gb calculator forge of empires
Your expert tool for optimizing Great Building Forge Point investments.
Great Building Investment Calculator
Only ‘The Arc’ is supported in this demo. Data is for levels 10-20.
Enter the level you are trying to complete (e.g., for 10 -> 11, enter 11).
The standard bonus for a Level 80 Arc is 90% (1.9 rate).
FPs you have already added to the level.
Owner’s Cost to Secure All Spots
Investment Breakdown
Reward Spot Contributions
| Position | Required FP (at 1.9x) | Base Reward | Blueprints | Investor Profit |
|---|
Cost Distribution Chart
What is a GB Calculator Forge of Empires?
A gb calculator forge of empires is an indispensable tool for any serious Forge of Empires player. It is a specialized calculator designed to optimize the process of leveling up Great Buildings (GBs). Great Buildings provide some of the most powerful bonuses in the game, but upgrading them requires a significant investment of Forge Points (FPs). This tool helps players determine the most cost-effective way to level their GBs by calculating the owner’s required contribution after accounting for rewards given to other players who help. Using a gb calculator forge of empires ensures you don’t overspend and can level your buildings faster.
This calculator is primarily for players who participate in “1.9 threads” or similar contribution groups, where players with a high-level Arc (typically level 80, providing a 90% bonus on rewards) contribute to each other’s GBs. The gb calculator forge of empires helps the GB owner figure out exactly how many FPs they need to add to “secure” the top reward spots, so investors can safely add their share without risk of being “sniped” by another player.
GB Calculator Forge of Empires Formula and Mathematical Explanation
The core logic of a gb calculator forge of empires revolves around a few key calculations. The goal is to find the minimum Forge Points the owner must invest to make the remaining reward spots safe for investors.
The fundamental formula for an investor’s contribution is:
Investor's Contribution = Base Reward * (1 + Arc Bonus Percentage)
For a standard 1.9 thread (90% bonus), this is Base Reward * 1.9. The calculator’s main job is to determine how many FPs the owner needs to add so that the amount remaining to level is exactly equal to the sum of the secured investors’ contributions. The amount an owner must add to “secure” a spot is calculated by ensuring no other player can contribute fewer points and take that spot. A spot is secure when:
Owner's Contribution + Investor Contributions >= Total FPs for Level
The gb calculator forge of empires automates this complex process, showing the owner the exact amount to deposit.
| Variable | Meaning | Unit | Typical Range |
|---|---|---|---|
| Total FP Cost | The total number of Forge Points needed to complete a level. | Forge Points | 50 – 10,000+ |
| Base Reward | The FP reward for a specific position (1-5) before any Arc bonus. | Forge Points | 5 – 1,000+ |
| Arc Bonus | The percentage bonus an investor receives from their Arc GB. | Percentage (%) | 0% – 91% (and higher) |
| Owner’s Cost | The net FPs the owner must invest after all investor contributions. | Forge Points | Varies widely |
Practical Examples (Real-World Use Cases)
Example 1: Leveling a mid-level Arc
Imagine you are leveling your Arc from level 10 to 11. The total cost is 480 FPs. You are using a 1.9 contribution thread.
- Inputs: Target Level 11, Arc Bonus 90%.
- Calculation: The gb calculator forge of empires looks up the rewards for level 11 (e.g., P1=100, P2=50, P3=20, P4=10, P5=5 FPs). It calculates the 1.9x contributions: P1 needs 190 FP, P2 needs 95 FP, and so on.
- Output: The calculator sums the investor contributions (190+95+38+19+9.5, rounded) and subtracts this from the total cost of 480. It will show you the exact amount of FPs you, the owner, need to deposit to make all spots secure, which might be around 129 FPs.
Example 2: High-Level Observatory
Now consider leveling a high-level Observatory. The costs and rewards are much higher. A powerful gb calculator forge of empires is essential here. If a level costs 5,000 FPs and the top reward is 800 FPs, the top investor will contribute 800 * 1.9 = 1520 FPs. The calculator will sum up all five investor spots and tell you that you must contribute, for instance, 1,200 FPs yourself to cover the difference and secure the level for your partners. Without the calculator, this would be a difficult and error-prone manual task.
