1. He is my age.
2. He is the same age as I am.
3. He and I are of the same age.
Are they all the same? Do you have other similar expessions?
They are all the same, except I'd leave out "of" in the third one.
You could also say, "We are the same age."
Thank you.
How about this one: He is as old as I am.
It's perfect.
Yes, all three expressions convey the same meaning: that two individuals, referred to as "he" and "I" in this case, have the same age. They are all variations of stating that the ages of the two individuals are identical.
Other similar expressions that can be used to convey the same meaning include:
4. He and I are equals in age.
5. His age is equal to mine.
6. We share the same age.
7. Our ages are the same.
8. He and I are both the same age.
9. We are of equal age.
10. Our ages match.
These expressions can all be used interchangeably to convey that two or more individuals have the same age.