OSRS Blast Furnace Calculator
Optimize your Old School RuneScape smithing for maximum profit and XP.
Calculate Your Blast Furnace Profit & XP
Select the type of ore you plan to smelt.
Your current Smithing level (affects XP rates).
A Coal Bag allows you to carry more coal, increasing efficiency.
Ice Gloves are essential for handling hot bars without taking damage or needing a bucket of water.
Goldsmith Gauntlets significantly boost XP when smelting gold ore.
How frequently you use stamina potions to maintain run energy.
Current Grand Exchange price of one unit of your chosen ore.
Current Grand Exchange price of one unit of coal.
Current Grand Exchange price of one finished bar.
Current Grand Exchange price of one finished gold bar (only relevant if selling gold bars).
Current Grand Exchange price of a 4-dose stamina potion.
The duration in hours for which you want to calculate total profit and XP.
Estimated Total Profit
Total Experience Gained
Estimated Bars Smelted Per Hour
Profit Per Bar
How the OSRS Blast Furnace Calculator Works:
This calculator estimates your potential profit and XP by considering your chosen ore, current market prices, and efficiency factors like the Coal Bag, Ice Gloves, Goldsmith Gauntlets, and Stamina Potion usage. It calculates the cost of materials, subtracts it from the bar’s selling price to find profit per bar, and then extrapolates total profit and XP over your specified time based on estimated bars per hour.
OSRS Blast Furnace Ore Details
This table provides base information for various ores smelted at the Blast Furnace, including the coal required per bar and base experience gained. Note that Goldsmith Gauntlets significantly boost Gold Bar XP.
| Ore Type | Ores per Bar | Coal per Bar | Base XP per Bar | Gauntlet XP (Gold) |
|---|---|---|---|---|
| Bronze | 1 Tin, 1 Copper | 0 | 6.2 | N/A |
| Iron | 1 Iron | 0 | 12.5 | N/A |
| Steel | 1 Iron | 2 Coal | 17.5 | N/A |
| Silver | 1 Silver | 0 | 13.5 | N/A |
| Gold | 1 Gold | 0 | 22.5 | 56.2 |
| Mithril | 1 Mithril | 4 Coal | 30 | N/A |
| Adamantite | 1 Adamantite | 6 Coal | 37.5 | N/A |
| Runite | 1 Runite | 8 Coal | 50 | N/A |
Comparison of Profit per Hour and XP per Hour for Current Setup
A) What is the OSRS Blast Furnace Calculator?
The OSRS Blast Furnace Calculator is an essential tool for Old School RuneScape players looking to optimize their Smithing training and money-making strategies. It helps you determine the most profitable and/or experience-efficient way to use the Blast Furnace by taking into account various factors such as ore prices, bar prices, coal costs, and your specific equipment setup.
The Blast Furnace is a unique Smithing training method located in Keldagrim, requiring a minimum of 60 Smithing to use efficiently (or 30 Smithing with a dwarf managing the furnace for a fee). Unlike regular furnaces, it only requires half the coal for most bars and processes ores much faster, making it a popular choice for both high-level XP and significant profit.
Who Should Use the OSRS Blast Furnace Calculator?
- Smithing Trainers: Players aiming for high Smithing levels can use the OSRS Blast Furnace Calculator to find the most XP-efficient ores, especially gold bars with Goldsmith Gauntlets.
- Money Makers: Those looking to earn significant GP can identify which bars offer the best profit margins based on current Grand Exchange prices.
- Efficiency Scapers: Players who want to maximize both XP and GP per hour by fine-tuning their setup and ore choices.
- New Blast Furnace Users: To understand the costs and benefits before investing time and resources into the method.
Common Misconceptions about the Blast Furnace
- “It’s always profitable”: While often profitable, market fluctuations can make some bars unprofitable. Always check prices with an OSRS Blast Furnace Calculator.
- “It’s only for high levels”: While 60 Smithing is ideal for free use, players with 30 Smithing can pay a dwarf to operate it, making it accessible earlier.
