OSRS Blast Furnace Calculator

OSRS Blast Furnace Profit & XP Calculator

Calculate your potential profit, XP, and costs for making bars at the Blast Furnace in Old School RuneScape.

How the OSRS Blast Furnace Calculator Works:

The calculator determines your profit and XP by taking into account the cost of ores, coal, stamina potions, and the Ring of Forging, then subtracting these from the selling price of the bars. It also estimates the time required based on your bars per hour.

• Cost per Bar: (Ore Price) + (Coal Price * Coal Needed per Bar) + (Stamina Cost per Bar) + (Ring of Forging Cost per Bar)
• Profit per Bar: (Bar Selling Price) – (Cost per Bar)
• Total Profit: (Profit per Bar) * (Number of Bars to Make)
• Total XP: (XP per Bar) * (Number of Bars to Make)
• Estimated Time: (Number of Bars to Make) / (Bars Per Hour)

Summary of Costs and Profits

Item	Quantity	Cost/Revenue (GP)	Total (GP)
Ore Cost	0	0	0
Coal Cost	0	0	0
Stamina Potions	0	0	0
Ring of Forging	0	0	0
Bar Revenue	0	0	0
Net Profit			0

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 maximize their gold per hour (GP/hr) at the Blast Furnace. This unique minigame, located in Keldagrim, offers some of the fastest Smithing experience rates and often the highest profit margins in the game, provided you manage your costs and efficiency.

Unlike traditional anvils, the Blast Furnace requires only half the coal for most bars and processes ores at an incredibly fast rate, making it a popular choice for both high-level smithing and money-making. However, its efficiency is heavily dependent on current Grand Exchange (GE) prices for ores, coal, and finished bars, as well as the player’s setup (e.g., Coal Bag, Ice Gloves, Ring of Forging) and stamina potion usage.

Who Should Use the OSRS Blast Furnace Calculator?

• Profit-Oriented Players: Those aiming to make significant gold while training Smithing. The calculator helps identify the most profitable bar type given current market prices.
• XP-Focused Players: While often profitable, the Blast Furnace is also a top-tier XP method. The calculator helps understand the cost per XP for different bars.
• Efficiency Enthusiasts: Players who want to fine-tune their setup and strategy to get the most out of every hour spent at the Blast Furnace.
• New & Returning Players: To understand the financial implications and requirements before investing time and resources into Blast Furnace smithing.

Common Misconceptions about the OSRS Blast Furnace Calculator

• “It’s always profitable”: While often true, market fluctuations can sometimes make certain bars unprofitable, or less profitable than other methods. Always check prices with an OSRS Blast Furnace Calculator.
• “It’s AFK”: The Blast Furnace is highly click-intensive and requires constant attention to maintain high rates, especially for run energy and bar collection.
• “Only for high levels”: While higher levels unlock better bars, even lower-level players (e.g., 30 Smithing for Steel) can benefit significantly.
• “Goldsmith Gauntlets are always best”: Goldsmith Gauntlets are excellent for Gold Bar XP, but for other bars at the Blast Furnace, they are not used. The Ring of Forging is the key item for coal saving.

OSRS Blast Furnace Calculator Formula and Mathematical Explanation

The core of the OSRS Blast Furnace Calculator lies in accurately determining the net profit and experience gained per bar, then scaling it up for your desired quantity. Here’s a step-by-step breakdown of the calculations:

Step-by-Step Derivation:

