Hex Calculator
Convert between decimal and hexadecimal number representations.
Calculate
Enter your values below.
Result
Result
0
Formula used
Hexadecimal is a base-16 system using digits 0-9 and letters A-F for values 10-15.
Example: 255 in decimal = FF in hexadecimal.
How to use this calculator
- Enter Decimal number, Hex number.
- Choose Direction.
- Press Calculate to see your result instantly.
FAQ
Frequently asked questions
What is hexadecimal used for?
Representing binary data compactly — common in color codes, memory addresses, and byte values.
Can I include the '0x' prefix?
Yes, it's automatically stripped if present.
Is hex case-sensitive here?
No, both uppercase and lowercase letters are accepted.
How large a number can I convert?
Any value JavaScript can represent as a safe integer.