The official currency of Kenya is the Kenyan Shilling. The most preferred rate for exchange in Kenya is from USD to KES. One Kenyan Shilling comprises 100 cents. The denominations that are commonly available include KSh1, KSh5, KSh10, and KSh20. 50 Cents and 40 Cents are also available.
As widely reported by people travelling to Kenya, the easiest way to exchange money in Kenya is to use an ATM. The easiest currencies to exchange in Kenya are British Pound (Sterling) and the USD. You can even transact in USD at bigger establishments such as hotels and national parks. Make sure you spend all your currency while you are in Kenya as it is close to impossible to exchange it anywhere else.