1. Determine Ore and Coal Requirements per Bar:
   • Steel Bar: 1 Iron Ore, 2 Coal (1 Coal with Ring of Forging)
   • Mithril Bar: 1 Mithril Ore, 4 Coal (3 Coal with Ring of Forging)
   • Adamantite Bar: 1 Adamantite Ore, 6 Coal (5 Coal with Ring of Forging)
   • Runite Bar: 1 Runite Ore, 8 Coal (7 Coal with Ring of Forging)
2. Calculate Cost of Ores: This is simply the price of the specific ore required for one bar.
3. Calculate Cost of Coal: Multiply the `coalPrice` by the `coalNeededPerBar` (adjusted for `useRingOfForging`).
4. Calculate Cost of Stamina Potions per Bar:
   • A 4-dose stamina potion costs `staminaPotionPrice`.
   • A common estimate is that one 4-dose stamina potion lasts for approximately 150-200 bars, depending on efficiency. For this calculator, we’ll use an average of 175 bars per 4-dose potion.
   • `staminaCostPerBar` = `staminaPotionPrice` / 175.
5. Calculate Cost of Ring of Forging per Bar:
   • A Ring of Forging has 140 charges and costs `ringOfForgingPrice`.
   • If `useRingOfForging` is checked, `ringCostPerBar` = `ringOfForgingPrice` / 140. Otherwise, it’s 0.
6. Calculate Total Cost per Bar:
   `costPerBar` = `orePrice` + `coalCostPerBar` + `staminaCostPerBar` + `ringCostPerBar`
7. Calculate Profit per Bar:
   `profitPerBar` = `barSellingPrice` – `costPerBar`
8. Calculate Total Profit:
   `totalProfit` = `profitPerBar` * `numBarsToMake`
9. Calculate Total XP:
   `totalXP` = `xpPerBar` * `numBarsToMake`
10. Calculate Estimated Time:
    `estimatedTimeHours` = `numBarsToMake` / `barsPerHourInput`

Variables Table:

Key Variables for OSRS Blast Furnace Calculations

Variable	Meaning	Unit	Typical Range
barType	Type of bar being smithed	N/A	Steel, Mithril, Adamant, Rune
orePrice	Grand Exchange price of the primary ore	GP	100 – 15,000
coalPrice	Grand Exchange price of Coal	GP	150 – 250
barSellingPrice	Grand Exchange selling price of the finished bar	GP	200 – 20,000
numBarsToMake	Desired total number of bars to smith	Bars	1 – 1,000,000+
barsPerHourInput	Player’s estimated bars smithed per hour	Bars/hour	1,000 – 3,000
staminaPotionPrice	Cost of a 4-dose Stamina Potion	GP	7,000 – 10,000
ringOfForgingPrice	Cost of a new Ring of Forging (140 charges)	GP	8,000 – 12,000
useRingOfForging	Whether a Ring of Forging is used (saves coal)	Boolean	True/False
hasCoalBag	Whether the player owns a Coal Bag (efficiency)	Boolean	True/False
hasIceGloves	Whether the player owns Ice Gloves (efficiency)	Boolean	True/False

Practical Examples (Real-World Use Cases)

Let’s walk through a couple of scenarios using the OSRS Blast Furnace Calculator to illustrate its utility.

Example 1: Maximizing Profit with Steel Bars

A player wants to make 10,000 Steel Bars and is focused on profit. They have all the recommended gear.

• Bar Type: Steel Bar
• Iron Ore Price: 150 GP
• Coal Price: 200 GP
• Steel Bar Selling Price: 300 GP
• Number of Bars to Make: 10,000
• Estimated Bars Per Hour: 2500
• Stamina Potion (4-dose) Price: 8,000 GP
• Ring of Forging Price: 10,000 GP
• Use Ring of Forging: Yes

Calculation Output:

• Coal needed per Steel Bar (with RoF): 1
• Cost per Steel Bar: 150 (Iron) + 200 (Coal) + (8000/175) (Stamina) + (10000/140) (RoF) ≈ 150 + 200 + 45.71 + 71.43 = 467.14 GP
• Profit per Steel Bar: 300 (Selling) – 467.14 (Cost) = -167.14 GP
• Total Profit: -167.14 * 10,000 = -1,671,400 GP
• Total XP Gained: 17.5 * 10,000 = 175,000 XP
• Estimated Time: 10,000 / 2500 = 4 hours

Interpretation: In this scenario, making Steel Bars would result in a significant loss. The player should either wait for better prices, consider a different bar type, or focus purely on XP if profit isn’t possible.

Example 2: High-Level Adamantite Bar Smithing for XP and Profit

A player with high Smithing wants to make 5,000 Adamantite Bars, aiming for both XP and profit.

