Foe 1.9 Calculator

Forge of Empires Great Building Investment & Secure Tool

Base Rewards (Position 1 – 5)

Enter the base reward listed for each spot without any Arc bonus.

What is the FoE 1.9 Calculator?

The foe 1.9 calculator is an essential tool for dedicated players of Forge of Empires. It allows players to calculate exactly how many Forge Points (FP) are required to take a position on a Great Building (GB) when using a “1.9 leveling thread.” In these threads, players with a Level 80 Arc (which provides a 90% bonus to rewards) donate to each other’s buildings without making a profit, effectively “leveling” the building at 1.9 times the base reward value.

Who should use it? Any player participating in a guild or global 1.9 thread. Common misconceptions include thinking that the owner loses FPs; in reality, using a foe 1.9 calculator helps the owner save thousands of Forge Points by utilizing the Arc bonuses of other players.

FoE 1.9 Calculator Formula and Mathematical Explanation

The math behind the foe 1.9 calculator is straightforward but critical for securing spots. The core calculation for a donor’s contribution is:

Investment = Base Reward × 1.9

The “Secure” calculation (the amount the owner must put in so a spot cannot be “sniped” or overtaken) is more complex:

Owner Secure Amount = (Total Level FP – (2 × 1.9 Investment)) – Current Owner Contribution

Variables Table

Variable	Meaning	Unit	Typical Range
Base Reward	FP listed in the GB info for a position	FP	5 – 2,500
Multiplier	The Arc bonus factor (usually 1.9)	Ratio	1.0 – 1.95
Total Level FP	Total points to complete the level	FP	100 – 15,000
Security Gap	Points left before a spot is locked	FP	Variable

Practical Examples (Real-World Use Cases)

Example 1: The Statue of Zeus Level 10

Suppose you are leveling a Zeus. The total FP needed is 510. The P1 base reward is 40 FP. Using the foe 1.9 calculator:

• 1.9 Investment for P1: 40 × 1.9 = 76 FP.
• To secure P1: (510 – (2 × 76)) – 0 = 358 FP.
• Conclusion: The owner must put in 358 FP before P1 can safely post 76 FP in a thread.

Example 2: The Arc Level 60

A high-level Arc requires 3,000 FP. P1 base reward is 600 FP.

• 1.9 Investment for P1: 600 × 1.9 = 1,140 FP.
• To secure P1: (3000 – (2 × 1140)) – 0 = 720 FP.
• Interpretation: By using a foe 1.9 calculator, the owner realizes they only need to contribute 720 FP themselves, while donors cover the rest.

How to Use This FoE 1.9 Calculator

1. Enter the “Total Forge Points” required for the Great Building level.
2. Input your “Current Owner Contribution” (how much you’ve already spent).
3. Check the “Base Rewards” for positions 1 through 5 from your Great Building screen.
4. The foe 1.9 calculator will instantly show the 1.9 payment for each spot.
5. Review the “Owner Must Invest” column to see if you need to add more FPs to secure the position.
6. Use the “Copy” button to generate a snippet to paste into your guild’s 1.9 thread.

Key Factors That Affect FoE 1.9 Calculator Results

• Arc Level: While 1.9 is standard, players with Arcs above level 80 may offer 1.92 or 1.94, which changes the foe 1.9 calculator output.
• Sniping Risks: If you don’t use the foe 1.9 calculator to check the “Secure” amount, neighbors can put in fewer FPs and take the rewards.
• Building Type: High-reward buildings like The Arc or Alcatraz require much higher owner contributions initially.
• Level Range: In the “sweet spot” (levels 30-60), buildings often become “self-securing” or very cheap for the owner.
• FP Bank: Your current Forge Point inventory determines how many levels you can push at once using the foe 1.9 calculator logic.
• Guild Rules: Some guilds require 1.9 exactly, while others allow for profit or require higher rates for certain members.

Frequently Asked Questions (FAQ)

Why is it called a 1.9 thread?
It refers to the 1.9x multiplier (90% bonus) provided by a Level 80 Arc. The foe 1.9 calculator automates this specific math.

Is 1.9 always the best rate?
For owners, higher is better (e.g., 1.92). For donors, a lower rate would yield profit, but 1.9 is the community standard for mutual growth.

What happens if I don’t secure a spot?
A “sniper” (neighbor) can invest more than the 1.9 amount but less than the total remaining, locking themselves into P1 and costing you rewards.

Can I use this for lower Arc bonuses?
Yes, simply change the multiplier in the foe 1.9 calculator to 1.8 or 1.85 as needed.

Does the calculator include leveling rewards like Blueprints?
The foe 1.9 calculator focuses on FP costs. Medals and Blueprints are always included in the game’s reward but don’t change the FP math.

What is a “Self-Securing” level?
This is when the 1.9 investment for P1 is so high that the owner doesn’t need to put in any FPs to make it safe.

Do I need an Arc to use the 1.9 thread?
To *receive* 1.9 investments, no. To *give* them without losing FPs, you need a Level 80 Arc.

Is there a limit to GB levels?
No, Great Buildings can level indefinitely, though the FP costs increase significantly, making a foe 1.9 calculator even more vital.

Related Tools and Internal Resources

• Forge of Empires GB Investment Guide: Deep dive into which buildings to prioritize.
• Arc Bonus Calculator: Calculate your exact bonus percentage based on your Arc level.
• FoE Leveling Guide: Best practices for leveling Great Buildings efficiently.
• Great Building Rewards Table: See all base rewards for every building.
• FP Investment Strategy: How to manage your Forge Point bank effectively.
• FoE Profit Calculator: Find sniping opportunities in your neighborhood.