OSRS Blast Furnace Calculator

Optimize your OSRS Smithing training by calculating profit, experience, and efficiency for various bars at the Blast Furnace. Get the most out of your RuneScape grind!

Blast Furnace Profit & XP Calculator

Blast Furnace Results

Calculating…

Smelting Data and Experience Rates

Bar Smelting Details

Bar Type	Ores Required	Base XP per Bar	Min Smithing Level	High Alchemy Value (Est.)
Iron Bar	2 Iron Ore	15	15	~540
Steel Bar	2 Iron Ore, 2 Coal	17.5	30	~720
Mithril Bar	4 Mithril Ore, 4 Coal	30	55	~1,260
Adamantite Bar	4 Adamantite Ore, 4 Coal	37.5	70	~1,800
Runeite Bar	4 Runite Ore, 8 Coal	50	85	~2,400

Profitability Over Time

What is the OSRS Blast Furnace Calculator?

The OSRS Blast Furnace Calculator is a specialized tool designed for players of the popular Massively Multiplayer Online Role-Playing Game (MMORPG) Old School RuneScape (OSRS). It helps players determine the profitability and experience gains associated with using the Blast Furnace, a unique minigame interface located in deep wilderness. This calculator specifically focuses on the smelting of various metal bars, which is a core component of the Smithing skill.

Who Should Use It?

This calculator is invaluable for any OSRS player looking to train their Smithing level efficiently and profitably. This includes:

• Ironman accounts: Who need to self-sufficiently gather resources and maximize XP/profit for their progression.
• Free-to-Play (F2P) and Pay-to-Play (P2P) players: Who want to make money while training Smithing or simply want the fastest method.
• High-level players: Aiming to complete the Smithing level requirements for questing or unlocking new gear.
• Players interested in the Mining and Smithing rebalance: Understanding the economics of different bars is crucial.

Common Misconceptions

Several misconceptions surround the Blast Furnace:

• It’s always the most profitable: While often very profitable, market prices fluctuate. Other methods might be better at certain times.
• It’s the fastest XP: For pure experience rates, some methods like making darts or platebodies might be faster, but usually at a much higher cost. The Blast Furnace offers a good balance.
• It requires high stats: While higher Smithing levels unlock better bars, the Blast Furnace can be used effectively from relatively low levels, especially for iron and steel.

OSRS Blast Furnace Calculator Formula and Mathematical Explanation

The OSRS Blast Furnace Calculator uses several formulas to provide accurate insights. The core calculation revolves around determining the cost of producing a single bar and comparing it to its market value, alongside estimating experience gains.

Cost Per Bar Calculation

The cost of producing one bar is determined by the combined Grand Exchange (GE) price of the ores required, plus a small overhead for the Blast Furnace itself (though we often simplify this by just considering ore costs).

Formula:

Cost per Bar = (Ore 1 Amount * Ore 1 Price) + (Ore 2 Amount * Ore 2 Price)

Profit Per Bar Calculation

Profit is the difference between the bar’s GE price and the calculated cost to produce it.

Formula:

Profit per Bar = Bar Price - Cost per Bar

Experience Per Hour Calculation

Experience per hour depends on the base experience gained per bar and the player’s ability to smelt bars rapidly. The smelting speed is influenced by Smithing level, using the ice cooler, and efficient bank/ore distribution.

A common estimate for smelting bars at the Blast Furnace, assuming efficient play (e.g., using the ice cooler, minimal banking time, and constant bar production), is around 200-300 bars per hour for common bars, increasing slightly for higher-level bars or with perfect efficiency.

Formula:

XP per Hour = (Base XP per Bar * Bars Smelted per Hour)

The “Bars Smelted per Hour” is an approximation. For this calculator, we’ll use a baseline of 250 bars/hour as a representative efficiency, adjustable based on player skill and specific bar type.

Variable Explanations

Here’s a breakdown of the variables used in our OSRS Blast Furnace Calculator:

Variable	Meaning	Unit	Typical Range
Ore 1 Amount	Quantity of the primary ore needed per bar.	Ores	1-4
Ore 2 Amount	Quantity of the secondary ore needed per bar (e.g., Coal).	Ores	0-8
Ore 1 Price	Grand Exchange market price of the first ore.	Coins	10 – 500+
Ore 2 Price	Grand Exchange market price of the second ore.	Coins	10 – 500+
Bar Price	Grand Exchange market price of the finished bar.	Coins	50 – 5,000+
Smithing Level	Player’s current Smithing skill level.	Level	1 – 99
Base XP per Bar	Experience awarded by the game for successfully smelting one bar.	XP	15 – 50
Bars Smelted per Hour	Estimated rate of bar production at the Blast Furnace.	Bars/Hour	200 – 300+
Cost per Bar	Total cost of ores required to create one bar.	Coins	Variable
Profit per Bar	Net profit after subtracting costs from the bar’s sale price.	Coins	Variable
XP per Hour	Total Smithing experience gained within an hour.	XP/Hour	Variable

Practical Examples (Real-World Use Cases)

Let’s look at a couple of scenarios to see how the OSRS Blast Furnace Calculator works in practice.

