Earn HSBC RewardCash whenever you spend with HSBC Credit Cards and enjoy the sizzling rewards from Dining, Shopping, Lifestyle and more. What’s more, HSBC credit card customers can now convert RewardCash into K Dollars via the RewardCash conversion function in the HSBC Reward+ app! At $1 RewardCash = 1 K Dollar, you can now turn your credit card rewards into instant cash at participating merchants that accept K Dollar.