343 in Roman numerals

The number 343 is written in Roman numerals like this: CCCXLIII

CCCXLIII = 343

How to write 343 in Roman numerals

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

• 300 = CCC
• 40 = XL (50 − 10)
• 3 = III

Put the parts together: CCC + XL + III = CCCXLIII.

When a smaller symbol comes before a larger one, it is subtracted.

Going the other way? See the Roman numeral CCCXLIII.

Previous number

342 in Roman numerals: CCCXLII

Next number

344 in Roman numerals: CCCXLIV

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