Example 1: Smelting Steel Bars

A player wants to train Smithing using Steel Bars. They check the Grand Exchange:

• Iron Ore Price: 120 coins
• Coal Price: 250 coins
• Steel Bar Price: 850 coins
• Smithing Level: 50

Inputs for Calculator:

• Bar Type: Steel Bar
• Ore 1 Amount: 2 (Iron Ore)
• Ore 2 Amount: 2 (Coal)
• Ore 1 Price: 120
• Ore 2 Price: 250
• Bar Price: 850
• Smithing Level: 50

Calculator Output:

• Cost per Bar: (2 * 120) + (2 * 250) = 240 + 500 = 740 coins
• Profit per Bar: 850 – 740 = 110 coins
• XP per Bar: 17.5
• XP per Hour (Est. @ 250 bars/hr): 17.5 * 250 = 4,375 XP/Hour

Interpretation: Smelting Steel Bars at these prices is profitable, yielding 110 coins per bar and providing a decent ~4,375 XP per hour. This is a good method for balancing profit and experience.

Example 2: Smelting Runeite Bars

A high-level player considers smelting Runeite Bars for maximum profit, checking current GE prices:

• Runeite Ore Price: 3,000 coins
• Coal Price: 400 coins
• Runeite Bar Price: 6,500 coins
• Smithing Level: 85

Inputs for Calculator:

• Bar Type: Runeite Bar
• Ore 1 Amount: 4 (Runeite Ore)
• Ore 2 Amount: 8 (Coal)
• Ore 1 Price: 3000
• Ore 2 Price: 400
• Bar Price: 6500
• Smithing Level: 85

Calculator Output:

• Cost per Bar: (4 * 3000) + (8 * 400) = 12000 + 3200 = 15,200 coins
• Profit per Bar: 6500 – 15200 = -8,700 coins (Loss)
• XP per Bar: 50
• XP per Hour (Est. @ 250 bars/hr): 50 * 250 = 12,500 XP/Hour

Interpretation: In this scenario, Runeite Bars are not profitable, resulting in a significant loss per bar. However, they offer the highest XP per bar (50 XP). A player might choose to smelt them if they prioritize rapid XP gain over profit, or if they are using materials obtained from other activities (like PvM drops) and don’t need to buy them from the GE.

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 Smithing training:

Step-by-Step Guide

1. Select Bar Type: Use the dropdown menu to choose the metal bar you intend to smelt (e.g., Steel, Adamantite).
2. Input Ore Amounts: Enter the quantity of each ore required to create ONE of the selected bar type. The calculator pre-fills common values (e.g., 2 iron ore and 2 coal for steel).
3. Enter Market Prices: Input the current Grand Exchange prices for each ore and the resulting bar. Accurate prices are crucial for profit calculations.
4. Enter Your Smithing Level: Input your current Smithing level. This influences which bars you can smelt and is used for context.
5. View Results: The calculator will automatically update in real-time, displaying:
   • Primary Result (Profit per Bar): The main highlighted figure, showing your profit or loss for each bar smelted.
   • Intermediate Values: Cost per Bar (total ore cost) and estimated XP per Hour.
   • Formula Explanation: A brief description of how the results are calculated.
6. Utilize Tables and Charts: Refer to the Smelting Data table for base XP and level requirements, and the Profitability Chart for a visual representation of profit versus XP gains over a hypothetical hour.
7. Reset or Copy: Use the “Reset Defaults” button to revert to initial values, or the “Copy Results” button to easily transfer the calculated profit, costs, and XP/hour to your clipboard.

How to Read Results

• Positive Profit per Bar: Indicates you make money smelting this bar. Higher positive numbers are better for profit-focused training.
• Negative Profit per Bar (Loss): Indicates you lose money. This might still be acceptable if your priority is very fast experience gain.
• XP per Hour: A key metric for efficiency. Higher numbers mean faster level-ups. Compare this across different methods and bars.
• Cost per Bar: Helps understand the breakdown of your expenses.

Decision-Making Guidance

Use the calculator to compare different bars. If two bars offer similar XP/hour, choose the one with higher profit. If profit is low or negative, assess if the XP gain is worth the cost based on your goals. Always check current OSRS Grand Exchange prices for the most accurate calculations.

Key Factors That Affect OSRS Blast Furnace Results

Several dynamic elements within RuneScape significantly influence the outcomes of using the Blast Furnace. Understanding these factors is key to maximizing your efficiency and profitability.

1. Grand Exchange Market Prices:

   This is the single most crucial factor. The prices of ores (Iron, Coal, Mithril, Adamantite, Runite) and the resulting bars fluctuate constantly based on supply and demand. A profitable bar one day might be a loss the next. Always check current prices before committing to a training method.

