OSRS Max Hit Calculator | Save & Share Your Builds

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1. Character Stats

2. Boosts & Combat Style

3. Set Bonuses

* Note: Salve Amulet takes priority over Slayer Helm if both are active.

Compare Loadouts

Snapshot your current stats to compare against a different setup.

Setup Str Bonus Max DPS

Understanding the OSRS Max Hit Formula

In Old School RuneScape, your "Max Hit" defines the theoretical limit of damage you can inflict in a single game tick. Unlike other RPGs, OSRS uses accurate integer math where every decimal point is floored. This calculator replicates that exact logic, ensuring your planning is pixel-perfect.

How to Increase Your Max Hit

There are three main levers to pull to increase your damage output:

  • Strength Bonus: This comes from gear (Bandos, Torva, Amulet of Torture). Generally, +4 Strength Bonus equals +1 Max Hit.
  • Prayer Multipliers: Prayers like Piety provide a massive 23% multiplier to your effective level. This is often more valuable than expensive gear upgrades.
  • Set Effects: Items like the Slayer Helmet (i) or Void Knight equipment provide multipliers at the very end of the calculation, compounding your existing damage.

Frequently Asked Questions

Does Slayer Helm stack with Salve Amulet?

No. The game only allows one "damage against specific monster" boost to apply. If you wear both, the Salve Amulet (ei) takes priority (20%) over the Slayer Helm (16.67%). However, both of these DO stack with the Void Knight set bonus.

What is "Effective Strength"?

Effective Strength is your invisible strength level used in the damage formula. It calculates your base level, adds potion boosts, multiplies by prayer, and adds style bonuses (like Aggressive). It is the raw number that determines your damage potential before gear bonuses.

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