When you are including someone or something with you. For example: Do you want to go with me, too? (replacing also)
The word "too" is used to indicate excessiveness or addition. It can be used to show agreement or similarity ("I want to go too"), as well as for emphasis or exaggeration ("It's too hot outside").
If it is the last word in the sentence than yes you would use the comma. Commas are so you could take a little rest between words. Examples: I like cotton candy, too! Your at this park, too? I can't believe you did this to me, too! You gossip, too?
After the feast, there were only orts of food left on the table.
I can use the word "for" in a sentence to indicate a purpose or reason, such as "I am studying for my exam."
A comma before "too" at the end of a sentence is necessary only if "too" is being used to mean "also" or "as well." For example: "I want to go too." If "too" is used for emphasis at the end of a sentence, a comma is not needed. For example: "The party was great too!"
A caret symbol (^) is commonly used to indicate that a word or phrase should be removed from a sentence.
I find it too hard to remember whether to use "to" or "too" in a sentence.
You ask too many questions.
He wanted to read but it was too dark.
Example sentence - The music was too loud to enjoy.
After the feast, there were only orts of food left on the table.
somethings are too convoluted
Grab my portfolio, too.
If you want to lengthen your sentence, say, "Would you please use the word, "lengthen" in a sentence? (Check spelling, too)
You are too late to start this job.
My chinos are fading too fast.
This environment is too hot and humid.
Too many alternatives: use it in a sentence.