Base Converter

Free Online Base Converter

This tool supports conversion between binary, octal, decimal, and hexadecimal, including both integer and fractional parts. All four bases are displayed simultaneously — enter a value in any base to see results in the other three in real time. All data is processed locally in your browser — nothing is uploaded to any server, fully protecting your privacy.

Features

• Supports binary, octal, decimal, and hexadecimal conversion
• Supports both integer and fractional conversion
• All four bases displayed simultaneously with real-time sync
• Large number support beyond safe integer range
• Binary bit separation for easy reading
• One-click copy of conversion results
• Pure frontend offline processing, protects user privacy

How to Use

1. 1Click on any base card's input field
2. 2Enter a value, other bases update in real time
3. 3Use the bit separation toggle to format binary display
4. 4Adjust precision to control fractional digit count
5. 5Click the copy button to copy conversion results