FoE Arc Calculator: Optimize Your Great Building Contributions
Use this FoE Arc Calculator to determine the optimal Forge Point (FP) contributions for Great Building (GB) spots, ensuring you maximize your profit using the 1.9 thread strategy with your Arc bonus. Never overpay or miss out on FPs again!
FoE Arc Calculator
The current level of the Great Building you are supporting. (e.g., 10, 60, 80)
Your Arc’s bonus percentage. A level 80 Arc gives 90%.
The total Forge Points required to level up the GB. Find this in the GB’s contribution window.
How many FPs the GB owner has already contributed.
The profit multiplier you aim for. 1.9 is standard, some guilds use 1.92 or higher.
Base Rewards for Each Spot (FPs)
The base FP reward for 1st place (before Arc bonus).
The base FP reward for 2nd place.
The base FP reward for 3rd place.
The base FP reward for 4th place. (Often 0 for lower GB levels)
The base FP reward for 5th place. (Often 0 for lower GB levels)
A) What is a FoE Arc Calculator?
A FoE Arc Calculator is an essential tool for players of Forge of Empires (FoE) who own the Great Building (GB) called “The Arc.” The Arc provides a significant bonus to Forge Point (FP) rewards and blueprints when contributing to other players’ Great Buildings. This calculator helps players determine the precise amount of FPs to contribute to a GB spot to achieve a specific profit margin, typically referred to as the “1.9 rate” or “1.9 thread.”
The “1.9 thread” is a community-driven strategy where players contribute FPs to a GB spot in exchange for a reward (FPs, blueprints, medals). The “1.9” signifies that for every 1 FP contributed, the supporter expects to receive 1.9 FPs back (including the original FP). This ensures a healthy profit for the supporter while helping the GB owner level up their building efficiently.
Who Should Use a FoE Arc Calculator?
- Arc Owners: Players with an Arc Great Building (especially level 80+) who want to maximize their FP and blueprint gains by supporting other players’ GBs.
- GB Owners: Players leveling their own Great Buildings who want to set up a “1.9 thread” to attract supporters and ensure their GBs are leveled quickly and cost-effectively.
- Guild Members: Anyone participating in guild 1.9 threads or looking to contribute to guildmates’ GBs for mutual benefit.
- Strategic Players: Those who want to optimize their FP spending and earning in Forge of Empires.
Common Misconceptions about the FoE Arc Calculator and 1.9 Thread
- It’s always exactly 1.9: While 1.9 is the standard, some guilds or players use slightly different rates (e.g., 1.92, 1.95) based on their community’s agreements or individual profit goals. The calculator allows you to adjust this.
- It’s only for FPs: While FPs are the primary focus, the Arc also boosts blueprint and medal rewards, making contributions even more valuable. The calculator focuses on the FP aspect for simplicity.
- It’s cheating: The 1.9 thread is a widely accepted and encouraged community strategy within Forge of Empires, facilitating cooperation and growth among players. It’s not an exploit.
- It’s too complicated: While the underlying math can seem daunting, a FoE Arc Calculator simplifies it, making optimal contributions accessible to everyone.
B) FoE Arc Calculator Formula and Mathematical Explanation
The core of the FoE Arc Calculator lies in ensuring a specific profit ratio (the “1.9 rate”) for supporters while accurately determining the FPs needed to secure each spot. The calculation works backward from the total FPs required for a GB level.
Step-by-Step Derivation:
- Determine Arc-Boosted Reward: For each spot (1st, 2nd, etc.), the base FP reward is boosted by your Arc’s percentage.
Arc Boosted Reward = Base Reward * (1 + Arc Bonus / 100) - Calculate Supporter Contribution: To achieve the desired 1.9 rate (or custom rate), the supporter’s contribution is derived from the Arc-boosted reward.
Supporter Contribution = Arc Boosted Reward / Desired 1.9 Rate - Calculate Net Profit: The profit a supporter makes is the difference between their Arc-boosted reward and their contribution.
