Welcome to the ultimate **OSRS Dry Calculator** for Activity Profit! This tool helps you forecast the financial outcome of any repeatable Old School RuneScape activity, such as bossing, skilling, or running Raids, by accounting for variable and fixed costs. Simply leave one field blank, and the calculator will solve for it.
OSRS Dry Run Profit Calculator
Calculation Result:
OSRS Dry Run Profit Formula
The calculation is based on the fundamental financial equation for profitability, adapted for Old School RuneScape activities:
$$P = Q \times (R – V) – F$$
Formula Source: OSRS Wiki Money Making Guide, Investopedia Profit Definition
Variables Explained
Understanding the components is crucial for accurate forecasting:
- Number of Runs (Q): The quantity of times you complete the activity (e.g., number of boss kills, hours spent skilling).
- Avg. Revenue per Run (R): The average GP value of drops or item outputs (not including consumables) earned per run.
- Avg. Variable Cost per Run (V): The recurring cost of supplies like runes, potions, food, and instance fees required for *each* run.
- Fixed Cost (F): A one-time, non-recurring cost that doesn’t change regardless of how many runs you do (e.g., initial equipment purchase, one-time unlock cost).
- Target Total Profit (P): The overall financial gain (or loss) after accounting for all costs over the total number of runs (Q).
Related OSRS Financial Calculators
Explore other related tools to optimize your OSRS wealth accumulation:
- OSRS GE Tax Calculator
- OSRS XP/Hour Cost-Benefit Analyzer
- OSRS Buy Limit Profit Predictor
- OSRS Slayer Profit Estimator
What is Dry Run Profit Forecasting?
In OSRS, a “dry” streak refers to going a significant number of kills or attempts without receiving a rare, valuable item drop. The OSRS Dry Run Profit Calculator shifts the focus from luck to **expected value**. It calculates the total profit (or loss) based on the **average** expected drop rate and the associated costs, helping players determine if an activity is sustainable and profitable over the long term, regardless of short-term luck.
This type of forecasting is critical for long-term goal setting. It helps separate the high-variance drops (like a rare pet or unique drop) from the constant inflow/outflow of resources. If your expected profit per run is negative, you are essentially losing money, and this calculation provides the factual foundation to pivot to more rewarding activities.
How to Calculate OSRS Dry Run Profit (Example)
- Determine Costs and Runs: Set your target runs (Q = 500 Vorkath kills). Determine your avg. revenue per kill (R = 250,000 GP) and avg. variable cost per kill (V = 60,000 GP). Assume a one-time Fixed Cost (F = 1,000,000 GP) for the Vorkath Head unlock.
- Calculate Profit per Run: Subtract the variable cost from the revenue: $R – V = 250,000 – 60,000 = 190,000$ GP profit per run.
- Calculate Total Variable Profit: Multiply the runs by the profit per run: $500 \times 190,000 = 95,000,000$ GP.
- Apply Fixed Cost: Subtract the fixed cost from the total variable profit: $95,000,000 – 1,000,000 = 94,000,000$ GP.
- Final Result: Your forecasted Total Profit (P) after 500 dry runs is 94,000,000 GP.
Frequently Asked Questions (FAQ)
Is the calculator accurate for rare drops?
Yes and no. The calculator is based on the *average* value of drops. It’s accurate for long-term expected value, but your actual profit might vary wildly in the short term due to the high variance of rare drops. This tool models the “dry” expected scenario.
What if I leave all fields blank?
The system requires at least three numerical inputs to successfully perform a calculation or solve for a missing variable. If all fields are blank or non-numerical, it will return an error message prompting you to enter data.
Can I use this for non-combat activities?
Absolutely. For skilling, Q can be the number of items created, R the GE price of the item, V the cost of raw materials, and F the cost of the starting gear or required quest completion.
Why is the Fixed Cost (F) important?
The Fixed Cost (F) represents the initial investment. Including it ensures you calculate the true “payback period” needed to recoup that initial cost, giving a complete picture of profitability from a pure investment perspective.