Measure the number of cubic feet you want to convert into liters. Use a measuring tape to make the calculation.
Turn your calculator on and enter the number of cubic feet using the keypad.
Press the "X" button for multiplication, and enter "28.316" in the calculator using the key pad.
Press the "=" button, and the calculator will generate the liter equivalent for the cubic feet measurement that was inputted. Re-enter the information to confirm that it has been done accurately.