feh calculator

What is an FEH calculator?

A FEH calculator helps you estimate summon outcomes in Fire Emblem Heroes. Instead of guessing whether your orb stash is enough, you can model how many summons you can afford, what your likely copy count is, and your chance to pull at least one copy of a specific focus unit.

The tool above is built for planning sessions before a banner drops or before deciding whether to spark now or save for later. It is especially useful when you are deciding between:

• Sniping one color for a favorite unit
• Summoning full circles for better orb efficiency
• Stopping at one copy versus going for merges
• Comparing expected value across multiple banners

How this FEH calculator works

1) Convert orbs into expected summons

Your first constraint is cost. If you have 300 orbs and your average cost is 4 orbs per summon, the calculator assumes you can do 75 summons.

2) Apply a target pull rate

Enter the chance that any one summon gives your target unit. On a standard 3% focus banner with four focus heroes, an even split starts near 0.75% for one specific focus unit before color effects. If you are sniping effectively, your practical target rate can be higher.

3) Add pity growth

FEH banners often increase focus rates over time. This calculator lets you add a target-rate increase every 5 summons. It also supports a cap so probabilities stay realistic.

4) Estimate probability for copy goals

After computing summon-by-summon rates, the calculator estimates:

• Chance of at least 1 copy
• Chance of at least your requested copy count
• Expected total copies
• Approximate orb cost per expected copy

Important assumptions to understand

This FEH calculator gives practical planning estimates, not exact in-game outcomes. Real banners include mechanics that are hard to fully model in a simple browser tool, including pity reset behavior, color pool distributions, and decision changes during a session.

• Approximation: Pity reset from pulling a focus unit is not fully simulated here.
• Average cost: Your exact orb cost changes with circle choices and free summon value.
• Behavioral variation: Most players change strategy mid-banner after lucky or unlucky runs.

Even with those limits, this type of FEH summoning calculator is excellent for budgeting and expectation management.

How to use this tool strategically

Set a hard orb budget first

Start with what you can spend without touching emergency reserves. Planning with a strict cap prevents panic spending.

Model multiple scenarios

Run your numbers for conservative, expected, and optimistic rates. Compare:

• Sniping one color with a higher target rate but slightly higher average orb cost
• Pulling full circles with lower rate concentration but better cost efficiency
• Stopping after one copy versus pushing for merges

Use copy targets that match your goals

If you need only one functional copy, your risk profile is very different from +10 merge projects. Enter the right copy target to avoid over-investing.

Example FEH planning workflow

Suppose you have 500 orbs, estimate 4.2 orbs per summon, set a base target rate of 0.9%, and add 0.15% target increase every 5 summons. Try these target goals:

• 1 copy: Decide if your chance is high enough to commit now.
• 2 copies: Compare against waiting for rerun banners or Hero Fest value.
• 4+ copies: Check whether you should split your project across future banners.

This process turns “I hope I’m lucky” into “I know my odds and my stopping point.”

Final thoughts

A good FEH calculator does not remove randomness—it helps you plan around it. If you track your rates, budget, and copy goals before summoning, you make better long-term account decisions. Use this page as your quick summon planning tool whenever a new banner appears.