What is 3'3.5" in inches? The answer is that 3 feet and 3.5 inches equal 39.5 inches.
The conversion formula for feet to inches is in = ft × 12. Based on this conversion formula, to convert 3 feet and 3.5 inches to inches, you need to multiply 3 feet by 12 to convert to inches, and then add 3.5 inches to this result.
3'3.5" = (3' × 12) + 3.5"
= 36" + 3.5" = 39.5 inches