Net Profit = Arc Boosted Reward - Supporter Contribution - Calculate FPs to Secure Spot (Owner’s View): This is the most critical part for the GB owner. It determines how many FPs must be on the GB to “secure” a specific spot, meaning all subsequent spots are covered by supporters at the desired rate. This is calculated by working backward from the total FPs needed for the level.
- For the 5th spot:
FPs to Secure 5th = Total FPs to Level - Supporter Contribution (5th) - For the 4th spot:
FPs to Secure 4th = FPs to Secure 5th - Supporter Contribution (4th) - …and so on, up to the 1st spot.
This value tells the owner how many FPs they need to put in *before* that spot is taken by a supporter to ensure the 1.9 rate for all subsequent spots.
- For the 5th spot:
Variable Explanations:
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
GB Level |
The current level of the Great Building. Influences base rewards. | Level | 1 – 100+ |
Arc Bonus |
Your Arc’s bonus percentage for FP rewards. | % | 0% – 90% (for Lvl 80 Arc) |
Total FPs to Level |
Total Forge Points required to complete the current GB level. | FPs | 100 – 1,000,000+ |
Owner's FPs |
Forge Points already contributed by the GB owner. | FPs | 0 – Total FPs to Level |
Desired 1.9 Rate |
The target profit multiplier for supporters. | Ratio | 1.90 – 1.95 |
Base Reward (Spot X) |
The unboosted FP reward for taking a specific spot (1st, 2nd, etc.). | FPs | 0 – 100,000+ |
Arc Boosted Reward |
The base reward after applying your Arc’s bonus. | FPs | Calculated |
Supporter Contribution |
The FPs a supporter needs to put in for a spot to get the desired rate. | FPs | Calculated |
Net Profit |
The FPs gained by the supporter after their contribution. | FPs | Calculated |
FPs to Secure Spot |
The total FPs that must be on the GB to secure a specific spot from the owner’s perspective. | FPs | Calculated |
C) Practical Examples (Real-World Use Cases)
Let’s walk through a couple of scenarios using the FoE Arc Calculator to understand its practical application.
Example 1: Taking a High-Value Spot on a Mid-Level GB
Imagine you want to take 1st place on a guildmate’s Zeus, which is going from Level 10 to 11. You have a Level 80 Arc.
- GB Level: 10
- Your Arc Bonus: 90%
- Total FPs Needed for Next Level: 1200 FPs
- Owner’s Current FPs: 100 FPs
- Desired 1.9 Rate: 1.9
- Base Reward 1st Place: 150 FPs
- Base Reward 2nd Place: 75 FPs
- Base Reward 3rd Place: 30 FPs
- Base Reward 4th Place: 0 FPs
- Base Reward 5th Place: 0 FPs
Calculator Output Interpretation:
- 1st Place:
- Arc Boosted Reward: 150 * (1 + 90/100) = 285 FPs
- Supporter Contribution: 285 / 1.9 = 150 FPs
- Net Profit: 285 – 150 = 135 FPs
- FPs to Secure 1st Spot (Owner’s View): Let’s say the calculator shows 1050 FPs. This means the owner needs to ensure at least 1050 FPs are on the GB before you contribute your 150 FPs to take 1st place.
- The calculator would also show similar breakdowns for 2nd and 3rd place, allowing you to compare profits and required contributions. You’d see that taking 1st place yields the highest profit.
- Owner’s FPs to Secure: If the owner has 100 FPs, and the FPs to Secure 1st is 1050, the owner still needs to put in 950 FPs (1050 – 100) to secure the GB for the 1.9 thread.
Example 2: Securing a Lower Spot on a High-Level GB
You’re looking for a quick profit on a high-level GB (e.g., an Arc going from Level 80 to 81) in your guild’s 1.9 thread. Your Arc is Level 80.
