Feet and Inches to Single Length

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Feet and Inches to Single Length Calculation:

  • ft =

    Feet of input measure or blank

  • in =

    Inches of input measure or blank

  •  u =

    Definition of value2

  •  a =

    Output length measurement converted to selected units

  •

    Choose the number of decimals to show in your answer. This is also known as significant figures. Select an appropriate amount of significant figures based on the precision of the input numbers.

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Feet and Inches to Single Length Formula

Convert feet and inches into a single measurement. The approach used below is to simplify the work by converting feet to inches then adding the two numbers together. Apply a single conversion factor to converter inches to the desired units.

measurement = (ft * 12 + in) * factor

Feet and Inches to Single Length Variables

Given an input of feet and/or inches one of many possible conversion factors are required to complete the calculation.

Feet (ft)
Input number of feet to convert.
Inches (in)
Input number of inches to convert.
Answer units (a): Centimeters (cm)
Conversion factor for inches to centimeters: 2.54
Answer units (a): Meters (m)
Conversion factor for inches to meters: 0.0254
Answer units (a): Millimeters (mm)
Conversion factor for inches to millimeters: 25.4
Answer units (a): Inches (in)
Conversion factor for inches to inches: 1
Answer units (a): Feet (ft)
Conversion factor for inches to feet: 1/12, decimal 0.08333333333333333 used in calculation
Answer units (a): Yards (yd)
Conversion factor for inches to yards: 1/36, decimal 0.02777777777777778 used in calculation

Feet and Inches to Single Length Solution

Convert a height of 5'11" to centimeters.

  • measurement = (ft * 12 + in) * factor
  • The formula to use for the conversion
  • measurement = (5 * 12 + 11) * factor
  • Substitute in the values of 5 feet and 11 inches
  • measurement = 71 * factor
  • Calculate the total number of inches in the measurement
  • measurement = 71 * 2.54
  • Use the conversion factor of 2.54 to convert inches to centimeters
  • measurement = 180.34
  • Multiplied by the conversion to get the measurement in centimeters
  • 180.34 cm

A person who is 5'11" tall is the same height as a person who is 180 cm tall (rounded).

Feet and Inches to Single Length Example

Convert 9 feet and 4 inches to yards.

  • measurement = (ft * 12 + in) * factor
  • measurement = (9 * 12 + 4) * factor
  • measurement = 112 * factor
  • measurement = 112 * (1/36)
  • ~3.111

A length of 9 feet and 4 inches is approximately 3.111 yards, rounded to three decimal places.

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Inch conversions for many length units