Combat Calculator OSRS

Calculate your exact combat level using the official OSRS combat formula. Enter your Attack, Strength, Defence, Hitpoints, Prayer, Ranged, and Magic levels to instantly see your combat level, dominant combat style, wilderness attack range, and the fastest path to your next combat level. or head back to the main construction calculator OSRS for a full 1-99 breakdown.

Whether you're building a 1 Defence pure, planning a PvP bracket, or maximizing your PvM combat level, this calculator uses the same formula Jagex applies in-game. PvM players, PKers, pure builds, Ironmen, and main accounts all benefit from understanding exactly how their stats translate into combat level.

The Combat Calculator OSRS is a free tool that uses the official OSRS combat formula to determine your exact combat level from your seven combat-related skills. Your combat level is a single number between 3 and 126 that represents your overall combat strength and determines which players can attack you in PvP zones.

Understanding your combat level matters because it directly affects your gameplay. In the Wilderness, your combat level determines the range of players who can attack you. For PvM, certain bosses and activities recommend minimum combat levels. For account builds — especially pures, zerkers, and med-levels — knowing exactly which skills increase your combat level is essential.

The combat formula considers only one offensive style (melee, ranged, or magic) — whichever gives the highest value. This means training only one offensive style keeps your combat level lower while maximizing your offensive power.

Who Should Use This Calculator

PvM players use it to track their combat progression toward boss requirements. PKers and pure builds rely on it to plan stat distributions that maximize damage while minimizing combat level. Ironmen need it for efficient progression planning. Main accounts use it to understand how each level-up affects their overall combat.

Current Inputs

The combat calculator requires seven inputs: Attack, Strength, Defence, Hitpoints, Prayer, Ranged, and Magic. Each skill contributes differently to the combat formula.

Calculation Process

First, the base combat score is computed from Defence, Hitpoints, and Prayer. Then the three offensive scores (melee, ranged, magic) are calculated separately. The highest offensive score is combined with the base score to produce the final combat level.

Base Combat Formula

Base = 0.25 × (Defence + Hitpoints + ⌊Prayer ÷ 2⌋). This value is always included regardless of your offensive style.

Melee Formula

Melee = 0.325 × (Attack + Strength). Both Attack and Strength contribute equally to the melee offensive score.

Ranged Formula

Ranged = 0.325 × ⌊Ranged × 1.5⌋. The 1.5× multiplier means Ranged has higher impact per level than Attack or Strength individually.

Magic Formula

Magic = 0.325 × ⌊Magic × 1.5⌋. Like Ranged, Magic receives a 1.5× multiplier in the combat formula.

Final Combat Formula

Combat Level = Base + Max(Melee, Ranged, Magic). Only the highest offensive style counts — the other two are ignored entirely.

Attack

Attack improves melee accuracy and is required for weapon upgrades. Each Attack level adds 0.325 to your melee score, which only matters if melee is your highest offensive style.

Strength

Strength increases your maximum melee hit. Like Attack, it adds 0.325 per level to the melee score.

Defence

Defence always contributes to your combat level through the base combat formula. Each level adds 0.25 to your base score.

Prayer

Prayer contributes at half value (floored). Every 2 Prayer levels adds 0.25 to your base combat score. Odd levels have no effect.

Hitpoints

Hitpoints always counts toward base combat. Since Hitpoints levels naturally through combat training, it consistently raises combat level.

Ranged

Ranged has a 1.5× multiplier, making it the highest individual skill impact. Each Ranged level adds 0.4875 to the ranged offensive score.

Magic

Magic also receives the 1.5× multiplier, giving it the same per-level impact as Ranged (0.4875 per level).

In the Wilderness, you can be attacked by players within a range determined by your combat level and the Wilderness level (depth). The formula is: Attackable Range = Your Combat Level ± Wilderness Level.

At Wilderness level 1, a combat 80 player can be attacked by players from combat 79 to 81. At Wilderness level 20, that same player faces anyone from combat 60 to 100. Deep Wilderness expands PvP brackets dramatically.

1 Defence Pure

Pures keep Defence at 1 to maintain the lowest possible combat level while maximizing offensive stats. They dominate low-level PvP brackets.

Obsidian Pure

An Obsidian Pure wears full Obsidian armour without any Defence requirement and relies on the Berserker Necklace for damage.

Zerker

Zerkers train Defence to 45 for Berserker Helm and complete Recipe for Disaster for Barrows Gloves. Combat level typically sits around 78–100.

Void Pure

Void Pures use Void Knight equipment with 42 Defence and 44 Prayer, offering strong accuracy bonuses at a moderate combat level.

Med Level

Med-levels train all combat stats to 70–80, offering versatility in both PvP and PvM while staying under combat 115.

Main Account

Main accounts aim for 99 in all combat stats, reaching combat level 126 — the maximum possible.

• Balance Attack and Strength — They contribute equally to the melee score, so training them evenly maximizes combat efficiency.
• Don't neglect Defence — Defence always adds to base combat and unlocks better armour.
• Train Prayer wisely — Only even Prayer levels affect combat, so stop at 44 or 52 for pures.
• Raise HP naturally — Hitpoints levels through all combat training, so it rises on its own.
• Understand combat style breakpoints — Know when Ranged or Magic overtakes melee as your dominant style.
• Plan builds before leveling — Accidental level-ups can permanently change your combat bracket.

The Combat Calculator determines your combat level from skill stats, while a DPS Calculator estimates how much damage you deal per second using specific gear setups. Use the Combat Calculator for account planning and PvP brackets; use a DPS Calculator for boss kill optimization and gear comparisons.

A Max Hit Calculator tells you the highest damage you can deal in a single hit based on your Strength level, equipment bonuses, prayers, and potions. The Combat Calculator only uses your raw stats to determine your combat level. They serve completely different purposes — one plans your account build, the other optimizes your damage output.

The Combat Calculator tells you what your combat level is and which style dominates. A Combat Training Calculator helps you plan how to reach a specific combat level by estimating XP needed, comparing training methods, and tracking time. Use the Combat Calculator to understand your current state and next targets; use a training calculator to plan the route there.

• Forgetting Prayer — Prayer contributes to base combat even at half value.
• Wrong HP level — Always enter your actual Hitpoints, not assume 10.
• Misunderstanding Range multiplier — Ranged has a 1.5× factor, so it weighs more per level than Attack or Strength alone.
• Ignoring Magic contribution — Magic also has the 1.5× multiplier and can become your dominant style.
• Expecting all offensive styles to stack — Only the highest offensive score counts. Training all three doesn't add 3× combat.