MuffinMetrics — A New Era of FFXI Simulation & Gear Optimization
Hey everyone — I’m
HapaMuffin, the creator of
MuffinMetrics, a
Final Fantasy XI combat and gear simulator designed to bring unmatched precision and flexibility to the community I love.
I’ve been playing FFXI for over 20 years, and though I’m now disabled and unable to work in the traditional sense, I dedicate my time every day to developing tools that help others enjoy this game more deeply. MuffinMetrics is a labor of love that I’ve built completely solo — line by line — to give players a modern, accurate, and creative way to test builds, compare sets, and understand how the math behind FFXI really works.
What MuffinMetrics Does
MuffinMetrics is a full-featured FFXI simulator with near-complete in-game item coverage and true-to-game damage calculations. It uses verified BG-Wiki and in-game formulas for
PDIF, fSTR, WSC, and more.
It’s not just a calculator — it’s a workshop for testing ideas and refining builds. Whether you’re chasing high-end DPS, designing experimental setups, or just exploring lockstyles, MuffinMetrics gives you a clear picture of your stats and results.
What Sets It Apart
Unlike other FFXI simulators,
MuffinMetrics correctly separates Damage Limit + from traits and gear.
Most tools treat both as the same multiplier — but they
don’t stack that way in-game!
Traits are
additive to the PDIF cap, while
Gear is
multiplicative of the total cap.
The full calculation is much larger, but here’s a quick visual example:
Code
(Weapon + Trait) × Gear ≠ Weapon × (Trait + Gear)
Correct: (3.25 + 0.20) × 1.07 = 3.6915
Incorrect: 3.25 × 1.27 = 3.4668
➡️ That difference compounds across buffs, gear, and weapon choices — leading to
major discrepancies in output if done incorrectly.
On top of that, MuffinMetrics includes dozens of
small mathematical refinements throughout its formulas to ensure results mirror true in-game performance.
It also
derives all attribute-based stats dynamically, including:
• Accuracy from DEX
• Evasion from AGI
• Defense & Magic Accuracy from VIT/INT, etc.
This gives MuffinMetrics precision among FFXI tools — matching the game’s stat flow as closely as possible.
Core Features
•
Comprehensive Gear Library — nearly every item in FFXI, including event and level 1 lockstyle gear
•
True Damage Calculations — BG-Wiki-aligned fSTR, PDIF, WSC, and WS parameters
•
Compare Page — analyze two full gearsets side-by-side
•
GearSwap Integration — export formatted sets directly into FFXI
•
Clipboard Load/Save — save or share builds instantly
•
Ambuscade Cape Creator — experiment with any augment combo
•
Level + Master Level Scaling — stats, HP/MP, and skills scale automatically
→
Job traits and effects dynamically grow with your level, and Job Point gifts auto-assign at 99 for more accurate results
What’s Next
MuffinMetrics will keep growing. Planned features include:
• ?
Ultimate Weapon Checklist +
JSE Tracker
Ultimate
Weapons Sheet |
JSE
Tracker
• ?
Skillchain Calculator
• ?
Gear LUA Importer with automatic checklist integration — it can mark off items you already own
• ?
Built-in Tracker Lists for easy progression tracking
• ?
Treasure Hunter Reference — complete data on how TH works and each tier’s value
• ?
In-app COR, BRD, and GEO Cheat Sheets (
COR
Sheet |
BRD
Sheet)
• ?
Mobile version + UI themes
• ✨
Dedicated simulators for Magic, Blue Magic, and Pet mechanics
A Note from Me
I’ve been contributing to the FFXI community for years — from creating guides and cheat sheets on
BG-Wiki (COR, BRD, GEO) to maintaining public spreadsheets like:
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Ultimate
Weapons Sheet
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JSE
Tracker
MuffinMetrics continues that same mission — to help players understand and enjoy FFXI’s depth through clarity, math, and creativity.
I also want to make one thing clear:
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MuffinMetrics will never include or support anything that violates Square Enix’s Terms of Service.
It’s built entirely as an analytical and creative resource, with respect for the game and its community.
Support the Project
My goal is to keep
MuffinMetrics free and 100% ad-free for everyone.
If you’d like to help me continue developing and maintaining it, you can support me here: To Be clear, there are no inherent benefits of supporting prior to the 1.0 launch, other then to support just because you want to.
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Patreon
— HapaMuffin
Check out our first Patreon post for more details on the project’s direction:
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The
Origins of MuffinMetrics & The Path Forward
Every bit of support helps keep the app growing, accurate, and freely available to the entire FFXI community.
Join the Community
I’ve included preview screenshots below showing what MuffinMetrics looks like in action.
If you’d like to follow development more closely, test features early, or help shape the future of the project —
come join the Discord!
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Discord
See you in Vana’diel! ?
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