Hexadecimal Converter
Convert whole numbers between decimal and hexadecimal locally, including large integers and optional signs.
A QUICK WALKTHROUGH
How to use this tool
- Enter a decimal or hexadecimal integer.
- Choose the conversion direction.
- Copy the exact result.
Integer conversion
Supports decimal digits or hexadecimal digits with an optional 0x prefix. Fractions, exponents, and separators are rejected.
Local processing
Conversion happens in your browser and values are not uploaded or stored.
GOOD TO KNOW
Common questions
Can it convert large integers?
Yes. BigInt conversion remains exact within the browser memory limit.