We get more dodge from agility, but not a bad stat to pick up on gear. (never gem for it)
1 DodgeRating = 0.0220982% Dodge
45.2525 DodgeRating = 1% Dodge

Haste Rating – Strong single target threat stat... no mitigation use. Only Maul will scale off of it... but maul makes up a pretty hefty chunk of our total damage/threat
1 HasteRating = 0.03965% Haste
25.223 HasteRating = 1% Haste

Hit Rating – lowers your chance to miss. Our hit cap is 263 (8%) or 230 with a Draenai.
1 HitRating = 0.030% Hit
32.79 HitRating = 1% Hit

Cap vs Level 80 mob = 5% Hit = 163.95 HitRating
Cap vs Level 81 mob = 5.5% Hit = 180.34 HitRating
Cap vs Level 82 mob = 6% Hit = 196.74 HitRating
Cap vs Level 83 mob = 8% Hit = 262.32 HitRating (Raid Bosses)

Expertise Rating – Best threat stat per point up till 6.5% then it’s equal with hit.
1 ExpertiseRating = 0.0305% reduction in dodge & parry chance
32.79 ExpertiseRating = 1% reduction in dodge & parry chance

Cap vs Level 80 mob = 5%(Dodge) / ?%(Parry) = 163.95 / ? ExpertiseRating
Cap vs Level 81 mob = 5.5%(Dodge) / ?%(Parry) = 180.345 / ? ExpertiseRating
Cap vs Level 82 mob = 6%(Dodge) / ?%(Parry) = 196.74 / ? ExpertiseRating
Cap vs Level 83 mob = 6.5%(Dodge) / 15%(Parry) = 213.135 / 491.85 ExpertiseRating (Raid Bosses)

The 10 Expertise we get from Primal Precision is equivalent to 81.975 ExpertiseRating so subtract that from the above figures if you have that talent. (which you better)

Defense Rating – Gives a chance for the mob to miss us – (actually starts to pass Agility as a pure avoidance stat at around 50% dodge due to Diminishing returns) Agility is still a better all around stat due to the armor and crit rating it provides up till around 60% dodge
1 DefenseRating = 0.008% dodge and 0.008% chance to be missed and 0.008% reduced chance to be crit (Crit reduction not needed for PvE if you have SotF )
122.96 Defense Rating = 1% chance to dodge and 1% chance to be missed and 1% reduced chance to be crit (Crit reduction not needed for PvE if you have SotF )

1 DefRating = 0.64 DodgeRating (counting misses as dodges)

ArmorPenetration Rating – threat stat.. will come by default on our main gear pieces
1 ArPenRating = 0.07145% ArmorPenetration
13.9957272 ArPenRating = 1% Armor Penetration

ArPen cap (100%) = 1400 ArPen

Resilience – No need for resilience in PvE
94.27125 Resilience = -1% chance to be crit, -2.2% crit damage, -1% all damage & -2.2% mana drain reduction

1414.06872 Resilience = 33% reduction from crit damage = the cap for this part of resilience's effect

Regular (white) Armor – With the changes to druid armor since BC you are in no danger of hitting the armor cap anytime soon and can stack it wherever you can find a place. It’s a phenomenal mitigation stat.
Includes non-bonus armor from all slots except rings, trinkets, neck & weapon. All armor from rings, trinkets, neck & weapon as well as armor patchs & any bonus (green) armor on items & armor from Agi receive no bonus from SotF, Thick Hide or the metagem

1 Armor = 6.251 Armor (Bear)
1 Armor = 6.8761 Armor (Bear with Thick Hide)
1 Armor = 7.013622 Armor (Bear with Thick Hide & Armor Metagem)

Damage Reduction from Armor % = Armor * 100 / (Armor + (467.5 * AttackerLevel - 22167.5))

DR% for Lvl83 Boss mobs = Armor * 100 / (Armor + 16635)

Armor cap (75% DR) for Lvl83 Boss mobs = 49905 Armor