Decimal ↔ Hex Converter
Free online Decimal ↔ Hex Converter tool.
Mathstable
Input
Enter values for Decimal/Hex Converter
Direction
Value
Result
Run calculation to see results
About Decimal ↔ Hex Converter
Convert base-10 (decimal) numbers to base-16 (hexadecimal) strings, and vice versa. Highly useful for web developers working with color codes, memory addresses, and low-level debugging.
How to Use
1
Select the conversion direction (Decimal to Hex, or Hex to Decimal).
2
Type your value into the input field. For Hex, letters A-F are supported.
3
The converted result will instantly display.
Real-World Examples
Translating an RGB Value
Convert the decimal value 255 to its hexadecimal equivalent for CSS.
Input
255
Output
ff
Best Practices
- You can optionally include or omit the `0x` prefix for hexadecimal inputs; the converter will handle it automatically.
Pro Tips
Hexadecimal uses 16 symbols: 0-9 and A-F. A represents 10, B is 11, up to F which is 15.
Frequently Asked Questions
Are negative numbers supported?
Yes, the tool supports converting negative decimal numbers into their two's complement hexadecimal representation.
Is my data secure?
Absolutely. All processing is done locally in your browser.
Security & Privacy
Base conversions happen entirely client-side. No data is transmitted.