In the context of the Air Miles Reward Program, you cannot directly convert "Dream Miles" into "Cash Miles" (or vice versa) once they have already been earned. When you set up your Air Miles account, you are required to set a preference slider that determines what percentage of your future earnings goes into each "account." If you have accumulated a large balance of Dream Miles—which are typically used for flights, hotels, and merchandise—they must stay in that category. Similarly, Cash Miles are intended for instant redemptions at the checkout of participating partners or for e-vouchers. Because the two currencies have different redemption values and internal accounting structures, the program does not allow for a manual transfer between them. If you find that you have too many Dream Miles, the best strategy is to adjust your earning preference to 100% Cash Miles for all future transactions. This ensures that every new mile earned will be available for immediate use at the grocery store or gas station, while you slowly deplete your Dream Miles balance on travel or larger rewards.