- “You don’t need Ice Gloves”: Ice Gloves are crucial. Without them, you’ll take damage or need a bucket of water, severely reducing efficiency.
- “Coal Bag isn’t necessary”: For coal-intensive ores like Adamantite or Runite, a Coal Bag dramatically reduces banking time and increases bars per hour.
B) OSRS Blast Furnace Calculator Formula and Mathematical Explanation
The calculations performed by this OSRS Blast Furnace Calculator are based on a series of steps to determine the net profit and experience gained per bar and per hour. Understanding these formulas helps you make informed decisions.
Step-by-Step Derivation:
- Determine Ore Requirements: Each bar type requires a specific number of ores and coal. For example, a Steel bar needs 1 Iron ore and 2 Coal. Gold bars need 1 Gold ore and 0 Coal.
- Calculate XP per Bar: This is a fixed value for each bar type, with a special bonus for Gold bars when Goldsmith Gauntlets are worn (2.5x base XP).
- Estimate Bars per Hour: This is a crucial efficiency metric. It’s influenced by your stamina usage, whether you have a Coal Bag, and the ore type (coal-intensive ores are slightly slower). Our calculator uses estimated rates based on common player efficiency.
- Calculate Cost per Bar:
Material Cost = (Ore Price * Ores per Bar) + (Coal Price * Coal per Bar)Stamina Cost per Bar = (Stamina Potion Price / Doses per Potion / Potion Duration in Minutes * Minutes per Hour) / Bars per Hour(adjusted for stamina usage level)Total Cost per Bar = Material Cost + Stamina Cost per Bar
- Calculate Profit per Bar:
Profit per Bar = Bar Price - Total Cost per Bar
- Calculate Total Profit and XP:
Total Profit = Profit per Bar * Bars per Hour * Time (Hours)Total XP = XP per Bar * Bars per Hour * Time (Hours)
Variables Table:
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
Ore Type |
The specific metal ore being smelted (e.g., Gold, Adamantite). | N/A | Bronze to Runite |
Smithing Level |
Your character’s Smithing skill level. | Level | 1-99 |
Has Coal Bag |
Boolean (Yes/No) indicating if you own and use a Coal Bag. | N/A | True/False |
Has Ice Gloves |
Boolean (Yes/No) indicating if you own and use Ice Gloves. | N/A | True/False |
Has Goldsmith Gauntlets |
Boolean (Yes/No) indicating if you own and use Goldsmith Gauntlets. | N/A | True/False |
Stamina Usage |
How consistently stamina potions are used. | N/A | Constant, Occasional, None |
Ore Price |
The current Grand Exchange price of one unit of the chosen ore. | GP | 50 – 15,000 |
Coal Price |
The current Grand Exchange price of one unit of coal. | GP | 100 – 250 |
Bar Price |
The current Grand Exchange price of one finished bar. | GP | 100 – 20,000 |
Gold Bar Price |
The current Grand Exchange price of one finished gold bar (if selling gold bars). | GP | 200 – 400 |
Stamina Potion Price |
The current Grand Exchange price of a 4-dose stamina potion. | GP | 8,000 – 15,000 |
Time to Calculate |
The total duration in hours for the calculation. | Hours | 0.1 – 24 |
C) Practical Examples (Real-World Use Cases)
Let’s look at a couple of scenarios using the OSRS Blast Furnace Calculator to illustrate its utility.
Example 1: Maximizing XP with Gold Bars
A player wants to reach 99 Smithing as fast as possible and decides to smelt Gold bars with Goldsmith Gauntlets.
