Data & Base Number Converter
Swap between hexadecimal, decimal, binary, octal and text encodings. Paste a value, convert instantly, and copy the result — no install required.
Why use these tools?
- Fast checks for homework, color values, and debug dumps.
- Optional step-by-step process so you can learn how the math works.
- UTF-8 options for text ↔ binary/hex so multilingual text stays readable.
Files stay in your browser — nothing is uploaded to our servers.
Popular converters
Encoding & color
All data tools
Which tool should I use?
- Turn hex into everyday numbers → Hexadecimal → Decimal
- Turn everyday numbers into hex → Decimal → Hexadecimal
- Decode 0/1 bits into text (UTF-8 for most languages) → Binary → Text
- Encode text as hexadecimal → Text → Hexadecimal
- Encode text as Base64 → Text to Base64
- Turn a hex color into RGB → Hex to RGB
FAQ
- Is conversion done on my device?
- Yes. Base and encoding conversions run in your browser and are not stored as files on our servers.
- Can I see calculation steps?
- Many number-base pages offer a process view so you can follow remainders and groupings.
- Text looks wrong after decoding?
- Pick UTF-8 in the options, then convert again. Wrong encoding is the usual cause of mojibake.