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Fire Emblem: Radiant Dawn
Calculations

Credits: Pegasus Knight

Notes: Any fractions are omitted

Double attack

Property
 Calculations
Attack Speed  = Speed - (Weapon Weight - Strength, take as 0 if negative)

Double attack if: (Attack Speed - enemy's Attack Speed) >= 4

Damage

Property
 Calculations
Physical damage  = Strength + [(Weapon Might + Weapon triangle bonus) x Effective coefficient] + Buddy support bonus + Height bonus
Physical defence  = Defence + Buddy support bonus + Terrain Bonus
Magical damage  = Magic + [(Weapon Might + Weapon triangle bonus) x Effective coefficient] + Buddy support bonus + Height bonus
Magical defence  = Resistance + Buddy support bonus + Terrain bonus
Damage  = [(Physical damage - enemy's Physical defence) or (Magical damage - enemy's Magical defence)] x Critical coefficient

Weapon triangle bonus: +1 if weapon is good against enemy's weapon, -1 if bad against enemy's weapon
Physical weapon triangle: Swords > Axes > Lances > Swords
Magical weapon triangle A: Fire > Wind > Thunder > Fire = Anima
Magical weapon triangle B: Anima > Light > Dark > Anima
(">" means is "strong against")

Effective coefficient: 3 if weapon is effective against enemy, 1 if not
Buddy support bonus: 0 to +3, depending on the support type and level
Height bonus: +2 if above enemy, 0 if below or on same plane as enemy
Terrain bonus: 0 to +10, depending on terrain type
Critical coefficient: 3 if critical is successful, 1 if not

Note 1: If using a Crossbow, Strength = 0
Note 2: In Hard mode, Weapon triangle bonus = 0

Accuracy

Property
 Calculations
Accuracy  = Weapon Hit + (Skill x 2) + Luck + Weapon triangle bonus + Biorhythm bonus + Buddy support bonus + Leadership bonus + Affinity bonus + Height bonus
Avoid  = (Attack Speed x 2) + Luck + Biorhythm bonus + Buddy support bonus + Terrain bonus + Leadership bonus + Affinity bonus
Battle accuracy  = Accuracy - enemy's Avoid [lowest value is 0, highest value is 100] [%]
Staff accuracy  = ? [%]

Weapon triangle bonus: +10 if weapon is good against enemy's weapon, -10 if bad against enemy's weapon
Biorhythm bonus: +10 if arrow is pointing at highest, +5 if pointing at high, -5 if pointing at low and -10 if pointing at lowest
Buddy support bonus for Accuracy: 0 to +54 depending on support type and level
Buddy support bonus for Avoid: 0 to +45 depending on support type and level
Leadership bonus: = +[(Number of commander's Authority stars) x 5] for all units with the same affiliation as the commander
Affinity bonus: +5, if user has same affinity as the map
Height bonus: +50 if above enemy, -50 if below enemy
Terrain bonus: 0 to +10 depending on terrain type

Note 1: In Hard mode, Weapon triangle bonus = 0
Note 2: In Hard mode, Affinity bonus = 0
Note 3: If attacking from 3 Range, Accuracy -30

Critical

Property
 Calculations
Critical rate  = Weapon Critical + (Skill / 2) + Bond support bonus + Critical bonus
Dodge  = Luck + Bond support bonus
Battle critical rate  = Critical rate - enemy's Dodge [%]

Bond support bonus: 0 to +10 depending on support type
Critical bonus: See class chart

Skill activation

Property
 Calculations
Activation rate
  = Specific skill activation rate + Biorhythm bonus [%]

Specific skill activation rate: Please view the Skills list
Biorhythm bonus: +10 if arrow is pointing at highest, +5 if pointing at high, -5 if pointing at low and -10 if pointing at lowest

Rescue and Shove

Rescue if: (Weight - 2) >= other unit's Weight
Shove if: (Con + 2) >= other unit's Weight

Note 1: Only units with the Shove skill can shove
Note 2: Mounted units cannot be rescued

Stealing

Steal if: Attack Speed > enemy's Attack Speed and Strength > enemy's item Weight

Note 1: User must have the Steal skill to steal items (obviously)
Note 2: Equipped and/or locked weapons cannot be stolen

Finding desert items

Property
 Calculations
Success rate
  = Skill + Thief Bonus + Biorhythm bonus [%]

Thief Bonus: 60 if user is a Thief, Rogue or Whisper
Biorhythm bonus: +20 if arrow is pointing at highest, +10 if pointing at high, -10 if pointing at low and -20 if pointing at lowest

Weapon Ranks

Weapon Rank
 Required WEx
 Total WEx
- to E
 1
 1
E to D
 30
 31
D to C
 40
 71
C to B
 50
 121
B to A
 60
 181
A to S
 70
 251
S to SS
 80
 331

Note 1: Weapon EXP is not obtained for extra attacks caused by Brave weapons, Adept, Astra, etc.
Note 2: Weapon EXP is obtained even if no damage is done or the attack misses
Note 3: Maximum Weapon Ranks are determined by class.

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