Hexadecimal to Roman numerals Converter
Type a hexadecimal number to see it in Roman numerals. Below: how the conversion works, a worked example and a conversion table.
FF hexadecimal = CCLV Roman numerals
How to convert hexadecimal to Roman numerals
Go through decimal: first multiply each digit by 16 raised to the power of its position (counting from 0 on the right) and add the results; then repeatedly take away the largest Roman value that fits (1000 = M, 900 = CM, 500 = D, 400 = CD, 100 = C, 90 = XC, 50 = L, 40 = XL, 10 = X, 9 = IX, 5 = V, 4 = IV, 1 = I) and write down its symbol.
Example: FF to Roman numerals
Step 1: Hexadecimal to decimal
Multiply each digit by 16 to the power of its position (0 on the right), then add:
| Digit | Place value | Digit × place |
|---|---|---|
F = 15 | 161 = 16 | 240 |
F = 15 | 160 = 1 | 15 |
240 + 15 = 255
Step 2: Decimal to Roman numerals
Take away the largest Roman value that fits, write its symbol, and repeat until nothing is left:
| Remaining | Take away | Write |
|---|---|---|
| 255 | 100 | C |
| 155 | 100 | C |
| 55 | 50 | L |
| 5 | 5 | V |
Result: 255 = CCLV in Roman numerals.
Hexadecimal to Roman numerals table
Hexadecimal to other systems
Other systems to Roman numerals
Reverse conversion
Frequently asked questions
How do you convert hexadecimal to Roman numerals?
Go through decimal: first multiply each digit by 16 raised to the power of its position (counting from 0 on the right) and add the results; then repeatedly take away the largest Roman value that fits (1000 = M, 900 = CM, 500 = D, 400 = CD, 100 = C, 90 = XC, 50 = L, 40 = XL, 10 = X, 9 = IX, 5 = V, 4 = IV, 1 = I) and write down its symbol.
What is FF in Roman numerals?
FF in hexadecimal is CCLV in Roman numerals.
What is the largest number in standard Roman numerals?
3,999, written MMMCMXCIX. Larger numbers need extra notation such as a bar over a letter to multiply it by 1,000.