How to convert feet and inches to decimal feet?

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What is the proper way of converting feet inches to decimal feet?

For example

15 ft - 4, 1/8 inch = 15.34'

I understand that the 15 get's moved but how do you take 4 1/8" and turn that into 0.34?

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2 Answers

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Got it worked out.

15 ft - 4 1/8 in = 15.34 ft

15 ft get's moved over so we have 15

Now we convert the inches to ft

4+(1/8) = 4+0.125 = 4.125

Now we convert that into ft by dividing it by 12 as 12 in = 1 ft

4.125 / 12 = 0.34375'

And now let's convert it to 2 decimal points.

0.34375 = 0.34'

And for the final let's take the original 15 ft and add it up.

15 + 0.34 = 15.34' (15.34 ft)

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There are $12$ inches in a foot, so $4.125$ inches$=4.125$ inches $\frac {1\text { foot}}{12 \text { inches}}=00.34375 \text { feet}$

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