Maximum melee hit

Maximum melee hit is the maximum damage a player can deal in a melee combat. It is affected by player's strength, equipment and other bonuses such as prayer or potions.

Calculating your maximum melee hit
Note: The trunc (truncate) function is used throughout the formula - this simply means ignore any decimal places of the number being truncated.

Step one: Calculate the effective strength
$$Effective\ Strength=trunc((Strength\ Level+PotionBonus)\times Prayer\ Bonus\times Other\ Bonus)+Style\ Bonus$$

See the following table for the various bonuses values:

Remember that if you use the Dragon battleaxe special attack you cannot use another special attack right after unless the recover special attack potion is used or a person casts share energy upon you. Also note that the dragon battleaxe special attack raises your strength depending on the other levels

Step two: Calculate the base damage
$$Base\ Damage=1.3+\frac{Effective\ Strength}{10}+\frac{Strength\ Bonus}{80}+\frac{Effective\ Strength\times Strength\ Bonus}{640}$$

If you are not using a special attack or effect:

$$Max\ Hit=trunc(Base\ Damage)$$

Otherwise, continue to step three.

Step three: Calculate the bonus damage
$$Max\ Hit=floor(Base\ Damage\times Special\ Bonus)$$

The following special attack/effect bonuses apply:

The Keris's maximum hits (against kalphites or scarabites) is as follows:
 * Special cases

$$Max\ Hit_{Keris,\ normal}=floor(Base\ Damage\times 1.25)$$

$$Max\ Hit_{Keris,\ critical}=floor(Base\ Damage)\times 3$$

This results in the maximum documented hit (outside of certain parts of quests) of 126 - using a Keris, a player with 99 strength can hit up to 126 on assigned Kalphites, using the best strength equipment, the Piety prayer, a black mask or a slayer helmet, and drinking a super strength potion.

The Saradomin sword's special attack hit up to an extra 16 magic-based damage:

$$Max\ Hit_{Saradomin\ sword}=floor(Base\ Damage)+16$$

During quests/minigames
In the Dungeon of Tolna during A Soul's Bane quest, players could hit up to 200 on monsters in the rage room, however that damage is simply a player's normal damage times twenty, and doesn't give any experience.

When touching the Stone of Jas, all the combat stats excluding prayer will be boosted to 255. In this case, the max hit is currently unknown. Theoretically it is 230+ using the Dharoks special, however, since touching the stone also makes your hp always stay at 255, it would not work.

In the barbarian assault minigame you can hit a possible of your max hit +5 if your attacker level is 5 on the penance rangers and fighters.