# Swap Rate
The Market module also allows you determine the result from a swap operation without actually executing the swap. To simulate a swap operation, run:
terracli query market swap <offer_coin> <ask_denom>
offer_coin is the coin to be traded and
ask_denom the denomination to be swapped into.
All currencies in the Terra ecosystem can be directly swapped into another at the effective oracle exchange rate. To swap one currency for another, run:
terracli tx market swap \ <offer_coin> \ <ask_denom> \ --from mykey \
offer_coin is the coin looking to be traded and
ask_denom the denomination of the coin to be swapped into.
For Terra<>Luna swaps, Constant-Product spread pricing model is enforced to limit consensus-related attack vectors. Terra<>Terra swaps have a constant Tobin Tax (0.3%).