Kinah LedgerAion 2 enhancement calculator
The official enhancement rates for every grade, the pity bonus after each failure, and what getting to +15 or +20 really costs in tries, Kinah and stones.
Calculate your enhancement
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Legend enhancement rates
| Step | Base rate | Added per fail | Average tries | 9 in 10 done by | Most it can take |
|---|---|---|---|---|---|
| +11 | 65% | +5% | 1.49 | 3 | 8 |
| +12 | 50% | +5% | 1.86 | 3 | 11 |
| +13 | 35% | +5% | 2.44 | 5 | 14 |
| +14 | 25% | +5% | 3.03 | 6 | 16 |
| +15 | 20% | +5% | 3.42 | 6 | 17 |
+1 to +10: 100%. Max +15.
Unique enhancement rates
| Step | Base rate | Added per fail | Average tries | 9 in 10 done by | Most it can take |
|---|---|---|---|---|---|
| +11 | 65% | +5% | 1.49 | 3 | 8 |
| +12 | 50% | +5% | 1.86 | 3 | 11 |
| +13 | 35% | +5% | 2.44 | 5 | 14 |
| +14 | 25% | +5% | 3.03 | 6 | 16 |
| +15 | 20% | +5% | 3.42 | 6 | 17 |
+1 to +10: 100%. Max +15.
Heroic (Epic) enhancement rates
| Step | Base rate | Added per fail | Average tries | 9 in 10 done by | Most it can take |
|---|---|---|---|---|---|
| +11 | 65% | +5% | 1.49 | 3 | 8 |
| +12 | 50% | +5% | 1.86 | 3 | 11 |
| +13 | 35% | +5% | 2.44 | 5 | 14 |
| +14 | 25% | +5% | 3.03 | 6 | 16 |
| +15 | 20% | +5% | 3.42 | 6 | 17 |
| +16 | 65% | +5% | 1.49 | 3 | 8 |
| +17 | 50% | +5% | 1.86 | 3 | 11 |
| +18 | 35% | +5% | 2.44 | 5 | 14 |
| +19 | 25% | +5% | 3.03 | 6 | 16 |
| +20 | 20% | +5% | 3.42 | 6 | 17 |
+1 to +10: 100%. Max +20.
Pendants are different
Pendant enhancement starts failing at +1: 75% for the first step, down to 6% for +15, with a smaller pity bonus (3 to 5%).
| Step | Base rate | Added per fail | Average tries | 9 in 10 done by | Most it can take |
|---|---|---|---|---|---|
| +1 | 75% | +5% | 1.31 | 2 | 6 |
| +2 | 50% | +5% | 1.86 | 3 | 11 |
| +3 | 33% | +5% | 2.54 | 5 | 15 |
| +4 | 33% | +5% | 2.54 | 5 | 15 |
| +5 | 25% | +5% | 3.03 | 6 | 16 |
| +6 | 25% | +4% | 3.14 | 6 | 20 |
| +7 | 25% | +4% | 3.14 | 6 | 20 |
| +8 | 20% | +4% | 3.57 | 7 | 21 |
| +9 | 20% | +4% | 3.57 | 7 | 21 |
| +10 | 20% | +4% | 3.57 | 7 | 21 |
| +11 | 15% | +3% | 4.39 | 8 | 28 |
| +12 | 10% | +3% | 5.23 | 10 | 30 |
| +13 | 10% | +3% | 5.23 | 10 | 30 |
| +14 | 8% | +3% | 5.64 | 10 | 30 |
| +15 | 6% | +3% | 6.10 | 11 | 31 |
| +16 | 5% | +2% | 7.32 | 13 | 41 |
| +17 | 4% | +2% | 7.70 | 13 | 41 |
| +18 | 3% | +2% | 8.10 | 14 | 42 |
| +19 | 2% | +2% | 8.54 | 14 | 42 |
| +20 | 1% | +2% | 9.02 | 15 | 43 |
How the pity bonus works
Each failed try on a step adds its pity bonus to the next try on that same step, until it succeeds or reaches 100%. At +15 (20% base, +5% per fail) the 17th try is certain, and on average it takes 3.4 tries. "Average tries" and "9 in 10 done by" above are worked out exactly from that rule.
Rates from NCSOFT's official probability disclosure for the Korean service (probability.plaync.com), table dated 2026-10-21. The global service has not published its own table, so these may differ on your server. Names are the official English item names where the dictionary has them.
Questions
What are the enhancement rates in Aion 2?
On the Korean service, Legend, Unique and Heroic gear always succeeds from +1 to +10, then +11 is 65%, +12 50%, +13 35%, +14 25% and +15 20%. Heroic gear repeats those rates from +16 to +20. Each failure adds 5% to the next try on that step.
Does failing an enhancement break or downgrade gear in Aion 2?
No. The official table lists the penalty for failing a gear enhancement as keeping the current level: the item does not break and does not drop a level.
How many tries does +15 take?
At 20% with +5% per failure, 3.4 tries on average, 9 in 10 players are done by try 6, and the 17th try always succeeds.