Tons of coal equivalent to cubic feet of natural gas conversion calculator shown above calculates how many cubic feet of natural gas are in 'X' tons of coal equivalent (where 'X' is the number of tons of coal equivalent to convert to cubic feet of natural gas). In order to convert a value from tons of coal equivalent to cubic feet of natural gas simply type the number of TCE to be converted to cubic feet of natural gas and then click on the 'convert' button.