• Bar Type: Adamantite Bar
• Adamantite Ore Price: 1,000 GP
• Coal Price: 200 GP
• Adamantite Bar Selling Price: 1,500 GP
• Number of Bars to Make: 5,000
• Estimated Bars Per Hour: 1500
• Stamina Potion (4-dose) Price: 8,000 GP
• Ring of Forging Price: 10,000 GP
• Use Ring of Forging: Yes

Calculation Output:

• Coal needed per Adamantite Bar (with RoF): 5
• Cost per Adamantite Bar: 1000 (Ore) + (200*5) (Coal) + (8000/175) (Stamina) + (10000/140) (RoF) ≈ 1000 + 1000 + 45.71 + 71.43 = 2117.14 GP
• Profit per Adamantite Bar: 1500 (Selling) – 2117.14 (Cost) = -617.14 GP
• Total Profit: -617.14 * 5,000 = -3,085,700 GP
• Total XP Gained: 37.5 * 5,000 = 187,500 XP
• Estimated Time: 5,000 / 1500 = 3.33 hours (3 hours 20 minutes)

Interpretation: Similar to the Steel Bar example, current prices make Adamantite Bars unprofitable. This highlights the importance of using the OSRS Blast Furnace Calculator regularly to adapt to market changes. Players might need to buy ores and coal when prices are low and sell bars when prices are high, or consider alternative smithing methods.

How to Use This OSRS Blast Furnace Calculator

Using the OSRS Blast Furnace Calculator is straightforward, designed to give you quick and accurate insights into your smithing endeavors. Follow these steps to get the most out of the tool:

Step-by-Step Instructions:

1. Select Bar Type: Choose the type of bar you intend to smith from the “Bar Type” dropdown menu (Steel, Mithril, Adamantite, or Runite). This will automatically update the default ore and bar selling prices, as well as XP rates.
2. Enter Ore Price: Input the current Grand Exchange price for the specific ore required for your chosen bar type (e.g., Iron Ore for Steel Bars).
3. Enter Coal Price: Input the current Grand Exchange price for Coal.
4. Enter Bar Selling Price: Input the current Grand Exchange selling price for the finished bar you are making.
5. Enter Number of Bars to Make: Specify the total quantity of bars you plan to smith.
6. Enter Estimated Bars Per Hour: Provide your personal estimate of how many bars you can make per hour at the Blast Furnace. This is crucial for accurate time estimates.
7. Enter Stamina Potion Price: Input the current Grand Exchange price for a 4-dose Stamina Potion.
8. Enter Ring of Forging Price: Input the current Grand Exchange price for a new Ring of Forging.
9. Check “Use Ring of Forging”: Tick this box if you plan to use a Ring of Forging, which saves 1 coal per bar. This is highly recommended for profit.
10. Check “Have Coal Bag” and “Have Ice Gloves”: These checkboxes are for informational purposes, reminding you of essential gear for optimal efficiency, but do not directly affect the cost calculation in this tool (as their cost is usually a one-time purchase).
11. View Results: As you adjust the inputs, the results will update in real-time, showing your total profit, profit per bar, total XP, total cost, and estimated time.
12. Reset or Copy: Use the “Reset” button to clear all inputs and revert to default values. Use the “Copy Results” button to quickly copy the key outputs to your clipboard for sharing or record-keeping.

How to Read Results:

• Total Profit: This is your primary metric. A positive number indicates profit, a negative number indicates a loss. Aim for a high positive value.
• Profit per Bar: Shows the net gain or loss for each individual bar smithed.
• Total XP Gained: The total Smithing experience you will earn from making the specified number of bars.
• Total Cost of Supplies: The cumulative cost of all ores, coal, stamina potions, and Ring of Forging charges for your chosen quantity of bars.
• Estimated Time: The approximate duration required to smith all the bars, based on your “Bars Per Hour” input.

Decision-Making Guidance:

Use the OSRS Blast Furnace Calculator to compare different bar types, adjust your target quantity, and monitor market prices. If a bar type shows a loss, consider waiting for prices to shift, or switch to a different bar that is currently profitable. Remember that the Blast Furnace is highly dynamic, and frequent checks with this OSRS Blast Furnace Calculator can save you millions of GP.

Key Factors That Affect OSRS Blast Furnace Calculator Results

The profitability and efficiency of the Blast Furnace are influenced by several dynamic factors. Understanding these can help you make informed decisions and maximize your gains using the OSRS Blast Furnace Calculator.

