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) | hexadecimal (base 16) | quinary (base 5) | hexadecimal (base 16) |
|---|---|---|---|
| 1 | = 1 | 21 | = b |
| 2 | = 2 | 22 | = c |
| 3 | = 3 | 23 | = d |
| 4 | = 4 | 24 | = e |
| 10 | = 5 | 30 | = f |
| 11 | = 6 | 31 | = g |
| 12 | = 7 | 32 | = h |
| 13 | = 8 | 33 | = i |
| 14 | = 9 | 34 | = j |
| 20 | = a | 40 | = 10 |
The vigesimal or base 20 numeral system is based on twenty (in the same way in which the decimal numeral system is based on ten).
| hexadecimal (base 16) | quinary (base 5) | hexadecimal (base 16) | quinary (base 5) |
|---|---|---|---|
| 1 | ≈ 1 | b | ≈ 21 |
| 2 | ≈ 2 | c | ≈ 22 |
| 3 | ≈ 3 | d | ≈ 23 |
| 4 | ≈ 4 | e | ≈ 24 |
| 5 | ≈ 10 | f | ≈ 30 |
| 6 | ≈ 11 | g | ≈ 31 |
| 7 | ≈ 12 | h | ≈ 32 |
| 8 | ≈ 13 | i | ≈ 33 |
| 9 | ≈ 14 | j | ≈ 34 |
| a | ≈ 20 | 10 | ≈ 40 |
| quinary (base 5) | hexadecimal (base 16) |
|---|---|
| 1 | = 1 |
| 2 | = 2 |
| 3 | = 3 |
| 4 | = 4 |
| 10 | = 5 |
| 11 | = 6 |
| 12 | = 7 |
| 13 | = 8 |
| 14 | = 9 |
| 20 | = a |