Can
Sakta / Sakti / Sakte Ability / Permission
Could
Saka / Saki / Sake Past Ability / Polite Permission
May
Ho Sakta Hai / Ijazat Hai Possibility / Permission
Might
Shaayad / Mumkin Hai Weak Possibility
Must
Lazmi Hai / Zaroori Hai Strong Obligation / Necessity
Shall
Hoga / Hogi / Honge Future / Formal Suggestion
Should
Chahiye / Zaroori Hai Advice / Expectation
Will
Hoga / Hogi / Honge Future Intention / Promise
Would
Hota / Hoti / Hotay Polite Request / Hypothetical
Ought to
Chahiye / Lazmi Hai Moral Duty / Advice
Need to
Zaroori Hai / Ki Zaroorat Hai Necessity
Used to
Karta Tha / Karti Thi Past Habit
Dare (as modal)
Himmat Hai / Jurrat Hai Challenge / Boldness