• Grand Exchange Prices (Ore, Coal, Bars): This is the single most critical factor. Fluctuations in the prices of raw ores, coal, and the finished bars directly impact your profit margins. A slight increase in coal price or a drop in bar selling price can turn a profitable venture into a loss. Always check current GE prices before a session.
• Player Efficiency (Bars Per Hour): Your personal speed and attention to the game significantly affect the “Estimated Bars Per Hour” input. Higher efficiency means more bars made in less time, leading to higher total profit and XP rates. This includes quick banking, proper run energy management, and minimal AFK time.
• Stamina Potion Usage: The Blast Furnace consumes a lot of run energy. Stamina potions are essential for maintaining high efficiency. The cost of these potions is a recurring expense that must be factored into the overall cost per bar.
• Ring of Forging: This ring saves 1 coal per bar, making it an indispensable item for profit. While it has a purchase cost and limited charges, its coal-saving benefit almost always outweighs its cost, especially for higher-tier bars. The OSRS Blast Furnace Calculator accounts for its cost per charge.
• Coal Bag: While not a direct cost, owning a Coal Bag (unlocked from Motherlode Mine) is crucial for efficiency. It allows you to carry 27 additional coal, significantly reducing banking trips and increasing your bars per hour. Without it, your efficiency will be much lower.
• Ice Gloves: Similar to the Coal Bag, Ice Gloves (obtained from the Temple of Ikov quest) are a requirement for efficient Blast Furnace use. They allow you to collect hot bars directly from the conveyor belt without taking damage, eliminating the need for a bucket of water or waiting for bars to cool.
• Smithing Level: While not directly a cost factor, your Smithing level determines which bars you can make. Higher levels unlock more profitable bars (e.g., Adamantite, Runite), which generally offer better GP/hr and XP/hr, but also come with higher initial ore costs.
• World Population/Competition: On very crowded worlds, there might be more competition for the Blast Furnace machine, potentially slowing down your rates if you have to wait for others. This indirectly affects your “Bars Per Hour” and thus your overall profit and time.

Frequently Asked Questions (FAQ) about the OSRS Blast Furnace Calculator

Q1: Is the Blast Furnace always profitable?

A1: No, not always. While often one of the best money-makers in OSRS Smithing, market prices for ores, coal, and bars fluctuate. Always use an OSRS Blast Furnace Calculator to check current profitability before you start.

Q2: What Smithing level do I need for the Blast Furnace?

A2: You can start using the Blast Furnace at level 30 Smithing for Steel Bars. Higher levels unlock more bar types: Mithril at 50, Adamantite at 70, and Runite at 85.

Q3: Do I need a Ring of Forging?

A3: For profit, yes, it’s highly recommended. The Ring of Forging saves 1 coal per bar, significantly reducing your costs. The OSRS Blast Furnace Calculator includes its cost per charge.

Q4: What about Goldsmith Gauntlets? Are they used at the Blast Furnace?

A4: Goldsmith Gauntlets are primarily used for making gold bars at an anvil for maximum XP. They are not used for making other bar types at the Blast Furnace, where the Ring of Forging is the key item for cost reduction.

Q5: How many stamina potions do I need per hour?

A5: This varies by efficiency, but generally, one 4-dose stamina potion lasts for about 150-200 bars. For high efficiency, you might use 1-2 potions per hour. The OSRS Blast Furnace Calculator estimates this cost per bar.

Q6: What is a good “Bars Per Hour” rate?

A6: Good rates vary by bar type and player efficiency. For Steel, 2500-3000 bars/hr is excellent. For Mithril, 1800-2200. For Adamantite, 1500-1800. For Runite, 1000-1300. Practice and proper setup are key.

Q7: Why is my “Total Profit” negative?

A7: A negative total profit means the cost of your raw materials (ores, coal, stamina, Ring of Forging charges) is higher than the selling price of the finished bars. This indicates that making that specific bar type is currently unprofitable. You should consider other options or wait for market prices to change.

Q8: Can I use this OSRS Blast Furnace Calculator for F2P?

A8: The Blast Furnace is a members-only minigame, so this calculator is exclusively for OSRS members. F2P players have different smithing methods.

Related Tools and Internal Resources

To further enhance your Old School RuneScape experience and optimize your gameplay, consider exploring these related tools and guides:

• OSRS Smithing Guide: A comprehensive guide to all things Smithing, including levels, methods, and quests.
• OSRS Money Making Guide: Discover various ways to earn gold in OSRS, from low-level to high-level methods.
• OSRS Blast Furnace Wiki: Detailed information on the Blast Furnace minigame, including requirements, setup, and mechanics.
• Ring of Forging Details: Learn more about this essential item for Blast Furnace profitability.
• Coal Bag Information: Understand how the Coal Bag can boost your Blast Furnace efficiency.
• Ice Gloves Guide: Find out how to obtain and use Ice Gloves for seamless bar collection.