Convert Foot to Millimeter (ft to mm)

In next fields, kindly type your value in the text box under title [ From: ] to convert from foot to millimeter (ft to mm). As you type your value, the answer will be automatically calculated and displayed in the text box under title [ To: ].


Foot (abbreviation: ft): (plural feet) is a unit of length in the imperial and US customary systems of measurement. Since 1959, both units have been accepted equivalent to exactly 0.3048 meters by international agreement.

Millimeter (abbreviation: mm): is a unit of length in the SI metric system, equal to one thousandth of a metre. Therefore, there are thousand millimetres in a metre and ten millimetres in a centimetre.

How to Convert Feet to Millimeters

Example: How many millimeters are equivalent to 35.1 feet?


1 feet = 304.8 millimeters

35.1 feet = Y millimeters

Assuming Y is the answer, and by criss-cross principle;

Y equals 35.1 times 304.8 over 1

(i.e.) Y = 35.1 * 304.8 / 1 = 10698.48 millimeters

Answer is: 10698.48 millimeters are equivalent to 35.1 feet.

Practice Question: Convert the following units into mm:

N.B.: After working out the answer to each of the next questions, click adjacent button to see the correct answer.

( i ) 67.7 ft

( ii ) 76.97 ft

( iii ) 86.22 ft

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  • USMA
  • NIST

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