Base64 to Hexadecimal Converter [2025]

Tool rating: 0 people found this tool terrific

Decode Base64 encoded data and represent the result as a hexadecimal string. Includes options for URL-safe Base64, uppercase/lowercase, 0x prefix, and custom separators.

✓ URL-Safe Decoding✓ Uppercase/Lowercase✓ 0x Prefix Option✓ Custom Separators

Base64 Input

Hex Output

Key Features

  • Decode Base64 strings and represent the underlying binary data in hexadecimal format.
  • Supports both standard Base64 and URL-safe Base64 variations.
  • Choose between uppercase and lowercase hexadecimal characters.
  • Optionally add a "0x" prefix to each hex byte.
  • Customize the separator between hexadecimal byte representations (space, comma, newline, etc.).
  • Provides clear error messages for invalid Base64 input.
  • Includes example data for quick testing.
  • Copy functionality for the converted hexadecimal output.

Common Use Cases

Data Analysis

  • • Inspecting binary data
  • • File format analysis
  • • Reverse engineering

Debugging

  • • Network traffic analysis
  • • Examining encoded data
  • • Low-level debugging

Development

  • • Working with binary data
  • • Encoding/decoding processes
  • • System programming
  • • Cryptography

Frequently Asked Questions

What is URL-safe Base64?

URL-safe Base64 replaces the '+' and '/' characters with '-' and '_', respectively, making the encoded string safe to be included as a URL.

Why use a "0x" prefix?

The "0x" prefix is a common convention to indicate that a number is in hexadecimal format. It helps to avoid ambiguity, especially when dealing with mixed number systems.

How are separators handled?

The separator is inserted *between* the hexadecimal representations of the decoded *bytes*. For example, if the decoded bytes are `0x48 0x65 0x6C`, and the separator is a space, the output will be `48 65 6C` (or `0x48 0x65 0x6C` if the prefix is enabled).

Is my data secure?

All processing is done client-side in your browser. No data is sent to a server.

Technical Details

Hexadecimal Representation

Each byte (8 bits) of the decoded data is represented by two hexadecimal digits (0-9 and A-F).

Conversion Process

The Base64 input is first decoded using the standard `atob()` function. Then, each resulting byte is converted to its two-digit hexadecimal representation.

Comments

No comments yet

Be the first to share your thoughts! Your feedback helps us improve our tools and inspires other users. Whether you have suggestions, ideas, or just want to show your appreciation - we'd love to hear from you.

