Glossary

Essential gaming terms and definitions for profit calculations

Drop Rate
The probability of receiving a specific item from a particular activity, usually expressed as a fraction (e.g., 1/128) or percentage.
OSRSWoW

Detailed Explanation

Drop rates determine how likely you are to receive rare items. They are typically determined through official game data or extensive community testing. Understanding drop rates is crucial for calculating expected profits and planning efficient farming routes.

Examples

  • Abyssal Whip from Abyssal Demons: 1/512 (0.195%)
  • Barrows items: 1/17.42 per brother (5.74%)

Related Terms

Expected Value (EV)
The average value you can expect to receive per run, calculated by multiplying each possible reward by its drop rate and current market price.
OSRSWoW

Detailed Explanation

Expected Value is a statistical concept that helps you understand the long-term average profit of an activity. It accounts for both common and rare drops, weighted by their probability. EV is essential for comparing different money-making methods.

Examples

  • If a boss drops 100k 90% of the time and 1M 10% of the time: EV = (100k × 0.9) + (1M × 0.1) = 190k
  • Barrows EV includes all possible item drops weighted by their probabilities

Related Terms

Gold Per Hour (GPH)
Your potential earnings per hour, calculated by dividing your expected value by the time it takes to complete one run.
OSRSWoW

Detailed Explanation

GPH is the ultimate metric for comparing money-making methods. It factors in both the profitability (EV) and efficiency (time per run) of an activity. Higher GPH methods are generally more desirable for players focused on maximizing profits.

Examples

  • If Barrows EV is 150k and takes 4 minutes per run: GPH = (150k ÷ 4) × 60 = 2.25M/hour
  • Comparing different bosses by GPH helps identify the most profitable activities

Ready to Calculate?

Use our calculators to apply these concepts and optimize your gaming profits.