FEH Arena Calculator

Estimate your team’s score in the Fire Emblem Heroes Arena

Unit 1

Unit 2

Unit 3

Unit 4 (Bonus)

Your Estimated Arena Score Range

750 – 764

Copied!

What is the FEH Arena Calculator?

The feh arena calculator is a specialized tool for players of Nintendo’s popular mobile game, Fire Emblem Heroes. Its primary purpose is to demystify the game’s complex Arena scoring system. By inputting specific stats about your team of four heroes—merges, Base Stat Totals (BST), and Skill Points (SP)—the calculator can accurately predict the score range you will achieve in the Arena. This allows players to optimize their teams for competitive play, helping them reach higher tiers and earn better weekly rewards. Whether you are a free-to-play user or a seasoned veteran, understanding your scoring potential is crucial for success.

FEH Arena Score Formula and Explanation

The Arena score is not a single number but a calculation based on the potential of each of the four heroes on your team. While the exact matchmaking algorithm has slight variations, the core formula for your team’s base score is well-understood. The final score you see is also doubled if you have a designated Bonus Hero on your team.

The formula for each unit’s individual contribution is:

Unit Score = (Merges × 2) + floor(BST / 5) + floor(Total SP / 100)

The team’s potential match score is then calculated as:

Team Score = floor( (Unit1 + Unit2 + Unit3 + Unit4) / 4 ) + 760 (Base)

If a bonus hero is on the team, this result is then doubled. This calculator handles all of this math for you, providing an estimated score range. The final range of opponents you can face is typically your base score +12 points.

Arena Score Formula Variables

Variable	Meaning	Unit (Type)	Typical Range
Merges	The number of times a hero has been merged (+1 to +10).	Integer	0 – 10
BST (Base Stat Total)	The sum of a hero’s 5 stats at level 40, ignoring skills, weapons, or merge bonuses.	Integer (in 5-point bins)	150 – 215+
Total SP	The sum of the SP cost of every equipped skill, including weapon and sacred seal.	Integer (in 100-point bins)	1,000 – 2,800+
Bonus Hero	A designated hero that doubles the entire team’s score.	Boolean (Yes/No)	N/A

Practical Examples

Example 1: High-Investment Competitive Team

A player aiming for the top tiers might use a team of highly merged, modern heroes.

• Unit 1-3: +10 Merges, 200 BST, 2600 SP
• Unit 4 (Bonus Hero): +2 Merges, 190 BST, 2000 SP

Using the feh arena calculator, this team achieves a very high score, putting them in the running for Tiers 20 and 21. The high merges and SP values on the core units create a strong base, which is then amplified by the bonus unit multiplier.

Example 2: Budget-Friendly F2P Team

A free-to-play (F2P) player can also achieve a good score by investing in Grail units and using a designated bonus hero.

• Unit 1-2 (Grail Units): +10 Merges, 185 BST, 2200 SP
• Unit 3: +5 Merges, 190 BST, 2400 SP
• Unit 4 (Askr Trio Bonus Hero): +0 Merges, 172 BST, 1400 SP

Even though the stats are lower than the premium example, the +10 merges on the Grail units provide a significant boost. This team can comfortably stay in Tier 18 or 19, demonstrating how smart investment is more important than spending money. For more F2P strategies, consider this guide on Grail unit optimization.

How to Use This FEH Arena Calculator

1. Enter Unit Data: For each of the four heroes on your team, fill in the three key values: Merges, BST, and Total SP Cost.
2. Set Merges: Use the dropdown to select the merge count for each hero, from 0 to +10.
3. Input BST: Enter the hero’s Base Stat Total. You can find this on many fan wikis or by unequipping all skills in-game. Do not include stats from skills like Fury.
4. Input SP Cost: Add up the SP cost of the hero’s weapon, assist, special, A, B, C, and S skills and enter the total. Higher cost skills like Aether (500 SP) or Tier 4 passives (300 SP) significantly increase your score.
5. Select the Bonus Hero: Check the “Bonus Unit” radio button for the hero that is currently featured as a bonus unit in the Arena. This is the most critical step for a high score.
6. Review Your Results: The calculator will instantly update your estimated score range, along with the individual score contribution of each hero. Use this data to see which hero is weighing your team down or where you can make improvements.

Key Factors That Affect Arena Score

Several factors are critical to maximizing your score. Understanding them is key to using this feh arena calculator effectively.

• Bonus Unit: This is non-negotiable. Having one of the weekly bonus units on your team doubles your score. Without one, you cannot reach the highest tiers.
• Merges: Each merge adds a significant number of points. A core of two or three +10 merged heroes is the backbone of any high-scoring team.
• Base Stat Total (BST): Newer heroes, particularly armored and some infantry units, have higher BSTs and thus a higher scoring potential. Duel skills can be used to artificially inflate the BST of older units.
• Skill SP Cost: Equipping expensive skills is vital. Prioritize 500 SP specials (Aether, Galeforce), 400 SP assists (Rally Up+), and 300 SP passives (Tier 4 skills).
• Legendary Blessings: Using Legendary Heroes during their correct season with blessed teammates provides a substantial score increase. For details, see our Legendary hero guide.
• Bonus Kills: While the base score is most important, you also get bonus points for each foe defeated by your bonus unit during a match. Aim for all four kills with your bonus hero!

Frequently Asked Questions (FAQ)

1. What is BST and how do I find it?

BST stands for Base Stat Total. It’s the sum of a unit’s HP, Atk, Spd, Def, and Res at level 40 with no skills equipped and no merge bonuses. You can find this data on sites like the Fire Emblem Heroes Wiki.

2. Why is my score a range and not a single number?

Your team’s score determines the *range* of opponents you can face. The matchmaking system will present you with opponents scoring slightly below or up to 12-14 points above your base score. This calculator shows this potential opponent range.

3. Do skills like Fury or Life and Death affect BST for scoring?

No. Stat increases from skills do not count towards the BST calculation for scoring purposes. Only the unit’s true, unaltered base stats are considered.

4. How much do merges matter?

A lot. Each merge is worth 2 points to a unit’s individual score calculation, which translates to a significant increase in the final team score. A +10 unit scores 20 points higher than a +0 version of the same unit.

5. Are exclusive skills (PRFs) better for scoring?

Usually, yes. Exclusive weapons often have a 400 SP cost, compared to the 350 SP of a refined inheritable weapon. Exclusive skills in other slots also tend to have high SP costs.

6. What are Duel Skills?

Duel skills are A-slot skills that set a unit’s BST to a minimum value (e.g., 180) for scoring purposes if their natural BST is lower. They are a great way to make old, favorite heroes viable in modern Arena. Check our skill analysis page for more info.

7. Does the Askr Trio (Alfonse, Sharena, Anna) score well?

By themselves, they have low BST and no merges, so they score poorly. However, as they are frequently on the bonus unit rotation, they are essential F2P options. Giving them premium skills can make them serviceable for maintaining a decent Arena tier.

8. How important are bonus unit kills?

Each kill by a bonus unit adds +3 points to your match score, for a total of +12 if they get all four KOs. This can often make the difference between moving up a tier or staying put. A related topic is our Aether Raids strategy guide, where scoring is also complex.