XP Calcs
Melee damage formula

OSRS Max Hit Calculator

Calculate a standard melee maximum hit from visible Strength and manually entered modifiers. The result uses the explicit effective-level formula.

Enter stats and bonuses

Loads public levels; manual entry always remains available.

Maximum hit

28

How it works

Effective Strength applies the prayer multiplier to visible Strength plus boost, floors it, then adds stance and eight. The damage expression adds 64 to equipment strength bonus and floors the complete result. Special weapons, set effects, target weaknesses and raid scaling can add their own multipliers after this baseline.

max hit=⌊0.5+effective Strength×(strength bonus+64)640⌋\text{max hit} = \left\lfloor 0.5 + \frac{\text{effective Strength} \times (\text{strength bonus} + 64)}{640} \right\rfloor
Inputs are kept at full precision. Discrete counts round up when a partial action cannot complete the goal; probabilities and rates keep their fractional meaning.

Worked example

At 99 Strength with 118 strength bonus, no boost, no prayer and an aggressive stance bonus of three, effective Strength is 110 and the maximum hit is 31.

Interpreting the result

Start by checking that each field describes the same scenario as the result: levels are visible base levels, bonuses are entered separately, costs are per unit, and a one-in-X rate means one divided by X on each eligible roll. The calculator updates immediately and writes the complete input state into the address bar. “Copy link” preserves those assumptions; “Copy result” copies a short summary rather than the entire method.

Do not treat a rounded count as an hourly rate. A required-action total says how many successful units complete the target under the entered reward. Banking, movement, failed attempts, animation timing, missed ticks and setup changes affect elapsed time. When time matters, measure a representative session with the same method and divide the required count by the observed successful actions per hour.

Economic outputs are arithmetic scenarios rather than live market quotations. Check current item values before buying supplies, include any outputs that can be sold, and consider limits or low-volume price movement. Probability outputs describe repeated independent trials; they do not promise that a result arrives at the displayed attempt count. The visible formula is the authority for what this page includes.

Read this as a planning estimate. Game updates, equipment effects, failures, travel, downtime and live prices can move a real session away from the mathematical result. Check the inputs against the account and use the output as a reproducible baseline.

Questions about OSRS Max Hit Calculator

Is aggressive stance included?
Yes. The default stance bonus is three and can be changed in the URL-synced inputs.
Does strength bonus mean Strength level?
No. It is the equipment strength bonus shown in the worn equipment interface.
Are special attacks included?
No. This is the ordinary melee max-hit formula before weapon-specific effects.

Sources

Mechanics and fixed tables were reviewed in 2026. Price-like inputs are user-controlled or approximate rather than live quotes. Source links name the public reference used for the page; the visible formula states the exact implementation.

  1. Old School RuneScape Wiki — Experience — Public XP table and level formula, reviewed 2026.
  2. Old School RuneScape Wiki — Combat level — Seven-stat combat-level formula, reviewed 2026.
  3. Old School RuneScape Wiki — Maximum melee hit — Effective Strength and maximum-hit formula, reviewed 2026.
  4. Old School RuneScape Wiki — Attack roll — Accuracy and defence-roll mechanics, reviewed 2026.
  5. Old School RuneScape Wiki — Calculators — Public skill, activity and reward tables, reviewed 2026.

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Combat levelCombine seven combat stats.XP calculatorConvert XP, levels and actions.Drop-rate calculatorMeasure a dry streak.DPS calculatorEstimate accuracy and damage.

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