OSRS Combat Calc

OSRS Strength Damage Calculator

Find the next ordinary melee damage breakpoint. This page compares your current visible Strength and total Strength bonus, then searches for the smallest increase in either input that raises your maximum hit.

Calculate your result

Adjust the fields to calculate your result.

Model limits: Standard melee attacks only. Boost decay, Void, Slayer and Salve effects, special attacks and unusual weapons are excluded. The current visible level already includes your potion boost; do not add it twice. The prayer selector does not enforce account unlocks.

How OSRS Strength Damage Calculator Works

To use the OSRS Strength Damage Calculator, enter your visible Strength level, Strength bonus, prayer and style, then read your max hit and the next damage breakpoint.

  1. Enter your visible Strength level, including potion boosts.
  2. Enter your total equipment Strength bonus.
  3. Pick your offensive prayer: none, Ultimate Strength, Chivalry or Piety.
  4. Pick your Strength style bonus: aggressive, controlled or accurate.
  5. Read the current max hit, the next Strength level and the next Strength bonus that raise it.

OSRS Strength Damage Calculator Formula

The OSRS Strength Damage Calculator formula is Max hit = ⌊0.5 + Effective Strength × (Strength bonus + 64) ÷ 640⌋.

Effective Strength = ⌊Strength level × prayer⌋ + style bonus + 8
Max hit = ⌊0.5 + Effective Strength × (Strength bonus + 64) ÷ 640⌋
Next breakpoint = lowest Strength level or bonus where max hit rises by 1

  • Prayer multiplies Strength by 1.15 (Ultimate Strength), 1.18 (Chivalry) or 1.23 (Piety).
  • Style bonus adds 3 for aggressive, 1 for controlled and 0 for accurate or defensive.
  • The 8 is a fixed bonus added to every effective level.
  • Breakpoints change 1 input at a time and keep the other inputs fixed.

OSRS Strength Damage Calculator FAQ

What is a max hit breakpoint in OSRS?

A max hit breakpoint is the exact Strength level or Strength bonus where your max hit goes up by 1. Levels between 2 breakpoints give the same max hit.

Does every Strength level increase max hit?

No, not every Strength level increases max hit. Max hit rounds down, so 2 or 3 Strength levels often give the same number.

How much does Piety increase max hit?

Piety increases effective Strength by 23%. At 118 boosted Strength and +100 Strength bonus, Piety raises the max hit from 33 to 40.

Which attack style gives the highest max hit?

The aggressive style gives the highest max hit, with +3 effective Strength. Controlled adds 1 and accurate or defensive adds 0.

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