Arc 1.9 Calculator for Forge of Empires
The ultimate tool to calculate the owner’s cost for securing Great Building spots using the 1.9 method. Optimize your Forge Point (FP) spending and level your GBs faster.
Arc 1.9 Investment Calculator
Reward Places (P1-P5)
Enter the base FP reward for each of the top 5 contributor spots.
Detailed Breakdown
| Place | Base Reward (FP) | Investor Cost (1.9x) | FP to Secure Spot | Investor Profit (at 90% Arc Bonus) |
|---|
The “FP to Secure Spot” is the amount the owner must ensure is on the building to prevent that spot from being sniped before a 1.9 investor can claim it.
Cost Distribution Chart
This chart visualizes the breakdown of total Forge Points between the owner and the 1.9 investors. A lower owner’s share is more efficient.
What is the Arc 1.9 Method?
The “Arc 1.9 Method” is a community-driven strategy in Forge of Empires designed to help players level their Great Buildings (GBs) efficiently. It revolves around “The Arc,” a specific Great Building that provides a bonus on rewards earned from contributing to other players’ GBs. When The Arc reaches level 80, it gives a 90% bonus on Forge Point (FP) rewards. The ‘1.9’ refers to the multiplier (100% base reward + 90% bonus = 190% or 1.9). An investor with a level 80 Arc can contribute 1.9 times the base reward to a GB and get their exact investment back in FPs when the level is complete. This makes it a risk-free investment for them and a massive cost-saving for the GB owner. The arc 1.9 calculator is an essential tool for any player participating in this system.
This method is most common in guilds that organize “1.9 threads,” where members post their GBs that are ready for investment. The core challenge for the GB owner is ensuring that these investment spots are “secure,” meaning an outside player (a “sniper”) cannot steal the spot from the intended guildmate. This is where a reliable arc 1.9 calculator becomes indispensable, as it calculates the exact amount of FPs the owner must contribute to lock the positions.
The Arc 1.9 Formula and Mathematical Explanation
The mathematics behind the arc 1.9 calculator is straightforward but requires precision. The primary goal is to calculate the owner’s required contribution to secure the top five reward spots (P1-P5).
The core formulas are:
- Investor’s Contribution: This is the amount an investor with a level 80+ Arc pays for a spot.
Investor Cost = round(Base Reward * 1.9) - Owner’s Securing Cost: This is the total amount the owner needs to put on the building to ensure all spots are filled by 1.9 investors without risk of being sniped.
Owner's Cost = Total Level Cost - Current FP on Building - SUM(All Investor Costs)
If the calculated Owner’s Cost is negative, it means the total contributions from investors exceed the level’s cost, so the owner pays nothing (a “profitable” level). This is common on higher-level Great Buildings. Our foe gb investment calculator handles these calculations automatically.
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Total Level Cost | The total Forge Points required to complete the GB level. | Forge Points (FP) | 100 – 10,000+ |
| Base Reward | The standard FP reward for a contribution spot (P1-P5). | Forge Points (FP) | 5 – 2,000+ |
| Investor Cost | The amount paid by a 1.9 investor (Base Reward * 1.9). | Forge Points (FP) | 10 – 3,800+ |
| Owner’s Cost | The FPs the GB owner must contribute to secure the spots. | Forge Points (FP) | 0 – 5,000+ |
Practical Examples (Real-World Use Cases)
Example 1: Mid-Level Observatory
A player is leveling their Observatory from 29 to 30. The total cost is 890 FP. The rewards are P1=145, P2=75, P3=25, P4=5, P5=0.
- P1 Investor Cost: 145 * 1.9 = 276 FP
- P2 Investor Cost: 75 * 1.9 = 143 FP
- P3 Investor Cost: 25 * 1.9 = 48 FP
- P4 Investor Cost: 5 * 1.9 = 10 FP
- P5 Investor Cost: 0 * 1.9 = 0 FP
- Total Investor Contributions: 276 + 143 + 48 + 10 + 0 = 477 FP
- Owner’s Securing Cost: 890 – 477 = 413 FP
By using the arc 1.9 calculator, the owner knows they must contribute 413 FP to make the level safe for investors, saving them almost 50% of the cost.
Example 2: High-Level Arc
A player is leveling their own Arc from 79 to 80. The total cost is 1,726 FP. The rewards are P1=415, P2=210, P3=70, P4=25, P5=5.
- P1 Investor Cost: 415 * 1.9 = 789 FP
- P2 Investor Cost: 210 * 1.9 = 399 FP
- P3 Investor Cost: 70 * 1.9 = 133 FP
- P4 Investor Cost: 25 * 1.9 = 48 FP
- P5 Investor Cost: 5 * 1.9 = 10 FP
- Total Investor Contributions: 789 + 399 + 133 + 48 + 10 = 1,379 FP
- Owner’s Securing Cost: 1,726 – 1,379 = 347 FP
This demonstrates the power of the system. To level the most important Great Building in the game for this strategy, the owner only pays 347 FP out of a 1,726 FP total cost. This is why a precise great building calculator is crucial.
