Max Hit Calculator OSRS

Discover your highest possible hit in Old School RuneScape. This calculator instantly shows your maximum damage with any combat style, weapon, prayer, potion, and situational bonus combination. or use the main construction calculator OSRS to plan your full 1-99 journey.

Key Features

• Calculate your maximum possible hit instantly
• Compare melee, ranged, and magic max hits
• Test different gear combinations
• Analyze prayers, potions, and special attacks
• Discover upgrades that increase damage
• Plan bossing, Slayer, PvP, and raid setups
• Find the highest achievable hit before entering combat

Instead of organizing by combat style, organize by player intent. Your goal determines which max hit configuration matters most.

Boss Max Hit Testing

For bossing, knowing your maximum hit helps estimate consistency and DPS. Pair this with accuracy calculations for full combat performance analysis.

Slayer Task Optimization

Slayer Helm (i) adds 15% to both accuracy and damage on task. This single item often outweighs any other equipment upgrade for max hit on Slayer assignments.

PvP KO Potential

In PvP, max hit determines KO potential. Stack Piety + Super Combat + Slayer Helm to find the highest possible hit for special attack KOs.

Raid Damage Planning

Raid bosses have specific defence profiles. Calculate your max hit with different styles to plan optimal gear switches between phases.

Budget Max Hit Builds

Compare budget weapons to expensive ones. The difference between a Dragon Scimitar and Ghrazi Rapier might only be 5-8 max hit — is it worth 90M GP?

Record-Breaking Hit Setups

Dharok's at 1 HP with Piety, Super Combat, and Slayer Helm can achieve 99+ max hits. The calculator models this scaling precisely.

Instead of listing equipment, compare upgrade categories to find the most cost-effective max hit increases.

Weapon Upgrades

Weapons provide the largest strength bonus changes. Upgrading from Abyssal Whip (Str +82) to Ghrazi Rapier (Str +89) adds 2-3 max hit depending on other bonuses.

Strength Bonus Equipment

Bandos Tassets, Primordial Boots, Berserker Ring (i), and Avernic Defender all add strength bonus points that directly increase max hit.

Prayer Boosts

Piety provides +23% to Strength. This is the single largest free damage multiplier available — always activate it for max hit testing.

Potion Effects

Super Combat boosts Strength by +15% +5, adding approximately 18 effective levels. This translates to 5-8 additional max hit depending on equipment.

Special Attack Multipliers

Some special attacks multiply damage: Dragon Claws (4-hit spec), Armadyl Godsword (25% damage increase), Dragon Dagger (double hit). These can dramatically increase effective max hit.

Situational Damage Bonuses

Max hit calculators commonly account for effective strength level, equipment strength bonus, prayers, potions, and conditional bonuses such as Slayer Helmet, Salve, Dragon Hunter equipment, Arclight, and Dharok's.

Effective Strength Level

Your effective strength = (Base Level + Potion Boost) × Prayer Multiplier + Style Bonus + 8. Every point of effective strength adds roughly 0.5–1.0 to max hit.

Equipment Strength Bonus

The total strength bonus from all equipped items. Max Hit formula: floor(0.5 + Effective Str × (Str Bonus + 64) / 640). Higher strength bonus = higher max hit.

Attack Style Bonuses

Aggressive style adds +3 to effective strength. Controlled adds +1. This directly affects max hit calculation.

Prayer Multipliers

Prayers multiply your effective level: Piety = ×1.23, Ultimate Strength = ×1.15, Chivalry = ×1.18. These are multiplicative with other bonuses.

Potion Boosts

Super Strength adds +15%+5 to your Strength level. At 99 Strength, this adds ~18 effective levels — one of the biggest single boosts available.

Equipment Set Effects

Void Knight adds 10% damage. Dharok's scales with missing HP. These are applied after the base max hit calculation as multipliers.

Enemy-Specific Multipliers

Slayer Helm (×1.1667), Salve Amulet (×1.20), Dragon Hunter (×1.20), Arclight (×1.70). Only the highest of Slayer/Salve applies — they don't stack.

General PvM

For everyday combat, your base max hit determines kill speed. Stack Piety and Super Combat as a baseline for all PvM content.

Slayer Monsters

On-task Slayer Helm provides 15% damage bonus. Calculate your max hit with and without it to see how important staying on task is for efficiency.

Dragons

Dragon Hunter Lance/Crossbow adds 20% accuracy and damage against dragons. Stack with Piety for massive max hits at Vorkath, dragons, and Olm.

