convertion fraction to mm

[rafterrat_2005]

  I can't remember ware I saw it so am asking. What is the formula to go from fractions to mm. I'm working on the BLUENOSE

 

  by M.S. and they are using fraction, I am having trouble measuring the little fraction (38's x 64th). this is what I means and changed to mm (4mm x 27mm ). can some one please help me. They didn't teach millimeters when I was in school. 

[jburchfield1@wowway.com]

Maybe this can help.

 

http://www.advantagefabricatedmetals.com/conversionchart.html

 

Another possiblity.  Don't know where you live, but I bought a digital micrometer at Harbor Freight for $8.00 that reads out in fraction, decimal, and mm.

Edited September 19, 2014 by Pops

[jud]

First do as your computer does, reduce fractions to decimal units, then convert.

jud

Edited September 19, 2014 by jud

[Jay 1]

1. Divide fraction numerator by its denominator.

2. Multiply #1 result by 25.4

 

Example: 1/4"

1. 1 divided by 4 = 0.25

2. 0.25 x 25.4 = 6.35 mm

 

Cheers,

Jay

[mgdawson]

Hi All

 

Some people might be interested in an app for iPhone called ShopCalc which appears to be designed for carpenters, among other things it converts between fractional inches, decimal inches and metric for length, area & volume as well as basic calculator functions + - / x in whatever units you're working with or converting to.

 

Perhaps someone familiar with Anroid can check if there's something similar available for that environment.

 

Mark

[Keith_W]

Just go to google and type "1/32" into mm". That's it.

[*Hans*]

I wish the USA would join the rest of the world and go decimal.

 

Nice wish, but if it will come true?

 

Is Australia decimal?

[Keith_W]

Nice wish, but if it will come true?

 

Is Australia decimal?

Australia uses metric. AFAIK the only country in the world to use Imperial units is the USA and maybe some US territories and colonies - e.g. Liberia, Guam, Marshall Islands (but i'm not even sure about those).

[jud]

Being a surveyor I have used decimal feet for years and I use decimal feet when fabricating in the shop. I am forced to switch to decimal inches for small stuff because I haven't found any micrometers and such in decimal feet. Anyway decimals in a base 10 system work well and switching to metric which uses different names for decimal parts of a meter is the same. Besides needing two sets of wrenches to work on my pickup is a pain, think it was around 1975 when we were  to switch to the metric system in this country, we were putting decimal feet as we always did after the days of chains and also meters on our plats without problem but we are a nation lacking in the ability to change to things that make sense and do well changing to things that don't.

jud.

Edited September 20, 2014 by jud

[jdbradford]

Wait a minute, we are on the Dewey decimal system.  Maybe you meant that we should go to metric?

 

Jeff

[HIPEXEC]

25.4 is the magic number

[dgbot]

At work I had to work standard, dec, and mm. It depends on who our customers were.

David B

[RichardG]

My childhood in England was feet and inches. Then changing to metric as an adult. I then move to the US and am back to imperial. I find I work in fractional imperial and decimal metric - very confusing. I'm taking 1/4" x 1/16" strip and measuring a millimeter length.

 

BTW, there is a scale calculator app available for Android called Scale Calc.

[captainbob]

To convert:  Dimension in inches X 25.4 = mm

                      Dimension in mm X .03937 = inches

 

Bob

Edited September 20, 2014 by Cap'n'Bob

[*Hans*]

It is quite confusing, and once learned one system, you never get really used to the other system. 

 

Then there is the other "problem" that it almost never is a round number.  F.i. 1/16" is 1,5875 mm - which is not common when you want to buy wood f.i.  

Here you take 1,5 or 2 mm....