340 in Roman numerals

The number 340 is written in Roman numerals like this: CCCXL

CCCXL = 340

How to write 340 in Roman numerals

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

• 300 = CCC
• 40 = XL (50 − 10)

Put the parts together: CCC + XL = CCCXL.

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

Going the other way? See the Roman numeral CCCXL.

Previous number

339 in Roman numerals: CCCXXXIX

Next number

341 in Roman numerals: CCCXLI

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