What is the OSRS Hit Chance Calculator?

Trying to figure out your chances of hitting a boss or another player in Old School RuneScape? The OSRS Hit Chance Calculator is a simple, effective tool designed specifically for players who want to understand the mechanics behind their combat effectiveness. Whether you’re a PvM enthusiast, a dedicated PvP fighter, or just a new player trying to understand the game, this calculator takes the guesswork out of combat.

It’s a straightforward way to answer common questions like:

• “What is my hit chance against Zulrah?”
• “How much does my prayer bonus affect my accuracy?”
• “What’s the difference in accuracy between a Dragon Scimitar and an Abyssal Whip?”

Our calculator helps you determine the probability of a successful hit by comparing your max attack roll against your opponent’s max defence roll. This is crucial for optimizing your gear, potions, and prayers for different combat scenarios.

How to Calculate Your Hit Chance in OSRS

Calculating your hit chance manually can be complex, involving a number of specific variables. Our OSRS Hit Chance Calculator simplifies this process dramatically. You only need two key pieces of information:

1. Your Max Attack Roll: This value represents your highest possible attack roll in a given combat style (Melee, Ranged, or Magic). It’s a combination of your attack level, equipment bonuses, and prayer boosts.
2. Your Opponent’s Max Defence Roll: This is the highest possible defence roll your opponent can achieve, which is a combination of their defence level, equipment, and any defensive prayers.

Once you have these two numbers, you simply input them into the calculator.

What gear gives the highest DPS in OSRS

Understanding the OSRS Combat Formula

The hit chance calculation is based on a foundational OSRS combat mechanic. The game compares your attack roll with your opponent’s defence roll to determine if your attack lands.

Here’s the basic breakdown of the logic the calculator uses:

By using our calculator, you don’t need to worry about memorizing these formulas. The tool does all the work for you, providing an instant, accurate percentage. This empowers you to make smarter decisions about your gear, from picking the right weapon for a specific boss to knowing when to switch prayers.