How to Use This GB Calculator Forge of Empires
Using this gb calculator forge of empires is straightforward. Follow these steps for an accurate calculation:
- Select Great Building: Choose the GB you are leveling from the dropdown. (Note: This demo only includes data for ‘The Arc’).
- Enter Target Level: Input the level you are working to *complete*. For example, if your GB is currently level 15 and you want to finish it, you enter 16.
- Set Arc Bonus: Enter the bonus percentage of the investors you are working with. For standard 1.9 threads, this is 90.
- Add Owner’s Contribution: If you have already put some FPs on the level, enter that amount here. This will be subtracted from your final required cost.
- Click Calculate: The tool will instantly update all result fields, showing your required investment, the cost for each reward spot, and a full breakdown.
Read the results to know exactly how many FPs you need to add. The “Copy Results” button is useful for sharing the required amounts for each spot in your guild or group chat.
Key Factors That Affect GB Investment Results
Several factors can influence the cost and strategy of leveling your Great Buildings. An effective gb calculator forge of empires helps you navigate them.
- The Arc Bonus Level: This is the single most important factor. The higher the investor’s Arc bonus, the more they contribute, and the lower your net cost as the owner. Working with players in a 1.9 or higher thread is the key to cheap leveling.
- Sniping: This refers to a player contributing just enough to take a reward spot from an intended investor, often for a profit. A good gb calculator forge of empires helps prevent this by calculating the “secure” cost, which makes sniping unprofitable.
- Leveling Strategy (Group vs. Solo): Leveling in a dedicated contribution group (like a 1.9 thread) is far cheaper than self-leveling. The calculator is designed specifically for this group strategy.
- GB Choice: Not all GBs are created equal. Some, like The Arc itself, have very high reward-to-cost ratios, making them popular in contribution threads. This gb calculator forge of empires can be adapted for any GB.
- Owner’s Pre-contribution: Adding some of your own FPs before opening the GB to investors can help secure it faster. The calculator accounts for any FPs you’ve already added.
- Blueprint Availability: To level a GB, you need a full set of 9 blueprints. While not a direct input to the gb calculator forge of empires, your ability to acquire BPs dictates which GBs you can level in the first place.
Frequently Asked Questions (FAQ)
What does “securing” a spot mean?
Securing a spot means the owner has contributed enough Forge Points so that the remaining amount needed to level the GB is less than or equal to the sum of the contributions from the remaining reward spots. This prevents a “sniper” from being able to steal a spot for a profit. This gb calculator forge of empires is built to calculate this secure amount.
Why do people use “1.9” threads?
A “1.9 thread” refers to a group of players, all with a Level 80 Arc (or higher), who have a 90% bonus on GB rewards. When they contribute to a GB, they pay 1.9 times the base reward and get that exact amount back (plus blueprints and medals), making the contribution free for them. This system is the most efficient way to level GBs in Forge of Empires.
Can I use this calculator for any GB?
Yes, the logic of a gb calculator forge of empires applies to any Great Building in the game. However, the calculator needs the specific cost and reward data for each level of each GB. This demo version is limited to a few levels of The Arc, but a full version would include all of them.
What is “sniping”?
Sniping is when a player who is not part of your agreed-upon contribution group adds FPs to your GB to steal a reward spot from someone else. They do this when a spot is “unsecured” and they can make a profit. Using this gb calculator forge of empires correctly prevents sniping.
What if an investor has a different Arc bonus?
While most threads are standardized (e.g., 1.9), some advanced calculators allow you to set a different bonus for each reward spot. For simplicity, this gb calculator forge of empires assumes all investors have the same bonus level.
Is the owner’s cost always positive?
Usually, yes. However, for some very high-level Great Buildings with extremely high rewards, and with very high Arc bonuses (e.g., above level 100 Arcs), it is sometimes possible for the sum of investor contributions to exceed the total cost of the level. In these rare cases, the owner’s cost can be zero or even negative (a profit). The gb calculator forge of empires will show this.
How do I know the total FP cost for a level?
This data is well-documented by the Forge of Empires community. A good gb calculator forge of empires has this data built into its code, so you only need to select the GB and level, and the tool handles the rest.
Why is the chart useful?
The chart provides a quick visual reference for the cost distribution. It helps you see at a glance how much of the total level cost is being covered by your investors versus how much you have to pay out of your own pocket. It’s a great way to understand the power of cooperative leveling.