🔢 Hexadecimal Converter

Convert between Hexadecimal, Decimal, Binary, and Octal number systems instantly

HEX
Invalid hexadecimal format
DEC
Invalid decimal format
BIN
Invalid binary format
OCT
Invalid octal format

💡 How to Use This Converter

Simply type a number in any format and watch it convert automatically to all other number bases! Our converter supports real-time conversion between hexadecimal, decimal, binary, and octal systems.

Quick Tips: Hexadecimal uses digits 0-9 and letters A-F. Binary uses only 0 and 1. Octal uses digits 0-7. Decimal uses standard digits 0-9.

FF
Hex → Dec: 255
A0
Hex → Dec: 160
1234
Hex → Dec: 4660

What is Hexadecimal?

Hexadecimal (or hex) is a base-16 number system that uses sixteen distinct symbols: the numbers 0-9 to represent values zero to nine, and the letters A-F to represent values ten to fifteen. It's widely used in computing and digital electronics because it provides a more human-friendly representation of binary-coded values.

Why Use Hexadecimal?

Hexadecimal is particularly useful in programming and computer science because each hex digit represents exactly four binary digits (bits). This makes it much easier to read and write large binary numbers. For example, the binary number 11111111 can be written as FF in hexadecimal.

Key Features of Our Hex Converter

⚡ Real-time Conversion

Instantly convert between all number bases as you type, with no delays or button clicks required.

✅ Input Validation

Smart error detection prevents invalid inputs and guides you to enter correct format numbers.

📱 Mobile Friendly

Fully responsive design works perfectly on all devices, from desktop computers to smartphones.

🔒 Privacy Focused

All conversions happen in your browser - no data is sent to servers or stored anywhere.

Understanding Number Systems

Different number systems are used in various fields of mathematics and computer science. Here's a quick overview:

Common Use Cases

Our hexadecimal converter is perfect for developers, students, and professionals working with:

) { showError('hex'); } } // Convert from decimal function convertFromDec(value) { clearErrors(); if (!value) { clearOthers('dec'); return; } if (!decPattern.test(value)) { showError('dec'); return; } try { const decimal = parseInt(value, 10); if (isNaN(decimal) || decimal < 0) { showError('dec'); return; } hexInput.value = decimal.toString(16).toUpperCase(); binInput.value = decimal.toString(2); octInput.value = decimal.toString(8); } catch (e) { showError('dec'); } } // Convert from binary function convertFromBin(value) { clearErrors(); if (!value) { clearOthers('bin'); return; } if (!binPattern.test(value)) { showError('bin'); return; } try { const decimal = parseInt(value, 2); if (isNaN(decimal)) { showError('bin'); return; } hexInput.value = decimal.toString(16).toUpperCase(); decInput.value = decimal.toString(); octInput.value = decimal.toString(8); } catch (e