Converting Metres to Feet and Fractional Inches in Construction

 Have you ever wondered about converting Metric and Imperial units. In some cases it's pretty easy. You can even use an online converter. Other times it's a pain. Say you have a measurement in metres and then you need to convert that into feet and inches and even worse, fractional inches. So let's say we start with a measurement like 9.45m how many feet, inches and fractional inches are in that value.

1/ First step, the easy one, is to convert to decimal feet. (3.2808 is the number of feet in a metre.)

9.45m x 3.2808 = 31.10236 ft

That you can do on a calculator, or using an online converter.

2/ Second, is you want to take the remainder and convert that into decimal inches. At this point our decimal is in feet so we are going to convert decimal feet into decimal inches. (12 is the number of inches in a foot)

0.10236 ft x 12 = 1.22832 in

3/ Third step is to convert the decimal inches into fractional inches. Before you do that you have to ask yourself how you are going to use this measurement. If you are going to use this outdoors in some sort of landscaping then you might just round off the inch value to the closest inch, in this case 1". But say you need this value to the closest 1/8" for some application on the inside of a building. Again we will use the remainder and multiply it by 8/8. (8/8 is equal to 1 so you are not changing the value, just how it appears.)

0.22832 x 8/8 = 1.82656/8 

4/ Fourth, we will do some rounding and reduction. 

round 1.82656/8 to 2

our fraction now appears as follows 2/8

which we reduce to 1/4

5/ Finally, we combine everything together.

31' - 1 1/4"

Try a few on your own.