Terawatts to BTU (IT) per hour converter above calculates how many BTU (IT) per hour are in 'X' terawatts (where 'X' is the number of terawatts to convert to BTU (IT) per hour). In order to convert a value from terawatts to BTU (IT) per hour (from TW to BTU/h) type the number of TW to be converted to BTU/h and then click on the 'convert' button.