1 1/4 inches to decimal 1 1/4 inches is inches as a mixed number. Here we will teach you how to convert 1 1/4 inches to decimal, and as an added bonus you will also learn how to convert 1 1/4 inches to decimal foot.

We start by labeling the numbers in 1 1/4 inches as follows: 1 1/4 inches = W N/D inches and then we use the mixed number inches to decimal formula displayed below to convert the mixed number inches to decimal inches:

((W x D) + N) / D

Looking at our labels and the formula, you see that W equals 3, N equals 2, and D equals 3. Therefore, when we enter 1 1/4 inches into our formula we get this:

((1 x 4) + 1)/4
= 1.25 inches

Thus, 1 1/4 inches to decimal is 1.25. Moving on, note that there are 12 inches in a foot. Therefore, to convert 1 1/4 inches to foot, you simply divide the above decimal answer by 12 like so:

1.25 / 12
= 0.104166667 foot

That's it folks. In summary, 1 1/4 inches is the same as 1.25 inches and 1 1/4 inches is also the same as 0.104166667 foot.

Inches to Decimal Calculator
Please enter another length of inches below for us to convert to decimal. You can enter a number (a.a), a fraction (a/b), or a mixed number (a b/c) similar to 1 1/4 like we calculated on this page.

1 1/5 inches to decimal
Here is the next length of inches that we have converted to decimal.

More information: You may have correctly concluded that W = Whole Number, N = Numerator, and D = Denominator. In addition to using the formula above to convert 1 1/4 inches to decimal, you can actually use it to convert any mixed number to a decimal number.