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“This fun video. I will show you how to convert metric length of measurement to to inches and fractions of an inch or feet inches. And fractions when in ghent will also do it backwards going from inches or feet inches. And the fraction of an inch good back to metric let s get started with how about metric.
Let s say a person says that his or her height is 185 centimeters. What is 185 centimeters in inches or feet or something that relates to those units of measurement well we know that one inch is exactly twenty five point four millimeters is your conversion factor. And because it is a decimal with only one. Digits it fairly easy to memorize 254.
It doesn t have any more decimal places. It is exactly twenty five point four. So it s a nice and easy round number. So what do we do with this one hundred and twenty five centimeters and so many millimeters now we can do either 185 centimeters is 1850 millimeters and it gets divided by twenty five point four millimeters or we can do 185 centimeters and divided by 254.
Centimeters. Either way. It s going to be the same result. Because that is the same as that let s do 185.
Divided by two point fifty four equals seventy two point eight three four six four five six seven inches. That s nice now we have an inch. Decimal what do we do with an inch decimal 72. Inches.
Plus. 08. Three of an inch. So.
72 inches. Plus. Unless. R.
Plus. 3. 4. Of an inch.
Or so. It s a little more than 3 4. Of an inch. We have an inch decimal we have to convert this is a decimal decimal inch.
We have a decimal value there a decimal inch must be converted to inches. And fractions. So that s 72 inches. And let s make a fraction out of that one how about just for time and simplicity s sake.
We just work with these first four digits. And what we don t have to we can just subtract 72 from the answer and we have all the digits. That we had before without the whole number 272. Let s say we want to make sixteenth of an inch out of this one yeah okay i started with those four digits.
There if we want we can make eight thousand three hundred and forty six over ten hundred thousand ten thousand over ten thousand that s a nice fraction. But it s not on the tape measure. It s not a very useful fracture and the six is an even number and ten thousand is also an even number and at least may only reduce to four thousand and something over five thousand and if it doesn t reduce any further if it doesn t have any lower terms. We are stuck with it so instead of going this route just go with all the decimal digits.
And let s try to make sixteenth out of it to do that you have to multiply all of those decimal digits by 16 and see what we get we get. 13 sixteenth out of it where is the 13 16th. Where this number is going to give you the numerator and this number is your denominator. Now this is thirteen point three now realistically this should be then thirteen point three sixteenths.
But there is no such fraction as thirteen point three sixteenth so we ll just call it a touch more than thirteen sixteenth okay and 72 inches is otherwise exactly six feet. How do we make feet out of it 72. Must be 72 must be divided by 12. Because there s 12 inches in 72 inches.
So sorry. It s 12 inches. In a foot. And that s going to give you 6 feet 0 inches.
And 13 sixteenth of an inch. So if somebody has a height of 185 centimeters. Then it is 6 feet 0 inches. And 13 sixteenth of an inch.
Now be an easy way to do it. Yes. Oopsie just pull a tape measure that has feet on one side until. The camera can focus on this one maybe.
Here. Uh huh feet and inches on one along one edge here they operate and millimeters and centimeters on the lower edge. Here. And let s just go to 185 centimeters and see what we find there and just put it down here.
And we ll zoom in that s easier. Just fell off the end of the vast lair 185 centimeters can be found right about there. Where the arrow. Is pointing.
Mmm hmm. Here is 180. Centimeters and here is 185 centimeters. It is a little over six feet just like we calculated and we calculated thirteen sixteenths of an inch.
So this one is three quarters here three quarters is twelve sixteenth and there is 13 sixteenth is there that line there and that too much lines up with 185 centimeter mark. That s pretty close so. That this conversion. Worked let s zoom out let s do another conversion.
The other way around for example. Somebody says that his or her height is enough five feet of 8 inches. And quarter. How about that five feet eight inches and a quarter now we need to have we need to make inches.
And an inch decimal out of it to make it work five feet is 5 times. 12. That s 60 inches plus. 8.
And 1 4. Equals. 68. And the quarter inches 68.
And a quarter inches for the person s height now that s 68 and a quarter after this. Quarter we need to make a. Decimal we know that quarter inches. 025.
So that s the end of that story. We have an inch decimal 68 point 25. Now once we have the inch decimal the inch decimal gets multiplied by it depends. What we want we do want centimeters let s go for centimeters are multiplied by 2 point.
54 centimeter and see what we get after this 168. Point. 25 times by 254. Equals.
The person site is one hundred and seventy three point three centimeters. But just like we had a little bit of decimal digits with the 1316 that i ignored because it s a microscopic amount the same way let anything anything after this digit. Like we have it on the calculator is a 5 5. That s five hundredths of a centimeter so these are centimeters that s millimeter.
We can find one thousand seven hundred and thirty three millimeters and that would be half a millimeter and another five that s microscopic amount don t worry about it. Let s see if it checks out let s go lets go to 173 centimeters. Which is here 173 point. Three is there this is one thousand seven hundred and thirty three millimeters add this component closer so you can have a better look at this tape here.
There so there is 1733 millimeters. Does it really line up with 68 inches on the quarter. It looks like it does it s pretty close wherever. I made this pencil smudge here.
There s the sixty eight and a quarter mark. I marked it with an arrow. And it s pretty close to one thousand seven hundred and thirty three millimeters is there marked with that arrow. There we go if we really want to go microscopic.
You can see that they actually line up pretty well. Except. That my pencil mark is just a little bit away from the third illah meter line in d. 1733.
Millimeter. Mark. So i m just off with my pencil line a little bit. But so they are pretty close.
I say this conversion works if you don t like doing the math you can just buy yourself a tape and and just use it without doing the math you might or don t need to know how to do it on a piece of paper with a pencil. If you have like a building s length to convert and that s a tricky tape measure to pull that s a pretty click. That s a that s a tricky situation to pull off so that s how to do the math. Fairly straightforward there is your conversion factor just keep in mind are you dividing with it or are you multiplying with it and you have to have inch decimals for a multiplication and after a division.
You have to make out of an inch decimal you have to make some kind of meaningful fraction. So that s basically how to convert a ” ..
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