The height of "1" as a standalone number isn't specific enough to determine what measurement unit or context it refers to. However, if "1" is referring to 1 foot in height:

• 1 foot is equal to 12 inches.
• 1 foot equals 30.48 centimeters.

If the intent is different (such as 1 inch, 1 meter, or something else), please specify the unit for an accurate conversion or description.