Top-mount refrigerators are usually 65 to 69 inches tall, while side-by-side units are generally 67 to 70 inches tall. There is no such thing as a standard size for a refrigerator; heights vary greatly depending on make, model and style.
Other types of refrigerators have different sizes, but most are in the range of 64 to 70 inches. There are also compact refrigerators for smaller spaces which vary widely in size, from just 14 inches tall all the way to 35 inches. Refrigerator dimensions are not usually whole inches, so it's important to get exact measurements before planning an installation.