RNGdle Number Rarity Calculator
Any number, every badge, exact odds — the same engine that scores the daily roll.
How the calculator works
Type any whole number between 0 and 1,000,000 and it is checked against all 153 badge rules: substrings it contains (420, 1337, 777), shapes its digits make (staircases, hills, mirrors), how many digits repeat, and number-theory properties like primes, perfect powers and Fibonacci numbers. Every badge it earns is listed with its rule, rarity and EP, and the digits that triggered it are highlighted. The total EP is ranked against the full distribution of possible rolls to give the tier and the Top-N% figure — the exact same calculation the game uses on your daily roll.
Use it to settle arguments about whether a roll was actually lucky, to see what a famous number would score, or to learn the badge set before you roll. For unlimited random numbers with session stats, try practice mode; for the full rulebook, read the guide.
What the RNGdle calculator tells you
Four things, in the order that matters. The tier (Trash to Mythic) is the headline: it is where the number's total EP lands among all 1,000,001 possible rolls. The Top-N% is the same fact as a number — Top 2% means only 2% of rolls score at least as much. The EP is the sum of every badge the number earns, each worth 100 ÷ its probability. And the badge list is the explanation: every rule the number satisfied, its rarity band, its EP, and which digits triggered it. If a roll ever feels “robbed”, this is where you find out why — usually a badge you expected has a stricter rule than its name suggests.
RNGdle calculator examples
A few numbers to calibrate your sense of rare, computed live by the same engine:
| Number | Tier | Top | Badges | EP |
|---|---|---|---|---|
| 1 | Mythic | 0.01% | 38 | 555,212,807 |
| 1,337 | Mythic | 0.1% | 14 | 353,685 |
| 777,777 | Mythic | 0.01% | 29 | 972,573 |
| 142,857 | Uncommon | 31.5% | 17 | 8,479 |
| 123,456 | Mythic | 0.3% | 22 | 208,318 |
| 500,000 | Mythic | 0.01% | 32 | 22,641,742 |
| 999,983 | Mythic | 0.3% | 24 | 210,848 |
| 482,913 | Common | 69.8% | 14 | 4,573 |
Notice the shape of the scale: an ordinary six-digit number like 482,913 sits in the Common band with a few hundred EP, a meme number like 1,337 jumps straight to Mythic on the strength of one 0.03% badge, and the number 1 is in a class of its own because every perfect-power badge fires at once. That is why the daily leaderboard is usually decided by one lucky pattern rather than by many small ones — and why the RNGdle calculator is the fastest way to learn which patterns those are.
Frequently asked questions
Is this an official RNGdle EP calculator?
It is our own calculator, using our engine's badge set — which was built to mirror the genre's conventions (EP = 100 ÷ probability, badges stack, seven rarity tiers) and validated against published probabilities. It is not affiliated with rngdle.com, so treat the EP as ours: an accurate, transparent estimate of how rare a number is.
Does analysing a number here affect my daily roll?
No. The calculator runs entirely in your browser and never touches the leaderboard, your streak or your collection. Analyse as many numbers as you like.
What is the best number to analyse?
The number 1 (or 0): every perfect-power badge fires at once. For real rolls, the highest scores come from stacked families — repeated digits plus a palindrome plus lucky sevens, like 777777.
Where do the probabilities come from?
We run all 1,000,001 possible numbers through every badge rule and count the hits. A badge's probability is hits ÷ 1,000,001, and its EP is 100 ÷ that probability, so nothing is hand-tuned.