Conversion formula

The conversion factor from millimeters to feet is 0.0032808398950131, which means that 1 millimeter is equal to 0.0032808398950131 feet:

1 mm = 0.0032808398950131 ft

To convert 42.1 millimeters into feet we have to multiply 42.1 by the conversion factor in order to get the length amount from millimeters to feet. We can also form a simple proportion to calculate the result:

1 mm → 0.0032808398950131 ft

42.1 mm → L_(ft)

Solve the above proportion to obtain the length L in feet:

L_(ft) = 42.1 mm × 0.0032808398950131 ft

L_(ft) = 0.13812335958005 ft

The final result is:

42.1 mm → 0.13812335958005 ft

We conclude that 42.1 millimeters is equivalent to 0.13812335958005 feet:

42.1 millimeters = 0.13812335958005 feet

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 foot is equal to 7.2399049881235 × 42.1 millimeters.

Another way is saying that 42.1 millimeters is equal to 1 ÷ 7.2399049881235 feet.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that forty-two point one millimeters is approximately zero point one three eight feet:

42.1 mm ≅ 0.138 ft

An alternative is also that one foot is approximately seven point two four times forty-two point one millimeters.

Conversion table

millimeters to feet chart

For quick reference purposes, below is the conversion table you can use to convert from millimeters to feet