Tons of coal equivalent to gigacalories converter on this page calculates how many gigacalories are in 'X' tons of coal equivalent (where 'X' is the number of tons of coal equivalent to convert to gigacalories). In order to convert a value from tons of coal equivalent to gigacalories (from TCE to Gcal) just type the number of TCE to be converted to Gcal and then click on the 'convert' button.