Decimal to Hexadecimal Converter
Convert base-10 numbers to hex with prefix and case options.
—
Binary
—
Octal
Hex is position-16 notation using 0–9 then A–F: FF = 15·16 + 15 = 255. Each hex digit is exactly 4 bits.
How to use the Decimal to Hexadecimal tool
- Enter your decimal to hex in the fields above.
- Adjust any slider or type an exact number — the answer updates as you go.
- Copy the result and close the tab. Nothing you entered was sent anywhere.
About the Decimal to Hexadecimal tool
Enter a decimal number to get its hexadecimal form, with your choice of 0x-prefixed lowercase, uppercase digits, or a bare value for raw byte streams. Binary and octal appear alongside.
Each hex digit is exactly 4 bits, which is why hex dominates color codes, memory addresses and byte dumps.
Everything runs locally in your browser: no data is uploaded, no account is needed, and it works offline once the page has loaded.
Embed this tool
Customize and copy an iframe. Linking back helps both sites.