Conversion formula

The conversion factor from millimeters to inches is 0.039370078740157, which means that 1 millimeter is equal to 0.039370078740157 inches:

1 mm = 0.039370078740157 in

To convert 300 millimeters into inches we have to multiply 300 by the conversion factor in order to get the length amount from millimeters to inches. We can also form a simple proportion to calculate the result:

1 mm → 0.039370078740157 in

300 mm → L_(in)

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

L_(in) = 300 mm × 0.039370078740157 in

L_(in) = 11.811023622047 in

The final result is:

300 mm → 11.811023622047 in

We conclude that 300 millimeters is equivalent to 11.811023622047 inches:

300 millimeters = 11.811023622047 inches

Alternative conversion

We can also convert by utilizing the inverse value of the conversion factor. In this case 1 inch is equal to 0.084666666666667 × 300 millimeters.

Another way is saying that 300 millimeters is equal to 1 ÷ 0.084666666666667 inches.

Approximate result

For practical purposes we can round our final result to an approximate numerical value. We can say that three hundred millimeters is approximately eleven point eight one one inches:

300 mm ≅ 11.811 in

An alternative is also that one inch is approximately zero point zero eight five times three hundred millimeters.

Conversion table

millimeters to inches chart

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