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How to Use
- 1Type a value in any base field: Binary, Octal, Decimal, or Hexadecimal.
- 2All other base fields update instantly as you type.
- 3Use optional prefixes (0b, 0o, 0x) or negative sign as needed.
- 4Copy individual values or use the copy-all button.
About Number Base Converter
The Number Base Converter translates values between Binary (base 2), Octal (base 8), Decimal (base 10), and Hexadecimal (base 16) with live updates as you type. Enter a value in any field and all others update simultaneously.
Supports large integers beyond standard 53-bit Number precision using bigint-safe conversion logic. Accepts developer-friendly notations like 0x (hex), 0b (binary), and 0o (octal) prefixes, plus underscore separators for readability.
Computer science students use it to understand number systems. Developers use it to debug hex addresses, binary flags, file permission octals, and color codes. All conversion runs locally in your browser.
Frequently Asked Questions
What number bases are supported?
Binary (base 2), Octal (base 8), Decimal (base 10), and Hexadecimal (base 16) — the four most common number systems in computing.
Can I convert very large numbers?
Yes. The converter uses bigint-safe logic that handles integers well beyond the standard 53-bit JavaScript Number precision limit.
Are negative numbers supported?
Yes. Negative values work across all base fields using a leading minus sign.
Can I use prefixes like 0x or 0b?
Yes. Enter 0x for hex, 0b for binary, or 0o for octal. The prefixes are recognized and stripped automatically for conversion.
Why do developers need to convert between bases?
Binary is how computers store data. Hex is used for memory addresses, color codes, and byte values. Octal is used in Unix file permissions. Converting between them is a daily task in systems programming.