1.9 Calculator Foe

The essential tool for Forge of Empires players to calculate Great Building security and donations.

Spot	Base Reward	1.9 Rate	Points to Secure

What is a 1.9 Calculator FoE?

A 1.9 calculator foe is a specialized utility designed for players of Forge of Empires who participate in “1.9 leveling threads.” In the game, the Arc Great Building provides a contribution bonus of up to 90% (a 1.9x multiplier) to rewards earned from contributing to other players’ Great Buildings. The 1.9 calculator foe helps owners determine exactly how many Forge Points (FPs) they must invest into their own building to ensure that a contributor can safely take a position without being “sniped” or outbid by another player.

Using a 1.9 calculator foe is standard practice in high-level guilds to ensure fair play, rapid leveling, and maximum efficiency of Forge Point resources. It eliminates the guesswork and manual math involved in protecting your P1 through P5 spots.

1.9 Calculator FoE Formula and Mathematical Explanation

The math behind the 1.9 calculator foe revolves around two main concepts: the 1.9 donation value and the “security threshold.”

1. The 1.9 Donation Value:
This is simply the base reward of a spot multiplied by 1.9. In FoE, rewards are always rounded up to the nearest whole number.

2. The Security Formula:
A spot is “secure” when the remaining Forge Points needed to finish the level are less than or equal to twice the donation amount. The owner must invest enough so that even if another player contributes, they cannot overtake the person paying the 1.9 rate.

Variable	Meaning	Unit	Typical Range
T	Total Level Cost	FP	50 – 15,000+
B	Base Reward	FP	5 – 3,000+
D	1.9 Donation (B × 1.9)	FP	9 – 5,700+
S	Security Requirement (T – 2D)	FP	Varies

Practical Examples (Real-World Use Cases)

Example 1: Statue of Zeus (Level 10)

Suppose your Statue of Zeus requires 510 FPs to level. The P1 base reward is 40 FPs.
Using the 1.9 calculator foe:
– 1.9 Donation: 40 × 1.9 = 76 FPs.
– Security needed: 510 – (76 × 2) = 510 – 152 = 358 FPs.
The owner must put in 358 FPs before asking for a 76 FP donation to guarantee the spot.

Example 2: The Arc (Level 60)

An Arc level requires 3244 FPs. P1 base is 655 FPs.
– 1.9 Donation: 655 × 1.9 = 1245 FPs.
– Security needed: 3244 – (1245 × 2) = 3244 – 2490 = 754 FPs.
After the owner puts in 754 FPs, the first position is ready to be taken in a 1.9 thread.

How to Use This 1.9 Calculator FoE

1. Enter the Total Forge Points Needed for your Great Building’s current level.
2. Input your Current Owner Investment if you have already added FPs.
3. Look up the Base Reward for the position (P1-P5) from the building’s reward list in-game.
4. The 1.9 calculator foe will automatically update the “Points to Secure” value.
5. Use the table to see how many FPs are needed for subsequent spots like P2 and P3.
6. Click Copy Results to quickly paste the values into your guild’s 1.9 thread.

Key Factors That Affect 1.9 Calculator FoE Results

• Arc Level of Contributors: The 1.9 standard assumes contributors have a Level 80 Arc. If they have a higher Arc, they might offer a “1.92” or “1.94” rate, which our 1.9 calculator foe can adapt to by adjusting base inputs.
• Building Type: High-reward buildings like The Arc or Alcatraz require much lower owner investment compared to buildings with low base rewards like the Lotus Temple.
• Sniper Risk: If you do not use a 1.9 calculator foe to secure spots, “snipers” (uninvited players) may contribute less than the 1.9 rate but enough to take a spot, costing you FPs.
• Guild Social Rules: Some guilds require owners to secure all five spots before posting, while others allow “prime-as-you-go” strategies.
• Inventory Reserves: You must have enough “loose” FPs or bank packs to reach the security threshold before you can benefit from the 1.9 system.
• Rounding Math: FoE always rounds UP for rewards. Our 1.9 calculator foe uses Math.ceil() to ensure mathematical accuracy with game mechanics.

Frequently Asked Questions (FAQ)

What does “1.9” actually mean in FoE?

It refers to the 90% bonus a Level 80 Arc provides. 1.0 (base) + 0.9 (bonus) = 1.9 multiplier.

Is the 1.9 calculator foe accurate for all buildings?

Yes, as long as you input the correct base reward found in the game’s Great Building interface.

Can I use this for P2 or P3 spots?

Absolutely. Just change the “Base Reward” input to match the P2 or P3 base amount shown in-game.

Why is the owner’s investment so high on some buildings?

Low-level buildings or those with poor reward-to-cost ratios require more “priming” from the owner.

What is “sniping” in the context of 1.9 threads?

Sniping occurs when someone puts in fewer FPs than the 1.9 rate but secures a spot because the owner didn’t invest enough to protect it.

Do I need a Level 80 Arc to use a 1.9 calculator foe?

The owner doesn’t need it, but the contributors usually do. The owner just needs the calculator to know how to secure their building.

Does the calculator handle rounding?

Yes, our 1.9 calculator foe rounds every contribution up to ensure it matches the game’s reward logic.

What if my guild uses a 1.92 thread?

You can multiply the base reward by 1.92 manually and enter that value to get approximate security results.