- Inputs:
- Ore Type: Gold Ore
- Smithing Level: 70
- Has Coal Bag: Yes (not strictly needed for gold, but good to have)
- Has Ice Gloves: Yes
- Has Goldsmith Gauntlets: Yes
- Stamina Usage: Constant
- Ore Price (Gold Ore): 250 GP
- Coal Price: 150 GP (irrelevant for gold)
- Bar Price (Gold Bar): 300 GP
- Stamina Potion Price: 10,000 GP
- Time to Calculate: 3 hours
- Outputs (Approximate):
- Total Profit: -1,500,000 GP (Gold bars are usually an XP loss)
- Total XP: 540,000 XP
- Bars per Hour: 3,200
- Profit Per Bar: -150 GP
Interpretation: This player will gain a massive amount of XP (180k XP/hr) but will incur a significant loss of 1.5 million GP over 3 hours. This is a common trade-off for fast Smithing XP at the Blast Furnace.
Example 2: Profitable Adamantite Bars
Another player wants to make money while training Smithing, focusing on Adamantite bars.
- Inputs:
- Ore Type: Adamantite Ore
- Smithing Level: 80
- Has Coal Bag: Yes
- Has Ice Gloves: Yes
- Has Goldsmith Gauntlets: No
- Stamina Usage: Constant
- Ore Price (Adamantite Ore): 1,500 GP
- Coal Price: 150 GP
- Bar Price (Adamantite Bar): 3,000 GP
- Stamina Potion Price: 10,000 GP
- Time to Calculate: 2 hours
- Outputs (Approximate):
- Total Profit: 1,000,000 GP
- Total XP: 180,000 XP
- Bars per Hour: 2,800
- Profit Per Bar: 180 GP
Interpretation: This player can expect a good balance of profit and XP. Over 2 hours, they would earn 1 million GP and gain 180,000 Smithing XP, making it a viable method for both goals. The OSRS Blast Furnace Calculator helps confirm this profitability.
D) How to Use This OSRS Blast Furnace Calculator
Using the OSRS Blast Furnace Calculator is straightforward. Follow these steps to get accurate results for your Old School RuneScape Smithing endeavors:
- Select Ore Type: Choose the type of ore you intend to smelt from the dropdown menu. This will automatically adjust base XP and coal requirements.
- Enter Smithing Level: Input your current Smithing level. While it doesn’t directly affect bar creation at BF, it’s good for context.
- Check Equipment: Tick the checkboxes if you possess and plan to use a Coal Bag, Ice Gloves, and Goldsmith Gauntlets. These significantly impact efficiency and XP (especially Goldsmith Gauntlets for gold).
- Choose Stamina Usage: Select how consistently you’ll use stamina potions. “Constant” assumes maximum run energy, leading to higher bars per hour.
- Input Current Prices: This is critical. Enter the current Grand Exchange prices for your chosen Ore, Coal, the resulting Bar, and Stamina Potions. Accurate prices ensure accurate profit calculations.
- Set Time to Calculate: Specify how many hours you want to calculate the total profit and XP for.
- Click “Calculate”: The results will instantly update, showing your estimated total profit, total XP, bars per hour, and profit per bar.
- Use “Reset” for Defaults: If you want to start over, click the “Reset” button to restore all inputs to their default values.
- “Copy Results”: Click this button to quickly copy the main results and key assumptions to your clipboard for sharing or record-keeping.
How to Read Results:
- Estimated Total Profit: The primary result, showing your net gain or loss in GP over the specified time. A positive number means profit, a negative means loss.
- Total Experience Gained: The total Smithing XP you’ll earn over the specified time.
- Estimated Bars Smelted Per Hour: Your efficiency metric, indicating how many bars you can produce in an hour.
- Profit Per Bar: The net GP gained or lost for each individual bar smelted.
Decision-Making Guidance:
Use the OSRS Blast Furnace Calculator to compare different ore types. If you’re prioritizing XP, look for high XP/hour, even if it means a loss. If you’re prioritizing profit, focus on ores with high profit/bar. Adjusting prices and equipment can reveal optimal strategies.
E) Key Factors That Affect OSRS Blast Furnace Calculator Results
Several variables can significantly influence the profit and XP rates you achieve at the Blast Furnace. Understanding these factors is crucial for maximizing your efficiency and earnings.
- Ore and Bar Prices: This is arguably the most impactful factor. Grand Exchange prices for ores, coal, and finished bars fluctuate constantly. A small change in any of these can turn a profitable method into a loss, or vice-versa. Always check current prices using the OSRS Blast Furnace Calculator.
