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How is AP calculated?

2026-08-26 2 min read
Short answer

Two things set your AP: your weapon's AP value and your main stat. The formula is: level + (weapon AP × total stat / 30). Wolf adds 20% to the result, WES gives the right-hand weapon +5 AP and adds +1 to the result.

The formula

Base = level + (weapon AP × total stat / 30)

AP = base × (1 + percent bonus) + WES extra

The game rounds down at every step. So if it comes out 1953.6 you see 1953 on screen.

Without a weapon the base is just your level. The moment you pick up a weapon the multiplication kicks in and the number jumps.

What makes up the total stat

  • Your character's main stat. This changes by class.
  • Stat bonus from accessories and the set.
  • Rebirth. Every rebirth gives you +2 stat. An 83/10 character means +20 stat.
  • The three are added and go into the formula as a single number.

Which class counts which stat

Class Main stat Weapon type
Warrior STR Spear, sword, axe, mace, club
Rogue (Assassin) DEX Dagger, dual
Rogue (Archer) DEX Bow
Priest (STR BP) STR Club, sword, spear, mace
Priest (INT BP) INT Club (Smite Hammer, Ruahue)
Mage STR Staff
Kurian STR Jamadar, sword, axe, spear

A Mage's AP depends on STR, not INT. The reason is simple: you hit with the staff, and that hit is physical.

Worked example: Warrior, Raptor +8, 300 STR

  1. Raptor +8 has a weapon AP of 187. This value comes from the game's item data, not a guess.
  2. 187 × 300 = 56,100. Divide by 30, that's 1,870.
  3. Add the level: 83 + 1,870 = 1,953 AP. That's the result without buffs.
  4. Turn on Wolf and it's 1,953 × 1.20 = 2,343 AP.
  5. Cast WES and the right hand counts as 192 instead of 187: 83 + (192 × 300 / 30) = 2,003, plus +1 on the result, 2,004 AP.
  6. With both on, 2,404 AP.

The real contribution of the buffs

Case AP Difference
No buffs 1,953 —
Wolf only 2,343 +390
WES only 2,004 +51
Wolf + WES 2,404 +451

Based on Warrior 83, Raptor +8, 300 total STR. Because Wolf works as a percentage, the more AP you have the more it gives. WES is a fixed extra.

The left-hand weapon counts half

Assassins wear dual daggers, Warriors and Kurians can dual-wield one-handed weapons. In that case the right hand counts in full, the left hand half.

Example with two Shard +8: each is 101 AP. Right hand 101, left hand half of 101, which is 50. Weapon power becomes 151.

With 300 DEX: 83 + (151 × 300 / 30) = 1,593 AP.

WES behaves a bit differently on Assassin. It gives +5 to the right dagger and +3 to the left. Since the left hand still counts half, only half of that +3 helps you.

How much AP 1 stat brings

Weapon AP 1 stat 1 rebirth (2 stat) 83/10 (20 stat)
93 (Iron Bow +8) +3 +6 +62
137 (Raptor +0) +4 +9 +91
187 (Raptor +8) +6 +12 +124
205 (Raptor +9) +6 +13 +136

No buffs, level 83, 300 stat. The higher the weapon AP, the more AP the same stat point brings. The two are multiplied, not separate.

Don't get stuck on weapon versus stat. Because the formula is a product, each one grows the other; invest in whichever is lagging.

Frequently asked

Yes. Wolf grows the result by 20%, WES also adds +5 to the right-hand weapon's AP and +1 to the result. With Raptor +8 and 300 STR the two together take 1,953 to 2,404.

Every rebirth gives +2 stat. On an 83/10 character that's +20 stat. If you carry a Raptor +8 that's about +124 AP. With a weak weapon the number shrinks too.

It does, but a little. Level is added straight to the base, it doesn't go into the multiplication. On a level 83 character with about 2,000 total AP, level's share is 83.

Not as much as the right hand, because the left hand counts half. A 10 AP gain on the left goes into the math as 5 AP. If your budget is tight, upgrade the right hand first.

The most common reason is entering the total stat incompletely. You also have to add the stat bonus from accessories and the set. And don't forget the +2s from rebirth.
Do the math
AP Calculator Calculate your own character with the real AP of 380 weapons Item Compare Put two weapons side by side with the same stat Anvil See what one more plus costs before you go for it
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Knight Online stat distribution: where do 302 points go? Knight Online Warrior skills: which skill needs how many points, at what level? Raptor or Iron Impact? How high can an item be upgraded?