Does the calculator use official RNG vs Fruit drop rates?
No. You enter the odds shown to you. The site does not currently provide preset blade or pet rates.
RNG vs Fruit Luck Calculator
Enter a one-in-N rate or percentage to estimate your chance of seeing at least one success, the average rolls, and the rolls needed for common confidence targets.
Roll outlook
Chance after 100 rolls
9.520785%
Each roll is treated as independent with a constant chance. Expected rolls are an average, not a guarantee.
- Base chance
- 0.1%
- Modelled chance / roll
- 0.1%
- Expected rolls
- 1,000
- Expected time
- 33.3 min
| Target | Rolls | Time |
|---|---|---|
| 50% | 693 | 23.1 min |
| 90% | 2,302 | 1.3 hr |
| 99% | 4,603 | 2.6 hr |
Custom model: the Luck field multiplies the base chance by 1 + Luck%. RNG vs Fruit's live server formula has not been selected, so this is not a claim about hidden game code.
How it works
Probability, without invented game rates
The calculation uses independent rolls with a constant probability. Your Luck input is a transparent multiplier, capped at 100% per roll.
At least one success
Uses 1 − (1 − p)ⁿ with stable math for rare odds.
Expected rolls
Uses 1 ÷ p as a long-run average, never as a promise.
Confidence target
Finds the first whole roll count that crosses the selected probability.
Questions
Calculator FAQ
What does 100% Luck mean in this calculator?
It doubles the entered chance in this custom model. That does not prove the live game uses the same formula.
Are expected rolls a guarantee?
No. Expected rolls are a long-run average. A confidence threshold is still a probability unless the per-roll chance is 100%.
Why does the calculator use one-in odds and percentages?
Those two modes let you copy whichever rate format you can see in-game without converting it first.