4 inches in decimeters

Result

The conversion result is: 4 inches is equivalent to 1.016 decimeters.[1]

Conversion formula
How to convert 4 inches to decimeters?

We know (by definition) that: 1 in = 0.254 dm.

We can set up a proportion to solve for the number of decimeters.

1 in / 4 in = 0.254 dm / x dm

Now, we cross multiply to solve for our unknown x:

x dm = (4 in / 1 in) * 0.254 dm → x dm = 1.016 dm

Conclusion:

4 in = 1.016 dm

Conversion in the opposite direction

The inverse of the conversion factor is that 1 decimeter is equal to 0.984251968503937 times 4 inches.

It can also be expressed as: 4 inches is equal to 1 / 0.984251968503937 decimeters.

Approximation

An approximate numerical result would be: four inches is about one point zero two decimeters, or alternatively, a decimeter is about zero point nine eight times four inches.

Footnotes

[1] The precision is 15 significant digits (fourteen digits to the right of the decimal point).

Results may contain small errors due to the use of floating point arithmetic.