Quinary (base-5 or pental) is a numeral system with five as the base. A possible origination of a quinary system is that there are five fingers on either hand.
| quinary (base 5) | base 10 | quinary (base 5) | base 10 |
|---|---|---|---|
| 1 | = 1 | 21 | = 11 |
| 2 | = 2 | 22 | = 12 |
| 3 | = 3 | 23 | = 13 |
| 4 | = 4 | 24 | = 14 |
| 10 | = 5 | 30 | = 15 |
| 11 | = 6 | 31 | = 16 |
| 12 | = 7 | 32 | = 17 |
| 13 | = 8 | 33 | = 18 |
| 14 | = 9 | 34 | = 19 |
| 20 | = 10 | 40 | = 20 |
| base 10 | quinary (base 5) | base 10 | quinary (base 5) |
|---|---|---|---|
| 1 | ≈ 1 | 11 | ≈ 21 |
| 2 | ≈ 2 | 12 | ≈ 22 |
| 3 | ≈ 3 | 13 | ≈ 23 |
| 4 | ≈ 4 | 14 | ≈ 24 |
| 5 | ≈ 10 | 15 | ≈ 30 |
| 6 | ≈ 11 | 16 | ≈ 31 |
| 7 | ≈ 12 | 17 | ≈ 32 |
| 8 | ≈ 13 | 18 | ≈ 33 |
| 9 | ≈ 14 | 19 | ≈ 34 |
| 10 | ≈ 20 | 20 | ≈ 40 |
| quinary (base 5) | base 10 |
|---|---|
| 1 | = 1 |
| 2 | = 2 |
| 3 | = 3 |
| 4 | = 4 |
| 10 | = 5 |
| 11 | = 6 |
| 12 | = 7 |
| 13 | = 8 |
| 14 | = 9 |
| 20 | = 10 |