I want to visit Tajmahal, Red fort and Fatehpur sikri what is the time rquired and mode of quick transport at agra
To visit Taj Mahal and Agra fort you need at least 4 hours and 4 hours for Fatehpur Sikri as it is outside Agra 45 kms away...Taj and Fort you can do by Auto Rickshaw and Fatehpur Sikri by Govt operated Buses from Idgah Bus Stand and the other option is to hire a car for all the monuments.
you should take a cab if you want to cover all of this in one day.
Its better to hire a car for your tour and Taj is the main concern as day by day the no of tourists are increasing and same during the festival holidays Taj gets bit more busy so rest of your tour depends how much your time is spent to visit Taj. At least you need 2 hours for Taj and 2 hours for fort later 1 hour to reach fatehpursikri 2 hour tour and again 1 hour to come back so all togeteher you need 8 hours.
Hope it would be helpful
Tour Guide Bhoopi Agra.