- GB Level: 80
- Your Arc Bonus: 90%
- Total FPs Needed for Next Level: 15000 FPs
- Owner’s Current FPs: 5000 FPs
- Desired 1.9 Rate: 1.9
- Base Reward 1st Place: 1000 FPs
- Base Reward 2nd Place: 500 FPs
- Base Reward 3rd Place: 200 FPs
- Base Reward 4th Place: 100 FPs
- Base Reward 5th Place: 50 FPs
Calculator Output Interpretation:
- 3rd Place:
- Arc Boosted Reward: 200 * (1 + 90/100) = 380 FPs
- Supporter Contribution: 380 / 1.9 = 200 FPs
- Net Profit: 380 – 200 = 180 FPs
- FPs to Secure 3rd Spot (Owner’s View): The calculator might show, for instance, 14000 FPs. This means the owner needs 14000 FPs on the GB before the 3rd spot is taken.
- The FoE Arc Calculator would show that even lower spots can yield substantial profits, especially on high-level GBs with large base rewards. You can quickly see if a spot is worth taking based on your available FPs and desired profit.
- Owner’s FPs to Secure: If the owner has 5000 FPs, and the FPs to Secure 1st is, for example, 13000, the owner still needs to put in 8000 FPs (13000 – 5000) to secure the GB for the 1.9 thread.
D) How to Use This FoE Arc Calculator
Our FoE Arc Calculator is designed for ease of use, helping you quickly find the optimal contributions for any Great Building.
Step-by-Step Instructions:
- Enter GB Level: Input the current level of the Great Building you are interested in. While not directly used in the FP calculation, it provides context and helps you verify base rewards.
- Enter Your Arc Bonus (%): Input the bonus percentage your Arc Great Building provides. For a Level 80 Arc, this is 90%.
- Enter Total FPs Needed for Next Level: Find this number in the GB’s contribution window in Forge of Empires. It’s the total FPs required to complete the current level.
- Enter Owner’s Current FPs: Input the amount of FPs the GB owner has already contributed to their own GB.
- Enter Desired 1.9 Rate: The default is 1.9, but you can adjust this if your guild uses a different rate (e.g., 1.92, 1.95).
- Enter Base Rewards for Each Spot: Crucially, input the base FP rewards for 1st, 2nd, 3rd, 4th, and 5th place. These can be found in the GB’s contribution window or on FoE wikis for specific GBs and levels.
- Click “Calculate Contributions”: The calculator will instantly display the results.
How to Read the Results:
- Primary Result: The highlighted result shows the optimal contribution for the 1st place spot, as this is often the most sought-after.
- Total FPs Remaining: The total FPs still needed to level up the GB, after the owner’s contribution.
- Owner’s FPs to Secure: This is the amount of FPs the GB owner still needs to contribute to ensure all spots can be taken at the desired 1.9 rate. If this number is negative, the owner has over-contributed.
- Effective Arc Bonus: Your Arc bonus expressed as a multiplier (e.g., 90% becomes 1.9x).
- Optimal Contribution Breakdown Table: This table is the heart of the FoE Arc Calculator. For each spot (1st to 5th), it shows:
- Supporter Contribution (FPs): The exact FPs you should put in for that spot to achieve your desired profit rate.
- Arc Boosted Reward (FPs): The total FPs you will receive back (base reward + Arc bonus).
- Net Profit (FPs): Your pure profit in FPs from taking that spot.
- FPs to Secure Spot (Owner’s View): The total FPs that must be on the GB *before* this spot is taken by a supporter. This helps the owner manage their GB.
- Net Profit Chart: A visual representation of the net profit for each spot, making it easy to compare potential gains.
Decision-Making Guidance:
Use the results from the FoE Arc Calculator to make informed decisions:
- For Supporters: Identify which spots offer the best net profit for your available FPs. Prioritize spots with higher profits, especially if you have a high-level Arc.
- For GB Owners: Use the “FPs to Secure Spot” column to know how many FPs you need to put in to “lock” each spot for your guild’s 1.9 thread. This prevents supporters from overpaying or underpaying and ensures a smooth leveling process.
