Five feet eleven inches equals seventy-one inches total. Multiply 71 by 2.54 centimeters per inch: 71 × 2.54 = 180.34 centimeters. Convert centimeters to meters by dividing by 100: 180.34 ÷ 100 = 1.8034 meters. Rounded to typical precision, 5'11'' is 1.80 m (to two decimals) or 1.803 m (to three decimals). Both figures are acceptable for height conversions internationally.