Millinewtons to pounds-force conversion calculator above calculates how many pounds-force are in 'X' millinewtons (where 'X' is the number of millinewtons to convert to pounds-force). In order to convert a value from millinewtons to pounds-force (from mN to lbf) simply type the number of mN to be converted to lbf and then click on the 'convert' button.