Online Tool Store
Binary Hex Decimal Converter
Convert whole numbers between binary, decimal, and hexadecimal with live synchronized fields, copy-ready values, and browser-only calculation.
🔒 This tool runs entirely in your browser. Your files are never uploaded to a server.
Number base converter
Binary, decimal, and hexadecimal
Type in any field to convert the same whole number everywhere.
Quick reference
11111111₂ = 255₁₀ = FF₁₆
Example conversion is ready on load.
How it works
- Enter a positive whole number in binary, decimal, or hexadecimal.
- The other two fields update instantly.
- Copy the notation you need for your code or documentation.
FAQ
Which number bases does this convert?
It synchronizes positive whole numbers between binary (base 2), decimal (base 10), and hexadecimal (base 16).
Can I use letters in hexadecimal?
Yes. Hexadecimal values can include digits zero through nine and letters A through F.
Does the calculation happen online?
No. Every conversion happens in your browser.
How we compare
| Feature | Online Tool Store | Programmer calculator | Manual base conversion |
|---|---|---|---|
| Three synchronized bases | Yes | Usually | Manual |
| Copy controls | Per field | Varies | No |
| Browser-only conversion | Yes | Device app | Yes |
Use this focused converter for a quick one-number translation. Use a programmer calculator when you also need arithmetic or bitwise operations.