More Data Tools

ASCII to CSV Converter

Convert ASCII table format to CSV files

Base32 Decoder/Encoder

Decode or encode Base32 data

Base58 Decoder/Encoder

Decode or encode Base58 data

Base58 to Hexadecimal Converter

Convert Base64 encode to hexadecimal format

Base64 Decoder/Encoder

Decode or encode Base64 data

Base64 to ASCII Converter

Convert Base64 encode to ASCII format

Base64 to Binary Converter

Convert Base64 encode to binary format

Base64 to CSV Converter

Convert Base64 encode to CSV files

Base64 to Decimal Converter

Convert Base64 encode to decimal format

Base91 Decoder/Encoder

Decode or encode Base91 data

Binary to Base64 Converter

Convert binary to Base64

Binary to Decimal Converter

Convert binary to decimal

Binary to Gray Code Converter

Convert binary to gray code

Binary to Hexadecimal Converter

Convert binary to hexadecimal

Binary to Octal Converter

Convert binary to octal

CSV to ARFF Converter

Convert CSV files to ARFF format for ML tasks

CSV to ASCII Converter

Convert CSV files to ASCII tables

CSV to Base64 Converter

Convert CSV files to Base64 format

CSV to DOC (Word) Converter

Convert CSV files to DOC format for MS Word

CSV to HTML Converter

Convert CSV files to HTML tables and code

CSV to JPG Converter

Convert CSV files to JPG images

CSV to JSON Converter

Convert CSV files to JSON format

CSV to SQL Converter

Convert CSV files to SQL code

CSV to TSV Converter

Convert CSV files to TSV format

CSV to XLSX Converter

Convert CSV files to XLSX (Excel) format

CSV to XML Converter

Convert CSV files to XML format

CSV to XML Converter

Convert CSV files to YAML format

Decimal to ASCII Converter

Convert decimal to ASCII

Decimal to Binary Converter

Convert decimal to binary

Decimal to Gray Code Converter

Convert decimal to gray code

Decimal to Hexadecimal Converter

Convert decimal to hex

Decimal to Octal Converter

Convert decimal to octal

Decimal to Roman Converter

Convert decimal to Roman numerals

Gray Code to Binary Converter

Convert gray code to binary

Gray Code to Decimal Converter

Convert gray code to decimal

Gray Code to Hexadecimal Converter

Convert gray code to hexadecimal

Gray Code to Octal Converter

Convert gray code to octal

Hexadecimal to Base58 Converter

Convert hexadecimal to Base58 encoding

Hexadecimal to Binary Converter

Convert hexadecimal to binary

Hexadecimal to Decimal Converter

Convert hexadecimal to decimal

Hexadecimal to Gray Code Converter

Convert hexadecimal to gray code

Hexadecimal to Octal Converter

Convert hexadecimal to octal

JSON to CSV Converter

Convert JSON code to comma-separated value (CSV) files

JSON to HTML Converter

Convert JSON code to HTML table code

JSON to Markdown Converter

Convert JSON code to Markdown tables

JSON to SQL Converter

Convert JSON code to SQL

JSON to Table Converter

Convert JSON code to a table

JSON to TSV Converter

Convert JSON code to TSV

JSON to XLSX Converter

Convert JSON code to XLSX (Excel)

Number Base Converter

Convert between decimal, binary, hex, and octal

Octal to Binary Converter

Convert octal to binary

Octal to Decimal Converter

Convert octal to decimal

Octal to Gray Code Converter

Convert octal to gray code

Octal to Hexadecimal Converter

Convert octal to hexadecimal

Punycode to Unicode Converter

Convert punycode to unicode

SQL to CS ConverterV

Convert SQL code to CSV files

SQL to HTML Converter

Convert SQL code to HTML tables

SQL to JSON Converter

Convert SQL code to JSON

SQL to Table Converter

Convert SQL code to a table

SQL to XLSX Converter

Convert SQL code to XLSX file

SQL to XML Converter

Convert SQL code to XML

SQL to YAML Converter

Convert SQL code to YAML

TSV to CSV Converter

Convert TSV format to CSV file

TSV to JSON Converter

Convert TSV format to JSON

TSV to SQL Converter

Convert TSV format to SQL code

TSV to XLSX Converter

Convert TSV format to Excel file

TSV to XML Converter

Convert TSV format to XML

TSV to YAML Converter

Convert TSV format to YAML

Unicode to Punycode Converter

Convert unicode to punycode

URL Encoder/Decoder

Encode and decode URLs

XLSX to CSV Converter

Convert XLSX to CSV file format

XLSX to HTML Table Converter

Convert XLSX files to HTML tables

XLSX to JSON Converter

Convert XLSX files to JSON

XLSX to TSV Converter

Convert XLSX to TSV file format

XLSX to XML Converter

Convert XLSX files to XML

XLSX to YAML Converter

Convert XLSX files to YAML

XML to CSV Converter

Convert XML code to CSV file format

XML to SQL Converter

Convert XML to a SQL

XML to Table Converter

Convert XML to a table

XML to TSV Converter

Convert XML to a TSV file

XML to XLSX Converter

Convert XML to a XLSX file

YAML Converter

Convert between YAML and other formats

YAML to CSV Converter

Convert YAML to CSV file format

YAML to XLSX Converter

Convert YAML to XLSX file format