Hex Calculator
Repeated division by 16: remainder at each step gives hex digits (0-9, A-F).255÷16=15 r15(F); 15÷16=0 r15(F) → FF
Free online tool
Hex Calculator
Enter a decimal integer to see its hex equivalent.
Instant calculation
Hex Calculator
Enter a decimal integer to see its hex equivalent.
Your result
Calculation
Your numbers stay in this browser. Nothing is uploaded or saved.
Three clear steps
How to use this calculator
- 01
Enter decimal number
Type the decimal integer to convert.
- 02
Calculate
See the hexadecimal representation.
- 03
Read hex
Digits use 0-9 then A=10 through F=15.
The formula
How this calculation works
Divide by 16 repeatedly. Remainders 10-15 become A-F. Read remainders in reverse order.
Check the method
Worked examples
Each example follows the same formula used by the calculator.
What is 255 in hex?
255÷16=15 r15(F); 15÷16=0 r15(F) → FFFFCommon questions
Questions about this calculation
What is the Hex Calculator?
The Hex Calculator helps you convert a decimal number to its hexadecimal representation. Enter your values and select Calculate to get an instant result.
How is the result calculated?
Divide by 16 repeatedly. Remainders 10-15 become A-F. Read remainders in reverse order.
Can you show an example?
Example: What is 255 in hex? — FF.
Is my data saved when I use the Hex Calculator?
No. All calculations run locally in your browser. Your inputs and results are never uploaded, stored or shared with anyone.
Is the Hex Calculator free to use?
Yes. The Hex Calculator is completely free. No account, sign-up or payment is required. It works on mobile, tablet and desktop.
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