- Coal Bag Ownership: For ores that require coal (Steel, Mithril, Adamantite, Runite), a Coal Bag (obtained from Motherlode Mine) is almost mandatory. It allows you to carry 27 pieces of coal, effectively doubling your coal capacity per inventory and drastically reducing banking time, thus increasing bars per hour.
- Ice Gloves: These gloves (obtained from the quest “Desert Treasure”) allow you to handle hot bars without taking damage or needing to use a bucket of water. Without them, your efficiency will plummet due to constant trips to the water source or health regeneration.
- Goldsmith Gauntlets: Obtained from the “Family Gauntlets” quest, these gauntlets provide 2.5x the base Smithing XP when smelting gold ore. This makes gold bars the fastest Smithing XP method in the game, albeit often at a significant financial loss.
- Stamina Potion Usage: Maintaining full run energy is vital for high bars per hour. Constant stamina potion usage ensures you’re always running between the bank and the furnace, minimizing downtime. Without stamina, your rates will drop significantly.
- Player Efficiency (APM/Tick Manipulation): While the calculator uses average efficient rates, a player’s actual “Actions Per Minute” (APM) and ability to perform tick-perfect movements can slightly increase or decrease their actual bars per hour. This is a human factor not directly calculable but assumed in the “Constant Stamina” rates.
- Smithing Level: While not directly affecting the speed of smelting at the Blast Furnace, a higher Smithing level unlocks more types of bars to smelt. For example, Adamantite bars require 70 Smithing, and Runite bars require 85 Smithing.
F) Frequently Asked Questions (FAQ) about the OSRS Blast Furnace Calculator
Q: Is the Blast Furnace always profitable?
A: No. While often a good money-maker, market prices for ores, coal, and bars fluctuate. Always use an OSRS Blast Furnace Calculator with current Grand Exchange prices to verify profitability before you start.
Q: What are the minimum requirements to use the Blast Furnace?
A: You need 30 Smithing to use the Blast Furnace by paying a dwarf 2,500 GP every 10 minutes. At 60 Smithing, you can use it for free. Ice Gloves are highly recommended, and a Coal Bag is essential for coal-intensive ores.
Q: Why are Gold bars so popular for XP, even if they lose money?
A: With Goldsmith Gauntlets, Gold bars offer the highest Smithing XP rates in the game, often exceeding 300,000 XP per hour. Players prioritize this speed for reaching 99 Smithing quickly, accepting the financial loss.
Q: How accurate are the “Bars per Hour” estimates in the OSRS Blast Furnace Calculator?
A: The estimates are based on efficient player rates, assuming constant stamina and optimal banking. Your actual rates may vary slightly depending on your personal efficiency, ping, and attention. They serve as a good benchmark.
Q: Do I need a specific quest for the Blast Furnace?
A: No specific quest is required to access the Blast Furnace itself. However, “The Giant Dwarf” quest is recommended as it provides access to Keldagrim. “Family Gauntlets” is needed for Goldsmith Gauntlets, and “Desert Treasure” for Ice Gloves.
Q: Can I use the Blast Furnace without Ice Gloves?
A: You can, but it’s highly inefficient. Without Ice Gloves, you’ll take damage from hot bars or need to constantly use a bucket of water, significantly slowing down your rates and potentially costing more in supplies or health regeneration.
Q: What’s the best ore for profit at the Blast Furnace?
A: This changes frequently with market prices. Generally, Mithril, Adamantite, and Runite bars can be very profitable. Use the OSRS Blast Furnace Calculator daily to check which ore is currently yielding the highest profit per bar.
Q: Why is my calculated profit negative?
A: A negative profit means the cost of the raw materials (ore, coal, stamina potions) is higher than the selling price of the finished bars. This often happens when training for pure XP (e.g., Gold bars) or when market prices are unfavorable. The OSRS Blast Furnace Calculator helps you identify these situations.