Number Base Converter
Advanced number system converter supporting 15+ bases, bit analysis, arithmetic operations, and educational content.
Number Conversion
Decimal (10)
Hexadecimal (16)
Decimal: 255
Valid characters: 0123456789
All Base Conversions (4 bases)
| Base | Name | Result | With Prefix | Description | Copy |
|---|---|---|---|---|---|
| 2 | Binary | 11111111 | 0b11111111 | Computer logic, digital systems | |
| 8 | Octal | 377 | 0o377 | Unix permissions, legacy systems | |
| 10 | Decimal | 255 | 255 | Standard human counting | |
| 16 | Hexadecimal | FF | 0xFF | Programming, colors, memory |
Quick Examples
255
Common byte value (2^8 - 1)256
2^8512
2^91024
2^10 (1KB)2048
2^114096
2^12 (4KB page)65535
2^16 - 1 (16-bit max)16777215
2^24 - 1 (RGB max)2147483647
2^31 - 1 (32-bit signed max)42
Answer to everything3735928559
DEADBEEF in hex0
Zero1
One7
Lucky numberNumber Base Guide
Binary (2): 0,1 - Computer logic, digital systems
Octal (8): 0-7 - Unix permissions, legacy systems
Decimal (10): 0-9 - Human counting system
Hexadecimal (16): 0-9,A-F - Programming, colors
Base32: Data encoding, file sharing
Base36: Short URLs, license plates
Base64: Email attachments, web data
Quick Tips
• Toggle "Show All Bases" to see 15+ number systems
• Use the swap button to quickly reverse conversion
• Check bit analysis for binary insights
• Save frequently used numbers for quick access
• Export conversions as JSON for documentation