Bills are denoted in units of MIL, or one thousand. For example, 20 MIL is 20 thousand colones. As of February 2022, 640 colones are the equivalent of $1 USD. This means that the 1,000 colones bill is $1.56 USD, 10,000 colones bill is $11.56, 100 colones coin is about 16 cents, 10 colones coin is just under 2 cents.