Estimate Arc rewards, owner costs, secure spots, and profit gaps. Build smarter Great Building plans with clear Forge Point projections.
| GB | Level Cost | Arc Rate | P1 Base | P2 Base |
|---|---|---|---|---|
| The Arc | 1500 | 1.90 | 250 | 125 |
| Himeji Castle | 2200 | 1.92 | 330 | 165 |
| Alcatraz | 1800 | 1.85 | 280 | 140 |
Arc Reward: Base Reward × Arc Multiplier
Secure FP: (Level Cost − Current Progress − Previous Supporter FP) ÷ 2
Profit: Arc Reward − Secure FP
Owner Remaining FP: Level Cost − Current Progress − Owner FP − Supporter FP
Enter the Great Building name first. Add the total Forge Point cost for the target level. Enter current progress and owner investment. Add your Arc multiplier, such as 1.9 or 1.92. Then enter base rewards for the first five places. Press calculate. Review secure FP, Arc reward, profit, and owner remaining cost.
This FOE GB calculator helps players plan Great Building contributions. It estimates Forge Point rewards, secure-place values, Arc boosted payouts, and possible profit or loss. The tool is useful for owners and supporters. It gives a quick view of each reward place. It also shows how much the owner may still need to add.
The Arc multiplier changes the value of each reward place. A 1.9 thread means the supporter normally receives 190 percent of the base reward. Higher rates can improve supporter returns. Lower rates may reduce profit. This calculator lets you test any custom rate.
A secure spot protects a contributor from being overtaken. The secure value depends on the level cost, current progress, and earlier supporter deposits. The calculator uses a practical half-gap method. This gives a planning estimate. Always compare final values with the live game before posting.
Owners need to know how many Forge Points remain after supporters fill places. This page separates owner investment, supporter investment, and remaining cost. That makes leveling easier to manage. It also helps guild members prepare clean contribution posts.
Profit is the difference between Arc reward and secure Forge Points. A positive value shows a possible gain. A negative value shows a possible loss. This helps supporters decide which place is worth taking.
Use the graph to compare place values fast. Download the CSV for spreadsheets. Download the PDF for sharing or records. Test different Arc rates and rewards before making a final plan.
It is a planning tool for Forge of Empires Great Buildings. It estimates rewards, secure spots, owner costs, and supporter profit.
Arc multiplier shows boosted reward value. A 1.9 rate means the base reward is multiplied by 1.9.
Yes. Enter any base reward for P1 to P5. The calculator then applies your selected Arc rate.
Secure FP is the estimated amount needed to hold a reward place without being passed by another contributor.
No. Use it for planning. Always confirm live values inside the game before locking or posting spots.
Yes. Owners can estimate supporter totals, remaining owner cost, and target level progress.
Yes. Supporters can compare Arc reward against secure FP and review expected profit or loss.
Yes. You can download the result table as CSV or export a simple PDF report.
Important Note: All the Calculators listed in this site are for educational purpose only and we do not guarentee the accuracy of results. Please do consult with other sources as well.