The Arc Calculator solves one of the most common FoE questions: how much FP do I need for the next Arc level, and what's my reward multiplier. Plug in your numbers and get an exact answer instead of guessing.
The Arc is the single most impactful GB in Forge of Empires. Higher Arc levels multiply the rewards from every other GB investment you make. This calculator shows the exact FP required to reach any level, the reward multiplier at that level, and net FP gain for standard 1.9 thread positions.
Try the Arc Calculator Now
The full interactive tool is available on the main calculator page.
Open FoE Calculator →How the Arc Calculator Works
The calculation model uses the standard FoE game math: base GB rewards scale with level according to the published curves, Arc bonuses multiply rewards by (1 + Arc%/100), and position-specific payouts follow the tiered P1-P5 distribution. Every number the calculator returns matches what you'd calculate manually — it just does it in milliseconds.
Common Questions
Is the Arc Calculator accurate?
Yes — the underlying formulas are based on the game's published mechanics. If you notice any discrepancy with in-game values, please report it via the contact page.
Does the tool account for the Arc bonus?
Every calculation applies your specified Arc bonus. If you're unsure of your exact Arc bonus, check your Arc GB level and use the corresponding percentage from the standard Arc reward table.
Do I need an account?
No. The tool works entirely in your browser with no login, no signup, no data collection beyond anonymous analytics.
Related FoE Tools
Use the Arc Calculator
Use the free calculator to test your build against the exact game math.
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