Bring your baht to the currency exchange desk such as a Thomas Cooke found in the Bombay airport. Ask to exchange the baht for rupees. The rate of exchange as of January 2011 was one rupee for .75 baht. Currency exchange rates change daily.
Go to your hotel desk and ask if they do currency exchanges, noting you wish to change Thai baht to rupees. Many hotels have currency exchange but you may pay surcharges for the exchange. Surcharge fees may be different -- higher or lower -- than those charged at the airport kiosks.
Go to a branch of the Reserve Bank of India and ask to exchange the baht for the rupees. The Reserve Bank of India is one of the larger banks in the country and offer currency exchange. Smaller fees may be assessed than those at hotels.
