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Convert 21 Cardinal to Ordinal

Here we convert the cardinal number twenty-one (21) to an ordinal number. This is useful if you want to use the number 21 as an adjective when you speak or write it.

There are two ways of writing 21 as an ordinal number, either with letters and numbers or just letters as follows:



When would you be using the ordinal instead of the cardinal version of 21 you ask?

You use 21 (cardinal) if you are describing how many of something, and you use 21st (ordinal) if you are describing a position or rank of something.

Like we mentioned above, remember to use the ordinal version of 21 when 21 is used as an adjective.

Convert 22 cardinal to ordinal
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Cardinal to Ordinal Converter
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