Difference between "upto" and "up to" [closed]
Solution 1:
Upto is a misspelling of up to. -- Wiktionary
Use up to with a space between the two words. Also, as Yosef Baskin says:
You can use the following self-test: Does the single word say something different from the two words? If not, stay with two words. By contrast, into and onto do mean things other than in to and on to, so they work as single words.
Solution 2:
Up to is always two words. Upto isn't listed in the dictionaries. You should always avoid it.