Pounds per quart (US) to pounds per cubic inch conversion calculator shown above calculates how many pounds per cubic inch are in 'X' pounds per quart (US) (where 'X' is the number of pounds per quart (US) to convert to pounds per cubic inch). In order to convert a value from pounds per quart (US) to pounds per cubic inch (from lb/qt to lb/cu in) just type the number of lb/qt to be converted to lb/cu in and then click on the 'convert' button.