Step 1: Select a target race
Choose the race you want to chase. Starter Human is excluded because it is not rerollable.
Input
Choose a target race and your current pity progress. Human is starter-only and cannot be selected.
Pity State
Counters are clamped to the game thresholds: Epic at 20 misses, Legendary at 50 misses.
Selected race baseline odds
Shark: Normal 1% | Lucky 5%
Standard Reroll
standardRoll cost
100 shards
Available rolls
250
Success within budget
98.84%
Expected rolls
66.16
Expected shards
6,615.50
Milestone success probability
50 rolls
38.84%
100 rolls
78.75%
200 rolls
97.00%
Lucky Reroll
luckyRoll cost
450 shards
Available rolls
52
Success within budget
93.17%
Expected rolls
19.96
Expected shards (with unlock)
10,483.70
Milestone success probability
50 rolls
92.28%
100 rolls
99.45%
200 rolls
100.00%
Assumptions and Data Source
- Costs used: Standard 100 shards, Lucky 450 shards, Lucky unlock 1,500 shards (toggleable).
- Pity logic used: guaranteed Epic at 20 misses, guaranteed Legendary at 50 misses.
- Probabilities are normalized from displayed race rates before calculation.
Source: How to Reroll Races in Abyss (and All Races Explained) (Beebom). Published 2026-02-09, retrieved 2026-02-09.
This calculator is for planning and may differ from live in-game behavior after patches.
Welcome to the Abyss Races Reroll Calculator
This page helps you evaluate reroll decisions with practical numbers instead of guesswork. It combines target-race odds, pity checkpoints, and budget limits into one comparison view. Use it to decide whether Standard or Lucky rerolls fit your current progression session.
Why Use This Calculator
The calculator is built for budget-aware progression. Instead of only showing one-shot odds, it estimates expected rolls and expected shard cost, then compares Standard and Lucky modes under the same target and pity conditions. That makes it easier to avoid over-spending during long reroll sessions.
For race detail context, review the Races wiki page. For more utilities, return to the Tools index.
How to Use This Reroll Calculator
Step 2: Enter your shard budget
Set the amount you are willing to spend this session, then compare how many rolls each mode can fund.
Step 3: Input current pity counters
Enter misses since Epic+ and Legendary+ to align calculations with your current account state.
Step 4: Compare Standard and Lucky cards
Review success probability, expected rolls, expected shard cost, and milestone outcomes side by side.
Step 5: Commit to one reroll plan
Pick the mode that fits your risk and cost target, then stop at your planned shard cap and reassess.
Calculator Features
Dual mode comparison
Standard and Lucky reroll outcomes are shown side by side for direct budget and probability comparison.
Pity-aware transitions
The calculator applies guaranteed Epic and Legendary pity checkpoints before calculating outcomes.
Cost expectation output
Expected rolls and expected shard costs are included so planning is not limited to hit probability only.
Reroll Calculator FAQ
What does this Abyss reroll calculator estimate?▾
It estimates target-race success chance, expected rolls, and expected shard cost for Standard and Lucky rerolls.
Can I include my current pity progress?▾
Yes. You can input misses since Epic+ and Legendary+ to align the calculation with your current state.
Does this page include Lucky unlock cost?▾
By default it does, and you can toggle the unlock cost on or off in the input section.
Should I use this instead of the Races wiki page?▾
Use both. The wiki page explains race details, while this calculator supports probability and resource planning.
How accurate are the reroll probabilities here?▾
Calculations are based on the published race rates and pity assumptions documented on this page, with normalized vectors for stable math.
Why can't I choose Human as the target race?▾
Human is treated as a starter-only race and is not rerollable, so the tool limits targets to rerollable races.
Is this an official Abyss calculator?▾
No. This is an unofficial fan-made planning tool for Abyss Roblox progression decisions.
How often is this reroll calculator updated?▾
The page is updated whenever validated race-rate or reroll-rule references are refreshed in this project.