CB LVL Calculator (Combat Level)
Determine your precise Old School Runescape (OSRS) combat level based on your character’s stats. This tool is essential for planning account builds, from pures to maxed mains.
The game shows a whole number, but the decimal shows your progress to the next level.
What is a CB LVL Calculator?
A cb lvl calculator (or Combat Level Calculator) is a specialized tool for the MMORPG Old School Runescape (OSRS). It calculates a player’s combat level, a single number that represents their overall power in combat. This level is determined by a specific formula that involves seven different skills: Attack, Strength, Defence, Hitpoints, Ranged, Magic, and Prayer. Players use a cb lvl calculator to plan their character builds, ensuring they can participate in specific activities like Player vs. Player (PvP) brackets, access certain Slayer masters, or optimize their account for a particular playstyle (like a “pure” account with low Defence).
Understanding your combat level is crucial for efficient progression and achieving your account goals. A mistake in training can lead to an unwanted combat level, which might lock you out of your desired content permanently. This is why a precise cb lvl calculator is an indispensable tool for serious players.
The CB LVL Calculator Formula and Explanation
The combat level in OSRS is not a simple sum of your skills. It’s calculated using a two-part formula that considers a base defensive value and the highest of your three offensive styles (Melee, Ranged, or Magic).
The formula is as follows:
Combat Level = Base Level + Highest Offensive Modifier
Where:
Base Level = 0.25 * (Defence Level + Hitpoints Level + floor(Prayer Level / 2))Melee Modifier = 0.325 * (Attack Level + Strength Level)Ranged Modifier = 0.325 * floor(Ranged Level * 1.5)Magic Modifier = 0.325 * floor(Magic Level * 1.5)
The game always rounds the final combat level down to the nearest whole number (an operation known as “flooring”). Our calculator shows the decimal to let you know how close you are to leveling up.
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Attack | Affects melee accuracy. Required to wield stronger weapons. | Level | 1-99 |
| Strength | Affects maximum melee damage. | Level | 1-99 |
| Defence | Reduces the chance of being hit by an opponent. Required for armor. | Level | 1-99 |
| Hitpoints | Determines your character’s total health. | Level | 1-99 (starts at 10) |
| Ranged | Affects ranged accuracy and damage. | Level | 1-99 |
| Magic | Affects magic accuracy and damage. | Level | 1-99 |
| Prayer | Allows the use of temporary combat-boosting prayers. | Level | 1-99 |
Practical Examples
Example 1: A “1 Defence Pure” Build
Pures are accounts that intentionally keep one or more skills low to maintain a low combat level for PvP advantages. A classic example is a 1 Defence pure focused on melee.
- Inputs: Attack: 60, Strength: 80, Defence: 1, Hitpoints: 75, Ranged: 1, Magic: 1, Prayer: 13
- Calculation:
- Base Level = 0.25 * (1 + 75 + floor(13 / 2)) = 0.25 * (76 + 6) = 20.5
- Melee Modifier = 0.325 * (60 + 80) = 0.325 * 140 = 45.5
- Ranged Modifier = 0.325 * floor(1 * 1.5) = 0.325 * 1 = 0.325
- Magic Modifier = 0.325 * floor(1 * 1.5) = 0.325 * 1 = 0.325
- Result: Combat Level = 20.5 + 45.5 = 66.0. The player’s combat level would be 66.
Example 2: A Balanced “Main” Account
A main account trains all skills without restriction. Let’s see the combat level for a mid-game player.
- Inputs: Attack: 70, Strength: 75, Defence: 70, Hitpoints: 78, Ranged: 80, Magic: 70, Prayer: 70
- Calculation:
- Base Level = 0.25 * (70 + 78 + floor(70 / 2)) = 0.25 * (148 + 35) = 45.75
- Melee Modifier = 0.325 * (70 + 75) = 0.325 * 145 = 47.125
- Ranged Modifier = 0.325 * floor(80 * 1.5) = 0.325 * 120 = 39.0
- Magic Modifier = 0.325 * floor(70 * 1.5) = 0.325 * 105 = 34.125
- Result: Combat Level = 45.75 + 47.125 (the highest modifier) = 92.875. The player’s combat level would be 92. For more information on leveling, see this combat training guide.