- Compare Rates: Experiment with different “Desired 1.9 Rates” to see how it impacts contributions and profits, especially if your guild has flexible rules.
E) Key Factors That Affect FoE Arc Calculator Results
Understanding the variables that influence the FoE Arc Calculator results is crucial for effective strategy in Forge of Empires.
- Your Arc Bonus Percentage: This is the most significant factor. A higher Arc level (especially Level 80, which gives a 90% bonus) dramatically increases your Arc Boosted Rewards, leading to higher net profits for the same contribution. This is why The Arc is considered one of the most important Great Buildings in FoE.
- Total FPs Needed for Next GB Level: The overall size of the GB level determines the scale of contributions. Higher FP requirements mean larger individual contributions and rewards, making the 1.9 thread more impactful.
- Owner’s Current FPs: The FPs already contributed by the GB owner directly affect the “FPs to Secure Spot” values. If the owner has put in a lot, the remaining FPs needed to secure spots will be lower, making it easier for supporters to jump in.
- Desired 1.9 Rate: While 1.9 is standard, a slightly higher rate (e.g., 1.92 or 1.95) means supporters contribute slightly less for the same reward, increasing their profit. Conversely, a lower rate (less common) would require higher contributions. Guilds often agree on a specific rate.
- Base Rewards for Each Spot: These are fixed values for each GB at each level. Higher base rewards naturally lead to higher Arc Boosted Rewards and thus greater net profits for supporters. Different GBs have different reward structures, and rewards increase with GB level.
- Blueprint and Medal Rewards: While the FoE Arc Calculator focuses on FPs, remember that taking spots also grants blueprints and medals. These are additional, often significant, benefits that influence the overall value of a contribution, even if not directly calculated in FPs.
- Guild Rules and Community: The specific rules and culture of your guild or community can influence the “Desired 1.9 Rate” and how 1.9 threads are managed. Always adhere to your guild’s guidelines.
F) Frequently Asked Questions (FAQ) about the FoE Arc Calculator
A: The “1.9 thread” is a common strategy in FoE where players contribute Forge Points (FPs) to Great Building (GB) spots, expecting to receive 1.9 times their contribution back in FP rewards (including their original FPs), thanks to their Arc bonus. This ensures a profit for the supporter and helps the GB owner level up efficiently.
A: Your Arc Great Building provides a significant bonus to FP, blueprint, and medal rewards when you contribute to other players’ GBs. A higher Arc bonus (e.g., 90% at Level 80) means you receive substantially more FPs back for your contributions, making the 1.9 thread highly profitable.
A: You can find these values by clicking on the Great Building in question within Forge of Empires and opening its contribution window. The total FPs needed is usually displayed prominently, and the base rewards for each spot are listed below the contribution slots.
A: Yes! Simply input your current Arc’s bonus percentage into the “Your Arc Bonus (%)” field. The calculator will adjust the rewards accordingly. While a Level 80 Arc is ideal for maximum profit, any Arc bonus makes contributions more lucrative.
A: A negative value means the GB owner has already contributed more FPs than necessary to secure that spot (and all subsequent spots) at the specified 1.9 rate. This is generally good for supporters as it means the spot is “safe” to take without the owner needing to add more FPs.
A: A higher rate (e.g., 1.92) means supporters contribute slightly fewer FPs for the same Arc-boosted reward, thus increasing their net profit. Some guilds adopt these higher rates to be more generous to their members or to incentivize faster GB leveling. Always check your guild’s specific rules.
A: This specific FoE Arc Calculator focuses on optimizing Forge Point (FP) profit, as FPs are the primary currency for leveling GBs. While blueprint and medal rewards are also boosted by The Arc, they are not directly factored into the FP profit calculation here. They are considered an additional bonus.
A: This calculator assumes you are taking a spot from scratch or that the owner has secured it up to a certain point. If a spot is partially filled by another player, you would need to calculate your contribution based on the *remaining* FPs for that spot, which this calculator doesn’t directly handle for intermediate contributions. It’s best used for fresh spots in a 1.9 thread.