2. Smithing Level Requirements:

   Higher-level bars (Mithril, Adamantite, Runite) offer more experience per bar but require higher Smithing levels (55+, 70+, 85+ respectively). Players below these levels cannot smelt them, limiting their options. The calculator helps compare viable options for your current level.

3. Smelting Speed and Efficiency:

   The “Bars Smelted per Hour” is an estimate. Actual rates depend on player actions: efficiently using the ‘ice cooler’ to prevent bars from overheating, quick movement between bank/furnace, and minimizing downtime. Players aiming for maximum XP will focus intensely on optimizing this speed.

4. Ore Availability and Gathering Methods:

   For Ironman accounts especially, the ability to gather ores themselves impacts profitability. If Iron Ore is easily mined, its effective cost might be lower than its GE price. Similarly, obtaining ores as drops from PvM (like from the Nightmare Zone or other bosses) can make smelting expensive bars like Runeite profitable even if GE prices are high.

5. Alternative Training Methods:

   The Blast Furnace competes with other Smithing methods like smelting bars directly at a standard furnace (less efficient), smithing platebodies, or crafting/fletching. The profitability and XP rates of these alternatives, especially when considering item sink mechanics and item prices, affect the overall value proposition of the Blast Furnace.

6. Blast Furnace Upgrade Costs:

   Players can invest points earned at the Blast Furnace into upgrades like the ‘Water-cooling system’ (reduces bar overheating) and ‘Coal bag’ (holds 81 coals). While these require an initial investment, they significantly increase smelting speed and efficiency, directly impacting XP per hour and potentially profit margins over time.

7. Coal Bag and Use of Coal:

   Many high-tier bars require significant amounts of coal. The ‘Coal bag’ is essential for efficiency. The price and availability of coal directly impact the cost of steel, mithril, adamantite, and runite bars. If coal prices spike, these methods become less profitable.

Frequently Asked Questions (FAQ)

What is the most profitable bar to smelt at the Blast Furnace?

This heavily depends on current OSRS Grand Exchange prices. Historically, bars like Mithril, Adamantite, and Runeite can be profitable, especially when ore prices are low or bars are in high demand. Always use the calculator with live prices to determine current profitability. Sometimes, even Iron or Steel bars can be profitable if their prices are unusually high relative to the ores.

Is Blast Furnace Smithing good XP?

Blast Furnace offers a good balance between profit and experience. While methods like making platebodies or darts might offer higher raw XP per hour, they usually come at a significant cost. Blast Furnace provides respectable XP rates (e.g., 5,000-15,000+ XP/hour depending on the bar and efficiency) often with profit or minimal loss, making it a popular choice.

Do I need to use the ice cooler?

Using the ‘ice cooler’ (or other cooling methods like the ‘Water-cooling system’ upgrade) is highly recommended. It prevents bars from overheating and potentially being lost or requiring extra steps. It significantly increases the rate at which you can smelt bars, boosting your XP per hour. Without it, your efficiency drops considerably.

How many bars can I smelt per hour at the Blast Furnace?

An efficient player using the Blast Furnace can typically smelt between 200 to 300 bars per hour, depending on the bar type and if they have purchased upgrades like the ‘Water-cooling system’. This calculator uses an estimate of 250 bars/hour for XP calculations, but actual rates may vary.

What are the requirements for smelting Adamantite bars at the Blast Furnace?

To smelt Adamantite bars, you need a Smithing level of 70. Each Adamantite bar requires 4 Adamantite Ore and 4 Coal. It provides 37.5 base XP per bar.

Can I use this calculator for non-Blast Furnace Smithing?

This specific calculator is tailored for the Blast Furnace mechanics, focusing on ore costs and bar prices. While it calculates XP/hour, it doesn’t account for the XP rates or material costs of other Smithing methods like smithing platebodies directly at a bank. For those, you would need a different type of calculator.

What if the GE price of an ore is 0?

If an ore’s GE price is 0, it typically means it’s not traded on the Grand Exchange, or its price is negligibly low. For calculation purposes, you should input 0. This is common for ores used in very basic bars like Iron Ore when smelting Iron Bars.

How does the Smithing Level affect profit?

The Smithing Level itself doesn’t directly alter the profit calculation (which is based on market prices). However, it determines *which* bars you can smelt. Higher levels unlock more valuable or XP-intensive bars, which can then be assessed for profit using the calculator. A higher level might also unlock access to better ores that have different price points.

What is the Blast Furnace upgrade system?

Players can earn points by using the Blast Furnace minigame, which can be exchanged for various upgrades. Key upgrades include the Coal Bag (holds 81 Coal), the Water-cooling System (significantly reduces bar overheating, boosting XP rates), and the Runite Limbs (allows smelting of Rune bars more efficiently). These upgrades improve efficiency and profitability.