How to Use This CB LVL Calculator
Using our cb lvl calculator is straightforward and provides instant results for your theorycrafting needs.
- Enter Your Skill Levels: Input your current or desired levels for the seven combat skills (Attack, Strength, Defence, Hitpoints, Ranged, Magic, Prayer) into their respective fields. The calculator is pre-filled with base stats, which you can adjust.
- View Real-Time Results: As you type, the “Your Combat Level” display updates automatically. You don’t need to press a calculate button.
- Analyze the Details: Below the main result, you can see the intermediate values: your Base Level and the calculated modifiers for Melee, Ranged, and Magic. This helps you understand which combat style is currently determining your level. A slayer task list can help you find monsters to train on.
- Visualize the Data: The bar chart provides a quick visual comparison of your three combat style modifiers, making it easy to see which one is dominant.
- Reset or Copy: Use the “Reset” button to return all stats to their default values. Use “Copy Results” to save a text summary of your stats and combat level to your clipboard.
Key Factors That Affect Your Combat Level
Several factors influence your combat level, and understanding them is key to using a cb lvl calculator effectively.
- Core Defensive Skills: Defence and Hitpoints are always part of your Base Level. Every level gained in these skills will increase your combat level, regardless of your primary attack style.
- Prayer’s Unique Contribution: Prayer has a lesser but still significant impact. You only gain a “full” prayer level’s worth of combat XP for every two Prayer levels you gain, due to the
floor(Prayer / 2)part of the formula. - Paired Melee Skills: Attack and Strength are combined for the Melee modifier. This means that to be melee-based, the sum of these two skills must be significantly higher than your Ranged or Magic levels. Check out our melee gear calculator for more.
- Solo Ranged/Magic Skills: Ranged and Magic levels are calculated independently. Their formula (multiplying by 1.5) makes them more “efficient” than melee for gaining combat levels if trained alone.
- The Dominant Style: Only the highest of the three offensive modifiers (Melee, Ranged, or Magic) is added to your Base Level. This is the cornerstone of all account build planning. You can have high levels in one style while keeping others low without them affecting your combat level, as long as they don’t overtake the dominant style. You might want to use a gear setup planner to optimize.
- Non-Combat Skills: Skills like Mining, Fishing, or Agility have zero impact on your combat level. This is a common point of confusion for new players.
Frequently Asked Questions (FAQ)
1. What is the maximum combat level in OSRS?
The maximum combat level is 126. This is achieved with 99 Attack, 99 Strength, 99 Defence, 99 Hitpoints, 99 Ranged, 99 Magic, and 99 Prayer.
2. Why does the cb lvl calculator show a decimal?
The game’s internal calculation results in a decimal value. The game interface then floors this number (rounds down) to display a whole number. We show the decimal to provide more detail, letting you see exactly how close you are to gaining your next combat level.
3. How do I get the lowest combat level for a high damage output?
This is the principle behind “pure” accounts. Typically, you would maximize your primary damage skills (e.g., Strength) while keeping your non-dominant skills and, most importantly, your Defence level as low as possible (often at level 1). A damage per second calculator can help with this.
4. Does questing affect my combat level?
Only if the quest provides experience rewards in one of the seven combat skills. For example, completing the “Waterfall Quest” gives a large amount of Attack and Strength XP, which can significantly raise your combat level early on.
5. Is this calculator for RuneScape 3 (RS3) or Old School RuneScape (OSRS)?
This calculator uses the formula specifically for Old School RuneScape (OSRS). RS3 uses a completely different combat system and formula.
6. Why does Prayer only count for half?
This is a balancing decision made by the game developers. It makes Prayer a less punishing skill to level in terms of combat level gain, allowing players to access higher-level prayers without drastically increasing their combat level compared to leveling Defence or Hitpoints.
7. Can I lower my combat level?
No. Once you gain experience in a skill, it cannot be removed. Therefore, you can never lower a skill level or your resulting combat level. This is why careful planning with a cb lvl calculator is so important.
8. Which combat style should I focus on?
It depends on your goals. Melee is very common for its high damage output with Strength. Ranged and Magic offer versatility and the ability to attack from a distance. Many players eventually train all three styles on a main account.