321 in Roman numerals

The number 321 is written in Roman numerals like this: CCCXXI

CCCXXI = 321

How to write 321 in Roman numerals

Split the number by place value and write each part in Roman numerals:

• 300 = CCC
• 20 = XX
• 1 = I

Put the parts together: CCC + XX + I = CCCXXI.

Going the other way? See the Roman numeral CCCXXI.

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320 in Roman numerals: CCCXX

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322 in Roman numerals: CCCXXII

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