My prescription number on my contact lenses is -7.00, what does this mean?

I know im nearsighted, but what exactly does the -7 mean and what are the typical range if numbers, do you think mine is high

Does it mean you're hungry?
Cause I'm hungry

You have the same contact prescription as me. -7.00 is in the high middle range. -0.50 is the mildest prescription (better eyesight) and -12.00 is the worst, at least in terms of regular contacts for near sighted people.

Negative numbers denote nearsightedness while positive numbers denote farsightnedness.

I've always had bad eyesight, and compared to the average person, yes, it's high, but it's not as bad as it could be. Meaning, it's not the worst prescription you can have.