Calculator Inputs
Example Data Table
| Hero Type | Base HP | Base Atk | Base Spd | Base Def | Base Res | Suggested Asset | Merge Goal |
|---|---|---|---|---|---|---|---|
| Fast Sword Unit | 40 | 38 | 43 | 30 | 26 | Spd | +10 |
| Brave Attacker | 41 | 45 | 24 | 36 | 19 | Atk | +5 |
| Magic Tank | 39 | 37 | 28 | 25 | 44 | Res | +10 |
Formula Used
Final Stat Formula
Final Stat = Base Stat + Rarity Adjustment + Trait Bonus + Merge Bonus + Dragonflower Bonus + Support Bonus + Weapon or Refine Bonus + Blessing Bonus + Visible Buff + Resplendent Bonus
Merge Distribution
The calculator ranks stats from highest to lowest base value. Merge points are then distributed through that priority order. A first merge can also remove the flaw penalty when the option is checked.
Dragonflower Distribution
Dragonflowers add one point at a time. The tool cycles through the same ranked stat order. This gives a clear planning estimate for long-term investment.
How to Use This Calculator
- Enter the neutral level 40 base stats for the hero.
- Select the asset and flaw shown on your unit.
- Choose regular or super trait values.
- Add the planned merge level and dragonflowers.
- Enter weapon might, refine type, support, and buffs.
- Press the calculate button.
- Review the result above the form.
- Export the table as CSV or PDF for later planning.
FEH IV Merge Planning Guide
Why IVs Matter
IVs shape how a hero performs. One stat becomes stronger. Another may become weaker. This can change a build. A fast unit often wants more Spd. A brave weapon user often wants more Atk. A tank may prefer Def or Res. This calculator helps you compare those choices before spending resources.
Understanding Merges
Merges improve stats and reduce bad trait pressure. The first merge is especially useful when a flaw exists. It can remove the flaw penalty. Later merges add more points across the stat spread. A +10 project gains a much stronger final profile. That matters for arena scoring and hard maps.
Dragonflowers and Support
Dragonflowers add small but valuable stat gains. They are limited, so planning is important. Summoner support also adds visible stats. It can make a favorite hero safer and more flexible. Blessings, weapons, and refines can change the final numbers even more.
Using the Result
Look at both clean total and visible total. Clean total is better for base investment review. Visible total includes support, weapon, blessing, refine, and buffs. Use it for combat previews. Compare asset choices before merging. Try an Atk build, then try a Spd build. Export each result. This creates a useful record for your barracks plan.
Best Planning Tip
Do not judge one stat alone. A strong hero needs the right mix. Atk helps damage. Spd controls follow-ups. Def and Res improve survival. HP supports many skills. Use the chart to see the full picture. Then choose the merge path that fits your role.
FAQs
1. What does this FEH IV merge calculator do?
It estimates final hero stats after assets, flaws, merges, dragonflowers, support, weapon might, refines, blessings, and visible buffs.
2. Can I use this for any hero?
Yes. Enter the hero’s neutral base stats manually. The tool then applies your selected traits and investment options.
3. Does the first merge remove a flaw?
The calculator includes that option. Keep it checked when you want the first merge to remove the selected flaw penalty.
4. What is a super asset?
A super asset gives a larger stat increase than a regular asset. Use +4 when your chosen hero has one.
5. What is a super flaw?
A super flaw gives a larger stat penalty. Select -4 when the hero’s flaw is known to be a super flaw.
6. Why is weapon might added to Atk?
Visible Atk includes weapon might. This helps you compare the battle-ready stat shown after equipping a weapon.
7. Are dragonflowers exact for every hero?
This tool uses a ranked stat cycle for planning. Always compare with in-game values when exact hero data is required.
8. Can I save the results?
Yes. Use the CSV export for spreadsheets. Use the PDF export for a clean printable report.