Forge of Empires 1.9 Calculator
Calculate Great Building investor contributions and owner costs for the 1.9 method.
1.9 Investment Calculator
The total Forge Points required to complete the current GB level.
Reward Spot Inputs
FP reward for 1st place.
FP reward for 2nd place.
FP reward for 3rd place.
FP reward for 4th place.
FP reward for 5th place.
What is the Forge of Empires 1.9 Calculator?
The forge of empires 1.9 calculator is a specialized tool used by players of the popular strategy game Forge of Empires. Its primary purpose is to simplify the process of leveling Great Buildings (GBs) through a cooperative investment method known as the “1.9 Thread.” In this system, players with a high-level Arc Great Building (which provides a bonus to GB rewards) contribute Forge Points (FPs) to another player’s GB. They contribute 1.9 times the standard FP reward for a given prize spot (P1-P5).
This method is mutually beneficial: the investor gets their FPs back plus blueprints and medals, and the GB owner gets their building leveled at a significantly reduced personal cost. This calculator automates the math, showing the owner exactly how many FPs they need to contribute after all the 1.9 investors have filled the reward spots. Using a forge of empires 1.9 calculator is essential for efficient and rapid GB development.
The 1.9 Calculator Formula and Explanation
The logic behind the calculator is straightforward. It computes the required contribution from each investor and subtracts the total from the GB level’s total cost. The game rounds contributions, so our calculator does too.
Formulas Used:
Investor Contribution = round(Spot Reward × 1.9)
Total Investor FPs = Sum of all Investor Contributions (P1 to P5)
Owner’s Final Cost = Total FP for Level – Total Investor FPs
Variables Table
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Total FP for Level | The full Forge Point cost to advance the Great Building by one level. | Forge Points (FP) | 50 – 20,000+ |
| Spot Reward | The number of Forge Points awarded for securing a specific rank (P1-P5). | Forge Points (FP) | 0 – 2,000+ |
| Investor Contribution | The calculated amount an investor needs to add for a spot in a 1.9 thread. | Forge Points (FP) | 0 – 3,800+ |
| Owner’s Final Cost | The remaining FPs the GB owner must add after all investor spots are taken. | Forge Points (FP) | Negative to Positive |
Practical Examples
Let’s see the forge of empires 1.9 calculator in action with two common scenarios.
Example 1: Leveling a mid-level Great Building
Imagine you are leveling an Observatory from level 9 to 10.
- Inputs:
- Total FP for Level: 970
- P1 Reward: 110 FP
- P2 Reward: 55 FP
- P3 Reward: 20 FP
- P4 Reward: 5 FP
- P5 Reward: 0 FP
- Results:
- P1 Contribution: round(110 * 1.9) = 209 FP
- P2 Contribution: round(55 * 1.9) = 105 FP
- P3 Contribution: round(20 * 1.9) = 38 FP
- P4 Contribution: round(5 * 1.9) = 10 FP
- P5 Contribution: round(0 * 1.9) = 0 FP
- Total Investor FPs: 209 + 105 + 38 + 10 + 0 = 362 FP
- Owner’s Final Cost: 970 – 362 = 608 FP
Example 2: Leveling a high-level Arc from 80 to 81
Leveling a high-level Arc is a common goal, and a FoE Arc bonus calculator is often used in tandem with this one.
- Inputs:
- Total FP for Level: 7,910
- P1 Reward: 1,424 FP
- P2 Reward: 712 FP
- P3 Reward: 237 FP
- P4 Reward: 79 FP
- P5 Reward: 26 FP
- Results:
- P1 Contribution: round(1424 * 1.9) = 2706 FP
- P2 Contribution: round(712 * 1.9) = 1353 FP
- P3 Contribution: round(237 * 1.9) = 450 FP
- P4 Contribution: round(79 * 1.9) = 150 FP
- P5 Contribution: round(26 * 1.9) = 49 FP
- Total Investor FPs: 2706 + 1353 + 450 + 150 + 49 = 4708 FP
- Owner’s Final Cost: 7,910 – 4708 = 3,202 FP
How to Use This Forge of Empires 1.9 Calculator
Using the calculator is simple and designed to be intuitive. Follow these steps for an accurate calculation.
- Find Your GB Data: In the game, click on your Great Building. Note the “Total FPs to level” for the *next* level. Then, view the rewards for places 1 through 5 for that same upcoming level.
- Enter Total FP Cost: Input the “Total FPs to level” into the “Total FP for Level” field in the calculator.
- Enter Spot Rewards: Enter the FP rewards for each of the five spots (P1 to P5) into their corresponding fields. If a spot gives no FP reward, enter 0.
- Review the Results: The calculator will instantly update. The “Owner’s Final Cost” is the primary result, showing what you’ll need to contribute. The table below shows what each investor will pay.
- Copy and Share: Use the “Copy Results” button to easily share the investor costs in your guild’s 1.9 thread.
Key Factors That Affect 1.9 Calculations
Several factors can influence the outcome and effectiveness of using a forge of empires 1.9 calculator.
- The Arc Bonus: The entire 1.9 system hinges on investors having a high-level Arc (level 80+) to provide a 90% bonus on rewards. This is what makes the investment break-even or profitable for them.
- Accurate Data Entry: The calculator is only as accurate as the numbers you put in. Double-check the total cost and reward values from the game.
- “Snipers”: These are players who contribute to a GB outside of the 1.9 agreement, often taking a reward spot for less than the 1.9 value. Owners must often “secure” spots by adding FPs themselves before listing them. Check out a Forge of Empires sniping calculator for more on this.
- Rounding: The game always rounds contributions. Our calculator mimics this behavior for accuracy.
- Negative Owner Cost: On very high Arc levels or with certain GBs, the total investor contributions can exceed the level cost. This results in a “negative cost,” meaning the owner actually makes a Forge Point profit from leveling.
- GB Level: As a Great Building’s level increases, its costs and rewards both scale dramatically, making the 1.9 method and this calculator increasingly valuable.
Frequently Asked Questions (FAQ)
It refers to multiplying the standard FP reward for a spot by 1.9. This is the amount an investor contributes. The number comes from the 90% reward bonus provided by a level 80 Arc (100% base reward + 90% bonus = 190% or 1.9).
A negative cost occurs when the sum of all 1.9 investor contributions is greater than the total FP cost of the level. This happens on some very high-level Great Buildings, and the owner earns a profit.
If the investor has a level 80 Arc, they get back exactly the FPs they put in (1.9x the reward), plus they receive all the medals and blueprints for that spot. So, yes, it’s highly profitable in terms of BPs and medals.
A sniper is a player who takes a reward spot on a GB by contributing just enough to pass the current leader, without following the 1.9 agreement. This can disrupt the process and is why owners often need to secure spots first.
Yes. The forge of empires 1.9 calculator works for any Great Building in the game, as long as you input the correct total cost and reward values for the specific level. For more details on specific buildings, see our FoE Great Building guides.
If you enter an incorrect value, the “Owner’s Final Cost” will be wrong. This could lead to you overpaying or not having enough FPs to complete the level after investors have contributed.
Open your Great Building, and on the level-up screen, you can see the rewards for each of the top 5 places for the *next* level. These are the numbers you need for the calculator.
No. The entire purpose of this tool is to do all the math for you. Simply input the values from the game and the calculator handles the rest.