Giants’ Foundry Calculator for OSRS
Your expert tool for calculating Smithing XP, Foundry Points, and optimal strategies in Old School RuneScape’s Giants’ Foundry minigame.
Giants’ Foundry Calculator
Enter your current Smithing level (15-99).
Represents your performance during the minigame. Perfect gives a small bonus.
Select the first metal for the alloy.
Select the second metal for the alloy (28 bars total).
Popular Alloy Comparisons
| Alloy Combination (14/14) | Avg. Metal Score | Approx. Base XP per Sword | Approx. Base Points |
|---|---|---|---|
| Steel / Mithril | 65 | ~6,000 | ~109 |
| Mithril / Adamantite | 95 | ~10,500 | ~161 |
| Adamantite / Runite | 130 | ~16,500 | ~224 |
| Steel / Adamantite | 80 | ~8,200 | ~135 |
What is the Giants’ Foundry Calculator?
The giants foundry calculator is a specialized tool for the Old School RuneScape (OSRS) minigame, Giants’ Foundry. This minigame offers an alternative, engaging, and often profitable method for training the Smithing skill. Instead of mass-producing items at an anvil, players fulfill commissions from the giant Kovac by forging massive swords. Success in the foundry depends on creating high-quality alloys from different metal bars.
This calculator helps players strategize by predicting the experience (XP) and reward points they will receive for a given combination of metals and their Smithing level. By using the giants foundry calculator, you can determine the most efficient or profitable alloys, saving time and in-game currency. Check out our OSRS Smithing Guide for more training methods.
Giants’ Foundry Formula and Explanation
The core of the Giants’ Foundry mechanic revolves around the “Metal Score” of the alloy you create. This score directly influences the XP and points you gain. The formula is surprisingly straightforward:
Metal Score = (Value of Metal 1 + Value of Metal 2) / 2
Each type of bar has a hidden value. Creating an alloy by mixing two different metals averages their values, and this average is your final Metal Score. This score then determines the number of stages required to complete the sword and the base rewards. Your Smithing level provides a significant multiplier to the final XP gained.
Variables Table
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Smithing Level | Your character’s current skill level in Smithing. | Level | 15 – 99 |
| Metal Value | A hidden base value assigned to each type of metal bar. | Points (unitless) | 10 (Bronze) – 150 (Runite) |
| Metal Score | The average quality of the two metals used in the alloy. | Score (unitless) | 10 – 150 |
| Quality Multiplier | A bonus or penalty based on your performance. | Multiplier | 0.8x – 1.1x |
Practical Examples
Example 1: Mid-Level Player
A player with Level 60 Smithing wants to train efficiently using affordable bars.
- Inputs:
- Smithing Level: 60
- Metal 1: Steel (14 bars)
- Metal 2: Mithril (14 bars)
- Calculation:
- Steel has a value of 50, Mithril has a value of 80.
- Metal Score = (50 + 80) / 2 = 65.
- Results:
- XP per Sword: ~6,000
- Foundry Points: ~109
Example 2: High-Level Player Aiming for Max XP
A player with Level 88 Smithing is using high-tier bars for the fastest possible experience.
- Inputs:
- Smithing Level: 88
- Metal 1: Adamantite (14 bars)
- Metal 2: Runite (14 bars)
- Calculation:
- Adamantite has a value of 110, Runite has a value of 150.
- Metal Score = (110 + 150) / 2 = 130.
- Results:
- XP per Sword: ~18,500
- Foundry Points: ~224
These examples show how a higher Metal Score and Smithing level dramatically increase your rewards, making the giants foundry calculator essential for planning. For other profitable activities, see our guide on OSRS Money Making.
How to Use This Giants’ Foundry Calculator
- Enter Your Smithing Level: Input your current Smithing level. This is the most important factor for your final XP.
- Select Commission Quality: Choose a value that reflects your typical performance. If you rarely make mistakes, select ‘Perfect’. ‘Default’ is suitable for most players.
- Choose Your Metals: Using the dropdown menus, select the two types of metal bars you plan to use for your alloy. The calculator assumes a 14/14 split for 28 total bars per sword.
- Review Your Results: The calculator will instantly update, showing your expected XP per sword, points, XP per hour, and the Metal Score of your chosen alloy.
- Analyze the Chart and Table: Use the dynamic chart to visualize the reward ratio and the table to quickly compare popular, efficient alloy combinations.
Key Factors That Affect Giants’ Foundry Results
- Smithing Level: Directly scales the amount of XP you receive. The higher your level, the bigger the reward.
- Metal Choice: The combination of bars determines your Metal Score. High-tier bars like Adamantite and Runite give the best scores. Using our giants foundry calculator helps find the sweet spot between cost and reward.
- Alloy Combination: Always use two different types of metal. Using 28 of a single metal type results in a much lower score than a 14/14 alloy of two different metals.
- Player Performance: Each mistake (overheating, overcooling, wrong tool) slightly reduces the final quality and your reward. Playing well can net you up to a 10% bonus.
- Unlocked Moulds: As you spend points to unlock new mould parts from Kovac’s shop, you can better match commission requirements, leading to a small but consistent boost in quality. For other minigame benefits, see our Blast Furnace Guide.
- Swords per Hour: Your personal speed and focus determine how many swords you can complete. Our calculator assumes an average rate (around 25-30 swords/hr), but your actual XP/hr will depend on your efficiency.
Frequently Asked Questions (FAQ)
1. Is Giants’ Foundry good XP?
Yes, it is one of the best Smithing training methods, offering high XP rates (up to 250k+ XP/hr at high levels) while often being profitable or breaking even, unlike traditional smithing.
2. What are the best bars for the Giants’ Foundry?
For pure XP, the highest-tier bars you can use (e.g., Adamantite/Runite) are the best. For a balance of cost and XP, many players use Steel/Mithril or Mithril/Adamantite alloys. Our giants foundry calculator can find the best option for your budget.
3. How many bars do I need for one sword?
You need 28 bars in total to create one giant sword.
4. Do I have to use two different metals?
Yes. To get a good score, you must create an alloy. Using 28 of the same bar type gives a very poor score and is extremely inefficient.
5. Does wearing the Smithing outfit help?
The Smith’s Uniform (bought from the rewards shop) does not increase XP, but it increases the speed of actions at a regular anvil. It has no effect *inside* the foundry itself.
6. What smithing level do I need to start?
You need to complete the “Sleeping Giants” quest, which requires level 15 Smithing to begin the minigame.
7. How does the calculator handle units?
All units are in-game concepts like “Level”, “XP”, and “Points”. There are no real-world units, making the calculations straightforward.
8. How accurate is the XP per hour calculation?
It’s an estimate based on an average number of swords completed per hour. Your actual rate may be higher or lower depending on your focus and efficiency.