What is 3'9" in cm? The answer is that 3 feet and 9 inches equals 114.3 centimeters.
The conversion formula for feet to centimeters is, cm = ft × 30.48. The conversion formula for inches to centimeters is, cm = in × 2.54.
Based on these conversion formulas. If you want to convert 3 feet, 9 inches to centimeters, you must convert 3 feet to centimeters by multiplying 3 by 30.48. Then multiply 9 by 2.54 to convert 9 inches to centimeters. Finally, add these two results together.
3'9" = (3' × 30.48) + (9" × 2.54)
= 91.44 cm + 22.86 cm = 114.3 cm