Demons

Arclight provides 70% accuracy and damage bonus against demons — the largest single-equipment modifier in OSRS. Essential for Cerberus, K'ril, and demon Slayer tasks.

Undead Creatures

Salve Amulet (ei) gives 20% accuracy and damage against undead. Doesn't stack with Slayer Helm — use whichever bonus is higher.

Raid Bosses

Different raid bosses have different weaknesses. Calculate max hit for each style to plan gear switches between phases for optimal team DPS.

Bigger Hits vs Faster Hits

A weapon hitting 50 every 5 ticks deals 3.33 DPS. A weapon hitting 35 every 3 ticks deals 3.89 DPS. The faster weapon wins despite lower max hit.

Why Accuracy Still Matters

Max hit of 60 with 50% accuracy averages 15 damage per hit. Max hit of 45 with 90% accuracy averages 20.25 per hit. Accuracy dramatically affects real damage.

Weapon Speed Trade-Offs

Blowpipe (3-tick) vs Twisted Bow (5-tick): Blowpipe attacks 67% more often. Even with much lower max hit, Blowpipe's speed makes it competitive or superior on low-defence targets.

Burst Damage vs Sustained Damage

In PvP, max hit determines KO potential — you need a single massive hit. In PvM, sustained DPS (considering accuracy and speed) determines kill time.

When Max Hit Should Be Your Priority

A higher max hit does not always produce the highest DPS because attack speed and hit chance also influence total damage over time. Prioritize max hit for PvP, spec weapons, and low-defence targets.

• Stack Multipliers Correctly — Slayer Helm and Salve don't stack. Use the higher one. Dragon Hunter stacks with everything.
• Prioritize Strength Bonuses — Each +4 strength bonus ≈ +1 max hit. Upgrade the slot with the biggest strength gap first.
• Choose the Right Prayer — Piety (+23%) beats Chivalry (+18%). Rigour (+23%) is essential for Ranged builds.
• Match Equipment to Target — Use Dragon Hunter vs dragons, Arclight vs demons, Salve vs undead for massive damage boosts.
• Time Your Special Attacks — AGS spec hits 37.5% harder. DDS hits twice. Stack with max hit boosts for devastating specials.
• Compare Before Purchasing Expensive Gear — Use the calculator to verify actual max hit gain before investing millions.

• Focusing only on visible Strength level — Effective level includes potion, prayer, and style bonuses that dramatically change max hit.
• Ignoring effective level bonuses — A +3 from Aggressive style directly adds ~1 max hit. Small bonuses compound.
• Forgetting potion boosts — Super Combat adds ~18 effective levels at 99 Strength. Never test without potions if you'll use them.
• Using the wrong attack style — Aggressive gives +3 Strength. Accurate gives +3 Attack. Choose based on whether you need max hit or accuracy.
• Missing Slayer or Salve bonuses — 15-20% damage multipliers are the most impactful single-item bonuses in the game.
• Comparing weapons without matching conditions — Always compare with the same prayer, potion, and gear setup for fair results.
• Confusing max hit with overall DPS — Higher max hit doesn't guarantee higher DPS. Attack speed and accuracy matter too.

Dharok's Optimization

Dharok's max hit scales with missing HP: multiplier = 1 + (99 - current HP) × 99 / 10000. At 1 HP, this is a ~97% damage increase. Combined with Piety and Super Combat, max hits can exceed 99.

Slayer Helmet & Black Mask Rules

Slayer Helm provides 15% accuracy and damage on task (16.67% melee). Black Mask gives the same melee bonus but requires imbuing for ranged/magic. Only works against your current Slayer assignment.

Salve Amulet Interactions

Salve Amulet (ei) provides 20% accuracy and damage against undead. Does NOT stack with Slayer Helm — even if fighting undead on a Slayer task. Use whichever bonus is higher.

Dragon Hunter Equipment

Dragon Hunter Lance (+20% acc/dmg vs dragons) and Dragon Hunter Crossbow (+30% acc, +25% dmg vs dragons) are best-in-slot for all draconic targets. Stack with prayers and potions.

Demonbane Weapons

Arclight provides +70% accuracy and damage against demons. This is the highest single-equipment damage modifier in OSRS. Essential for Cerberus, K'ril Tsutsaroth, Skotizo, and Abyssal Sire.

Special Attack Damage Testing

Advanced calculators model conditional effects such as Dharok's missing-HP scaling and monster-specific damage bonuses while preventing incompatible bonus stacking.