Number Base Converter

Base 10
Base 16

Conversion table

SourceResult

Convert signed integers between binary, octal, decimal, hexadecimal, or any custom base from 2 through 62. The converter supports arbitrary-length integers, validates every digit, and calculates locally in the browser.

Number bases from 2 to 62

Bases through 36 use digits 0–9 and letters a–z without case sensitivity. Bases 37–62 additionally use uppercase A–Z as distinct digits. Use the preset buttons for common systems or enter a custom source and target base.

Spaces and underscores can group long values for readability. Standard 0b, 0o, and0x prefixes are accepted when the selected source base is binary, octal, or hexadecimal.

Common conversions: Binary Converter · Hex Converter · Binary to Decimal · Decimal to Binary · Binary to Hex · Hex to Binary · Decimal to Hex · Hex to Decimal · Binary to Octal · Octal to Binary