# Convert feet and inches to inches

In the first part of the formula, feet are extracted and converted LEFT and FIND like this:

Working from the inside out, FIND is used to locate the position of the single quote (') in the string. This number (minus one) goes into the LEFT function as the number of characters to extract. For cell B5, LEFT returns 8, which is then multiplied by 12 to get inches.

*Note: LEFT will return text, but multiplying by 12 will covert the text a number.*

In the second part of the formula, we extract the inches part of the text value with this:

SUBSTITUTE(MID(B5,FIND("'",B5)+1,LEN(B5)),"""","")

Here we again locate the position of the single quote (') in the string with FIND. This time however we add one, and feed the result into the MID function as the starting point for extracting characters.

For the number of characters to extract, we cheat and use the LEN function. LEN will return the total characters in B5, which is a larger number than exist after the single quote in the string. however, MID will simply extract all remaining characters. For B5, MID will return " 4""", which goes into the SUBSTITUTE function as text.

SUBSTITUTE is configured to look for a double quote ("""") and replace with nothing (""). In the case of B5, SUBSTITUTE returns " 4" as text, which is added to the feet number already determined. As before, the math operation converts the text a number, and Excel returns a final result of 100.

### Other units

Once you have the measurement in inches, you can use the CONVERT function to convert to other units of measure.

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