To convert 5.7 foot to inch, multiply the foot value by the conversion factor of 12.000000. So, 5.7 × 12.000000 = 68.4000 inch.

5.7 foot equals exactly 68.400000 inch. For practical purposes, this is often rounded to 68.4000 inch.

Objects measuring approximately 5.7 foot include a standard full-size refrigerator (e.g., Samsung RF28T5001SR, approx. 5.8 foot tall), a tall wardrobe cabinet (e.g., IKEA PAX Wardrobe, 236cm height, approx. 5.7 foot tall), and a standard 6-foot fiberglass stepladder (e.g., Werner 6 ft Type IA, exactly 6.0 foot tall).

Converting foot to inch is useful for precision engineering where smaller units are required, for detailed architectural drawings, for specifying component dimensions in manufacturing, and for common household measurements where inches provide finer granularity than feet. It is also essential in regions where both units are commonly used, such as the United States.

A simple memory aid is to remember that 1 foot is 12 inches. For 5.7 foot, you can think of 5 feet as 60 inches, and 0.7 foot as 7 tenths of 12 inches, which is 8.4 inches. Adding these gives 68.4 inches. Visualizing a common object like a tall refrigerator or a person's height around 5.7 foot can also serve as a practical reference.