Enter a number in base 15 below to convert it to base 9 instantly.
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In base 15, each digit position represents a power of 15: the rightmost digit counts individual ones, the next counts groups of 15, the next counts groups of 15×15, and so on — the same place-value idea as base 10, just with 15 distinct digits instead of ten.
Base 9 works the same way: the rightmost digit counts ones, the next counts groups of 9, the next counts groups of 9×9, and so on, using 9 distinct digits.
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| Base 10 | Base 15 | Base 9 |
|---|---|---|
| 1 | 1 | 1 |
| 2 | 2 | 2 |
| 3 | 3 | 3 |
| 4 | 4 | 4 |
| 5 | 5 | 5 |
| 6 | 6 | 6 |
| 7 | 7 | 7 |
| 8 | 8 | 8 |
| 9 | 9 | 10 |
| 10 | A | 11 |
| 11 | B | 12 |
| 12 | C | 13 |
| 13 | D | 14 |
| 14 | E | 15 |
| 15 | 10 | 16 |
| 16 | 11 | 17 |
| 17 | 12 | 18 |
| 18 | 13 | 20 |
| 19 | 14 | 21 |
| 20 | 15 | 22 |
| 21 | 16 | 23 |
| 22 | 17 | 24 |
| 23 | 18 | 25 |
| 24 | 19 | 26 |
| 25 | 1A | 27 |
| 26 | 1B | 28 |
| 27 | 1C | 30 |
| 28 | 1D | 31 |
| 29 | 1E | 32 |
| 30 | 20 | 33 |
| 31 | 21 | 34 |
| 32 | 22 | 35 |
| 33 | 23 | 36 |
| 34 | 24 | 37 |
| 35 | 25 | 38 |
| 36 | 26 | 40 |
| 37 | 27 | 41 |
| 38 | 28 | 42 |
| 39 | 29 | 43 |
| 40 | 2A | 44 |
| 41 | 2B | 45 |
| 42 | 2C | 46 |
| 43 | 2D | 47 |
| 44 | 2E | 48 |
| 45 | 30 | 50 |
| 46 | 31 | 51 |
| 47 | 32 | 52 |
| 48 | 33 | 53 |
| 49 | 34 | 54 |
| 50 | 35 | 55 |
| 51 | 36 | 56 |
| 52 | 37 | 57 |
| 53 | 38 | 58 |
| 54 | 39 | 60 |
| 55 | 3A | 61 |
| 56 | 3B | 62 |
| 57 | 3C | 63 |
| 58 | 3D | 64 |
| 59 | 3E | 65 |
| 60 | 40 | 66 |
| 61 | 41 | 67 |
| 62 | 42 | 68 |
| 63 | 43 | 70 |
| 64 | 44 | 71 |
| 70 | 4A | 77 |
| 80 | 55 | 88 |
| 90 | 60 | 110 |
| 100 | 6A | 121 |
| 200 | D5 | 242 |
| 300 | 150 | 363 |
| 400 | 1BA | 484 |
| 500 | 235 | 615 |
| 600 | 2A0 | 736 |
| 700 | 31A | 857 |
| 800 | 385 | 1078 |
| 900 | 400 | 1210 |
| 1000 | 46A | 1331 |
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