UnitConNumbers
Numbers can be written in several bases and notation systems. Decimal is standard for everyday arithmetic, binary and hexadecimal are essential in computing, octal appears in certain technical contexts, and Roman numerals remain common in clocks, outlines, and formal labels. This converter helps users move between those systems while preserving meaning. It is useful for developers, students, and anyone working with coded or historical numbering formats.
Common conversions
| From | To |
|---|---|
| 255 Decimal | 255 Hexadecimal |
| 255 Decimal | 255 Binary |
| 64 Decimal | 64 Binary |
| 2024 Decimal | 2,024 Roman Numeral |
Frequently asked questions
Decimal to binary conversion rewrites the number using powers of 2 instead of powers of 10. The tool handles the calculation instantly and is especially useful for programming and electronics.
`0xFF` is hexadecimal notation and equals 255 in decimal. The `0x` prefix indicates that the number is written in base 16.
Hexadecimal is base 16. It uses the digits 0 to 9 and the letters A to F.
2024 in Roman numerals is MMXXIV. Roman numerals are additive and subtractive rather than positional like decimal.
Octal is base 8 and is still seen in areas such as Unix file permissions and some legacy computing systems.