Anime Zero Calculator — Reroll Odds, Pity & Evolution
Editorial contact: Raymond
Three tools for the decisions that actually cost you resources: what a Trait Reroll bank buys, whether your Spins reach a pity floor, and which weapon Evolution your Gems unlock. Every rate comes from the dated records linked below.
Trait Reroll Odds
Pick a Trait and a reroll budget to see the real chance of landing it. Anime Zero publishes a fixed roll rate for every Trait and has no Trait pity counter, so this model assumes independent rolls at a constant rate.
Odds for Fortune
Simulated sample: 1,000 rolls
Distribution
Last 30 rolls
When to open the Anime Zero calculator
Before a reroll spree
Check the odds card first. Fortune at 12.63% is nearly certain in 30 rerolls, while Deadeye at 0.01% is not close in 1,000 — and knowing that before you spend is the whole point.
Before a big summon push
LYTH sits at a 3,500-spin pity floor, so a single session will not reach it. Mythic at 175 is reachable in an afternoon with code Spins banked — the pity table shows both.
Before committing evolution Gems
The Evolution tool ranks all 12 weapons by Gem cost from 200 to 10,000, and flags Flame Director as the only one needing raid materials. A budget check stops you spending 3,000 Gems on a placeholder.
How to read Anime Zero calculator results
Read the odds card before the simulation. It is exact arithmetic on the rate you select, so it is the honest number for a budget: what your bank actually buys. The simulated sample below answers a different question — how long a real miss streak can run even when the average is on your side.
The practical order: bank Spins and rerolls from active codes first, pick a target from the tier list, then check what the Trait table says that target costs. Isolated rolls hide how long a miss streak runs; the simulator makes that risk visible before you spend.
The math inside the tools
At-least-one odds: 1 − (1 − drop rate)^rolls is the chance of seeing your target at least once. Inverting it finds the rolls a confidence level needs: at Deadeye’s published 0.01%, reaching 50% takes about 6,931 rerolls and 90% takes about 23,026.
Expected hits: rolls × drop rate. At Fortune’s 12.63%, 100 rerolls average about 12.6 hits; at Supernova’s 0.01%, 1,000 rerolls average 0.1 — which is why the expected value alone is a poor stopping rule for rare targets.
Pity floors: a pity floor is a guarantee, not a probability, so the odds column does not apply. Reaching or exceeding the counter means the target is guaranteed within that budget.
Raid drops: Paramita Pyre drops at 2% with a 35-clear pity, Staffs of Homa at 25% with 5, and Ghosts at 33% for 1–3 units. The per-clear pity counter is separate from summon pity.
Evolution budget: a straight comparison of your Gems against each weapon’s published Gem cost. It does not model material farming time, so treat it as a currency gate rather than a full readiness check.
Calculator quick take
Open the tools before a spending decision involving rerolls, Spins or evolution Gems. The odds card gives the exact arithmetic, the simulation shows how bad a real streak can look, and the pity table tells you whether waiting is cheaper than rolling. None of it guarantees an in-game result.
FAQ
How does the Anime Zero calculator work?
Three tools with different jobs. The Trait Reroll tool runs a weighted random pick across all 18 published roll rates and also prints the exact arithmetic for your budget. The Spin tool compares your spin count against summon pity floors and raid drop rates. The Evolution tool sorts every weapon by Gems so you can see what your balance unlocks.
Does the Trait Reroll tool model pity?
No, and that is deliberate. Anime Zero publishes a fixed roll rate per Trait and there is no Trait pity counter, so independent rolls at a constant rate is the correct model. Pity does exist for summons and raid drops, which is what the second tool covers.
How many rerolls does Deadeye actually need?
At a published 0.01% roll rate the expected number is 10,000 rerolls, so treat it as a long-term goal rather than a session plan. The odds card also shows what your real bank buys: even 1,000 rerolls only reaches about a 9.5% chance. The failure chance is the number that decides when to stop.
What do the pity floors mean for summoning?
Pity floors are guaranteed triggers: Mythic 175 Spins, Arcane 350 and LYTH 3,500. Since the Oct 4 rollback, normal Spins and Lucky Spins both count toward them. Epic and Legendary have no floor, and the game does not publish a per-spin percentage for those rarities, so no probability model is offered for them.
How is the Evolution budget calculated?
It compares your Gems against each weapon’s Gem cost, cheapest first, and tells you how many of the 12 evolutions you can already afford. Gems are only one part: every weapon also needs farming materials, and Flame Director additionally needs raid-only drops.
Are these numbers exact?
The odds figures are exact arithmetic on the published roll rates. The simulated samples use a fixed seed so the page and its server-rendered HTML agree, and a large sample converges on the expected rate. Confirm current values in game after a patch.
Where do I get the rerolls and spins the calculator assumes?
Codes are the fastest free source. The active list hands out hundreds of Lucky Spins and Trait Rerolls, including 300 Spins from 1MVISITS and 200 rerolls from the same code. Stage clears, Weekly Quests and Milestone rewards are the in-game sources.
Sources and verification
References for this page are listed below with their scope. Community rankings and estimates are not developer announcements; check the relevant source before relying on a value that may have changed.
- Roblox Den all-traits table (Independent) — Per-Trait roll percentages, buff values and the Matilda reroll NPC
- Bloxron Anime Zero wiki (Independent) — Pity floors by rarity, mode list, release date and store pass prices
- gam3s.gg Anime Zero tier list (Independent) — Full evolution cost table per weapon and material source locations
- Item Level Spirit’s Bathtub raid guide (Independent) — Raid drop rates, pity counters, guaranteed payouts and the Paramita Pyre title
Reference review date .
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