Years

How old are you?
I am nineteen years old.

A 19-year-old writer? Wow!

:)

Yup, here we go again. Do you know the correct way to hyphenate (or not) and spell out (or not) an age in a sentence?

Here's the quickest tip I found while researching:

From Grammar Girl ...

Many people get confused about when to use hyphens when writing ages. Here's a Quick and Dirty Tip that will help: When the age is an adjective that comes before the noun and modifies the noun, or when the age is a noun, hyphenate.

• My eight-year-old neighbor wrote a poem about commas for National Grammar Day.

• That 70-year-old with the purple hoodie loves Justin Bieber.

When the age is part of an adjective phrase after the noun, don't hyphenate.

• Charlie Sheen is 45 years old

• His twin sons are nearly two years old.

...

Any questions?