How to Use This Arc 1.9 Calculator
Using our foe secure spot calculator is simple and intuitive. Follow these steps for an accurate calculation:
- Enter Total FP Cost: Input the total number of Forge Points required to finish the level of your Great Building. You can find this by opening the GB’s level-up screen in the game.
- Enter Current FP: Add the number of FPs already on the building. If you’re starting from zero, leave this at 0.
- Input Reward Places: For each spot from P1 to P5, enter the base FP reward shown in the game. Do not enter the 1.9 value; the calculator does this for you.
- Review the Results: The calculator instantly updates. The primary result, “Owner’s Cost to Secure P1-P5,” is the amount you need to add to the building before asking for investors.
- Analyze the Breakdown: Use the detailed table and chart to see exactly what each investor will pay and how the costs are distributed. This helps in understanding the efficiency of leveling this specific GB.
Key Factors That Affect Arc 1.9 Results
- GB Level and Type: Different Great Buildings have different costs and reward structures. Buildings with high rewards for P1-P5 are more “profitable” to level with the 1.9 method.
- Investor’s Arc Level: The entire system is based on a 1.9 multiplier, assuming a level 80 Arc. If your guild uses a different rate (e.g., 1.92), the calculations would need to be adjusted.
- Sniping Risk: The primary reason to use an arc 1.9 calculator is to mitigate sniping. If you don’t contribute enough to secure the spots, a non-1.9 player can jump in and take the reward, causing chaos for your investors.
- Guild Participation: A successful 1.9 strategy requires an active guild or group of friends willing to invest. Without reliable investors, the system doesn’t work.
- Owner’s Contribution: Your goal is to minimize your own FP contribution. A good fp calculator shows you the exact minimum you need to spend.
- Timing and Speed: Once you secure the spots and post them, investors expect to be able to place their FPs quickly. Delays can tie up their FPs and slow down the entire group’s progress.
Frequently Asked Questions (FAQ)
What does it mean to “secure” a spot?
Securing a spot means the GB owner contributes enough Forge Points so that it becomes impossible for an outside player (a sniper) to overtake the intended 1.9 investor for that reward position. The arc 1.9 calculator determines this exact FP amount.
Why is a level 80 Arc the standard?
A level 80 Arc gives a 90% bonus on rewards. This creates the simple 1.9 multiplier (100% + 90% = 190%), allowing investors to break even on their FP investment. It’s a clean, round number that has become the community standard.
Can I use this for rates other than 1.9?
This specific calculator is hardcoded for the 1.9 rate. However, the underlying formula is adaptable. For a different rate, you would simply change the multiplier (e.g., use 1.92 for a 92% bonus).
What happens if I don’t contribute enough to secure the spots?
If a spot is not secure, another player can add a small number of FPs and “snipe” the reward spot. This means your intended 1.9 investor loses their spot, will likely retract their contribution, and the trust within your investment group is damaged.
Is it ever profitable for the owner?
Yes. On many high-level Great Buildings, the sum of the 1.9 investor contributions is greater than the total cost to level. In these cases, the owner contributes 0 FP and may even receive surplus FPs. Our great building calculator will show a result of 0 or a negative number in this scenario.
Why is the arc 1.9 calculator so important?
Accuracy is critical. A miscalculation can lead to sniped spots, lost Forge Points, and frustrated guildmates. A reliable arc 1.9 calculator removes human error and ensures a smooth and efficient leveling process for everyone involved.
What is a “sniper” in Forge of Empires?
A sniper is a player who contributes to a Great Building at the last moment to steal a higher reward spot from someone who has invested more FPs over time. Using an arc 1.9 calculator to secure spots is the best defense against snipers.
How does this calculator compare to a generic FP calculator?
A generic fp calculator might only track total costs. Our specialized arc 1.9 calculator understands the complex dynamics between the owner and multiple investors, providing the specific “cost-to-secure” number that is essential for the 1.9 method to work safely.
Related Tools and Internal Resources
For more advanced strategies and calculations, check out these other resources:
- Forge of Empires Calculator: A comprehensive tool for various in-game calculations.
- FOE Tools GB Investment: An alternative and widely respected foe gb investment tool.
- Great Building Leveling Guide: A guide to prioritizing which Great Buildings to level first for maximum benefit.
- Arc Bonus Calculator: A tool to see the rewards for every level of The Arc.
- FP Investment Strategies: Learn about other methods besides the 1.9 system for investing your Forge Points.
- Secure Spot Calculator Deep Dive: A more technical article on the mathematics behind securing spots.