Combat level
From the RuneScape Wiki, the wiki for all things RuneScape
A player's, monster's, or non-player character's combat level indicates the difficulty in defeating him, her, or it in combat. All new players start out at combat level 3, and the maximum level for RuneScape 2 is level 138 (126 on the free version), while in RuneScape Classic, it is level 123.
Combat level is calculated by taking into account the following skills:
Levels that are lower than the player display shades of green, levels that are slightly lower than one's display yellow-ish green, levels that are equal to one's are displayed as yellow and levels that are higher than yours display shades of orange to red.
[edit] Effects of combat level
Normally, aggressive non-player characters stop attacking when the player's combat level is higher than double their combat level. There are exceptions, however - for example, any monsters in the wilderness that are normally aggressive will be aggressive to players no matter what their combat level is.
Monsters with a higher combat level than a player cannot be attacked by using a left mouse click. Instead, players need to right click and select the attack monster option. So, to be able to attack a Blue Dragon with combat level 111 with a simple left click, a player needs a combat level of at least 111.
Combat level is the only in-game visible parameter that players have to evaluate another player. High combat levels do not always accurately describe a player's capabilities in other skills. There are players with maximum combat that have very low levels in other skills and there are pure skillers with no combat levels and very high non-combat skills. Yet, there is a reasonable chance that a high combat level also implies a decent skill level and a reasonable knowledge of the game.
A more complicated assessment is in the trustworthiness of a player in trades. Some players place higher trust in higher combat level players, as they have more to lose when they get banned after being reported for illegal trading practices.
[edit] Wiki combat calculator
The Combat template contains a combat formula. A player's beginning combat stats are displayed as an example. If you want to experiment you can edit this section and use the Show preview button to find out your combat level.
After reloading, please use the Back button of the web browser or click on the "Article" tab at the top to leave the web page unchanged. Do NOT save any changes.
| Combat level | |||
|---|---|---|---|
| 1 | 
| 10 |
| 1 | 
| 1 |
| 1 | 3.4 | 3 |
| 1 | ||
| 1 | 3.07 | 3 |
| 1 | 3.07 | 3 |
The combat level is given for each of the three combat types, found in the table that is the right most column. See the left columns for the levels entered.
