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OSRS Max Hit Calculator

Work out your melee max hit in Old School RuneScape from your Strength level, gear strength bonus, prayer and attack style — the same formula the game uses.

OSRS Max Hit Calculator

Melee max hit (before special attacks or set effects). 🔒 Calculated in your browser.

🔒 Nothing you enter is sent anywhere or stored. All processing happens in your browser.

Features

The exact melee formula

Uses the official effective-Strength and max-hit equations, so the number matches in-game.

Compare gear and prayers

See how a higher Strength bonus, a better potion or Piety changes your max hit before you buy anything.

Potion and prayer presets

Pick Super strength, Overload, Piety and more from a dropdown — no maths required.

Instant and private

Recalculates as you change any option; nothing is uploaded.

How it works — in four simple steps

No signup, nothing to install — it all runs in your browser.

Step 01

Enter your Strength level

Type your Strength and your equipment's total Strength bonus.

Step 02

Pick potion and prayer

Choose your Strength potion and prayer from the dropdowns.

Step 03

Choose your style

Aggressive gives +3, controlled +1, accurate/defensive +0.

Step 04

Read your max hit

See your max hit, effective Strength and boosted level.

How it works

Your melee max hit in OSRS comes from your effective Strength and your weapon's Strength bonus. First the game works out effective Strength: take your Strength level (plus any potion boost), multiply by your prayer bonus and round down, then add a style bonus (+3 aggressive, +1 controlled) and +8. Then the max hit is ⌊0.5 + effectiveStrength × (equipmentStrengthBonus + 64) ÷ 640⌋.

This calculator applies that formula so you can compare weapons, prayers and potions before you commit to gear. Enter your Strength level, the Strength bonus from your equipment (shown in your equipment stats screen), your potion and prayer, and your attack style. It's for standard melee — special attacks, the Dharok effect and slayer/void bonuses change things and aren't included.

Everything runs in your browser.

Examples

99 Strength, +100 gear bonus, Super strength, Piety, Aggressive → max hit 40.
Drop the Strength bonus to 0 and it falls to the low teens — gear matters as much as level.

Frequently asked questions

How is OSRS max hit calculated?
Effective Strength = ⌊(Strength + potion boost) × prayer bonus⌋ + style bonus + 8. Max hit = ⌊0.5 + effective Strength × (equipment Strength bonus + 64) ÷ 640⌋. This tool does both steps.
Where do I find my equipment Strength bonus?
Open your worn-equipment stats in game — 'Melee Strength' under the bonuses is the number to enter.
Does this include special attacks?
No. It's the standard melee max hit. Special attacks, the Dharok's set effect, Void, slayer helm and similar multipliers change the result and aren't modelled here.
How much does Piety add?
Piety gives +23% to your Strength level before the max-hit calculation, which is usually a few extra damage at high levels — try toggling it here to see.
Is this for melee only?
Yes — this calculates melee max hit. Ranged and Magic use similar but separate formulas.