TFT Bad Luck Calculator

TFT probability tool

Plan your reroll turn with clearer numbers.

Estimate expected rerolls, gold cost, and your chance to finish a board from the spot you are in right now. This calculator runs in your browser and is designed for TFT players who want a fast, transparent planning tool.

Expected rerolls Expected gold Deck simulation Bad luck check

What this tool does

It estimates how many rolls and how much gold you may need to hit a set of TFT units from your current board state.

How it works

The calculator uses pool sizes, level odds, and a Monte Carlo simulation for multi-unit roll scenarios.

What to check next

Read the reroll guide, usage guide, and policy pages if you want more context before the public launch.

Calculator assumptions and limits

TFT Bad Luck Calculator estimates reroll outcomes from the level, target units, owned copies, known enemy copies, and same-cost pool pressure you enter. The result is a planning estimate, not a guaranteed prediction. Actual games can differ because TFT shops are random and because patch data, champion pools, and set rules may change over time.

For best results, update your inputs after scouting and compare several possible plans instead of relying on one number. The tool is most useful when it helps you decide whether to roll now, save gold, level, or pivot away from a contested unit.

Editorial and update policy

This site is maintained as an independent fan-made utility for Teamfight Tactics players. Guide pages are written to explain general reroll concepts, probability interpretation, economy tradeoffs, and common scouting habits.

When the public version changes, the project should review champion data, visible page text, policy pages, and contact information so visitors can understand what the calculator does and where its estimates may be incomplete.