Enter a number in base 4 below to convert it to base 7 instantly.
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In base 4, each digit position represents a power of 4: the rightmost digit counts individual ones, the next counts groups of 4, the next counts groups of 4×4, and so on — the same place-value idea as base 10, just with 4 distinct digits instead of ten.
Base 7 works the same way: the rightmost digit counts ones, the next counts groups of 7, the next counts groups of 7×7, and so on, using 7 distinct digits.
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| Base 10 | Base 4 | Base 7 |
|---|---|---|
| 1 | 1 | 1 |
| 2 | 2 | 2 |
| 3 | 3 | 3 |
| 4 | 10 | 4 |
| 5 | 11 | 5 |
| 6 | 12 | 6 |
| 7 | 13 | 10 |
| 8 | 20 | 11 |
| 9 | 21 | 12 |
| 10 | 22 | 13 |
| 11 | 23 | 14 |
| 12 | 30 | 15 |
| 13 | 31 | 16 |
| 14 | 32 | 20 |
| 15 | 33 | 21 |
| 16 | 100 | 22 |
| 17 | 101 | 23 |
| 18 | 102 | 24 |
| 19 | 103 | 25 |
| 20 | 110 | 26 |
| 21 | 111 | 30 |
| 22 | 112 | 31 |
| 23 | 113 | 32 |
| 24 | 120 | 33 |
| 25 | 121 | 34 |
| 26 | 122 | 35 |
| 27 | 123 | 36 |
| 28 | 130 | 40 |
| 29 | 131 | 41 |
| 30 | 132 | 42 |
| 31 | 133 | 43 |
| 32 | 200 | 44 |
| 33 | 201 | 45 |
| 34 | 202 | 46 |
| 35 | 203 | 50 |
| 36 | 210 | 51 |
| 37 | 211 | 52 |
| 38 | 212 | 53 |
| 39 | 213 | 54 |
| 40 | 220 | 55 |
| 41 | 221 | 56 |
| 42 | 222 | 60 |
| 43 | 223 | 61 |
| 44 | 230 | 62 |
| 45 | 231 | 63 |
| 46 | 232 | 64 |
| 47 | 233 | 65 |
| 48 | 300 | 66 |
| 49 | 301 | 100 |
| 50 | 302 | 101 |
| 51 | 303 | 102 |
| 52 | 310 | 103 |
| 53 | 311 | 104 |
| 54 | 312 | 105 |
| 55 | 313 | 106 |
| 56 | 320 | 110 |
| 57 | 321 | 111 |
| 58 | 322 | 112 |
| 59 | 323 | 113 |
| 60 | 330 | 114 |
| 61 | 331 | 115 |
| 62 | 332 | 116 |
| 63 | 333 | 120 |
| 64 | 1000 | 121 |
| 70 | 1012 | 130 |
| 80 | 1100 | 143 |
| 90 | 1122 | 156 |
| 100 | 1210 | 202 |
| 200 | 3020 | 404 |
| 300 | 10230 | 606 |
| 400 | 12100 | 1111 |
| 500 | 13310 | 1313 |
| 600 | 21120 | 1515 |
| 700 | 22330 | 2020 |
| 800 | 30200 | 2222 |
| 900 | 32010 | 2424 |
| 1000 | 33220 | 2626 |
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