How many pennies equal to one foot?

To determine how many pennies equal one foot, we need to know the thickness of a penny. A U.S. penny is approximately 1.52 millimeters thick. Since one foot is equal to 304.8 millimeters, you can fit about 200 pennies in a stack that equals one foot (304.8 mm ÷ 1.52 mm ≈ 200).