| quaternary (base 4) to base 21 | ||
|---|---|---|
| 010 | = 04 | = 021 |
| 110 | = 14 | = 121 |
| 210 | = 24 | = 221 |
| 310 | = 34 | = 321 |
| 410 | = 104 | = 421 |
| 510 | = 114 | = 521 |
| 610 | = 124 | = 621 |
| 710 | = 134 | = 721 |
| 810 | = 204 | = 821 |
| 910 | = 214 | = 921 |
| 1010 | = 224 | = a21 |
| 1110 | = 234 | = b21 |
| 1210 | = 304 | = c21 |
| 1310 | = 314 | = d21 |
| 1410 | = 324 | = e21 |
| 1510 | = 334 | = f21 |
| 1610 | = 1004 | = g21 |
| 1710 | = 1014 | = h21 |
| 1810 | = 1024 | = i21 |
| 1910 | = 1034 | = j21 |
| 2010 | = 1104 | = k21 |
| 2110 | = 1114 | = 1021 |
| 2210 | = 1124 | = 1121 |
| quaternary (base 4) to base 21 | ||
|---|---|---|
| 2310 | = 1134 | = 1221 |
| 2410 | = 1204 | = 1321 |
| 2510 | = 1214 | = 1421 |
| 2610 | = 1224 | = 1521 |
| 2710 | = 1234 | = 1621 |
| 2810 | = 1304 | = 1721 |
| 2910 | = 1314 | = 1821 |
| 3010 | = 1324 | = 1921 |
| 3110 | = 1334 | = 1a21 |
| 3210 | = 2004 | = 1b21 |
| 3310 | = 2014 | = 1c21 |
| 3410 | = 2024 | = 1d21 |
| 3510 | = 2034 | = 1e21 |
| 3610 | = 2104 | = 1f21 |
| 3710 | = 2114 | = 1g21 |
| 3810 | = 2124 | = 1h21 |
| 3910 | = 2134 | = 1i21 |
| 4010 | = 2204 | = 1j21 |
| 4110 | = 2214 | = 1k21 |
| 4210 | = 2224 | = 2021 |
| 4310 | = 2234 | = 2121 |
| 4410 | = 2304 | = 2221 |
| 4510 | = 2314 | = 2321 |
| quaternary (base 4) to base 21 | ||
|---|---|---|
| 4610 | = 2324 | = 2421 |
| 4710 | = 2334 | = 2521 |
| 4810 | = 3004 | = 2621 |
| 4910 | = 3014 | = 2721 |
| 5010 | = 3024 | = 2821 |
| 5110 | = 3034 | = 2921 |
| 5210 | = 3104 | = 2a21 |
| 5310 | = 3114 | = 2b21 |
| 5410 | = 3124 | = 2c21 |
| 5510 | = 3134 | = 2d21 |
| 5610 | = 3204 | = 2e21 |
| 5710 | = 3214 | = 2f21 |
| 5810 | = 3224 | = 2g21 |
| 5910 | = 3234 | = 2h21 |
| 6010 | = 3304 | = 2i21 |
| 6110 | = 3314 | = 2j21 |
| 6210 | = 3324 | = 2k21 |
| 6310 | = 3334 | = 3021 |
| 6410 | = 10004 | = 3121 |
| 6510 | = 10014 | = 3221 |
| 6610 | = 10024 | = 3321 |
| 6710 | = 10034 | = 3421 |
| 6810 | = 10104 | = 3521 |
| quaternary (base 4) to base 21 | ||
|---|---|---|
| 6910 | = 10114 | = 3621 |
| 7010 | = 10124 | = 3721 |
Quaternary is the base-4 numeral system. It uses the digits 0, 1, 2 and 3 to represent any real number.