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Conversion tables

Discussion in 'General Talk' started by Colin Mccourt, Apr 17, 2019.

  1. Colin Mccourt

    Colin Mccourt Journeyman
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    When looking online and previewing example videos and tutorials they often work in inches especially our American counterparts although I can work in imperial as well as in metric I prefer to work in mms.. I have trouble with the smaller imperial sizes and end up having to convert them every time I come across a little project I may want to save. Is there a lite conversion chart anywhere on site or otherwise that I could refer to..especially for the smaller sizes e.g.. parts of an inch to metric
    Regards
    C
     
  2. sharmstr

    sharmstr OpenBuilds Team
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  3. sharmstr

    sharmstr OpenBuilds Team
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  4. Colin Mccourt

    Colin Mccourt Journeyman
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    Brilliant many thanks @sharmstr. Off to the laminator.
    Regards
    C
     
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  5. Giarc

    Giarc OpenBuilds Team
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    I just Google "inches to mm" and you can fill in your numbers there - to include fractions. I prefer metric myself even though I am in the U.S. The math is so much easier.

    My youngest son is on the autism spectrum and he refuses to use imperial because he claims it is stupid, inefficient, and makes no sense. I think it is funny, but I have seen the light and agree with him.
     
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  6. sharmstr

    sharmstr OpenBuilds Team
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    LOL.

    I use both the chart and google. Depends on what's closest.
     
  7. Rob Taylor

    Rob Taylor Master
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    It's pretty easy as long as you're comfortable with basic mental arithmetic, don't need exact precision, and keep in mind the standard conversions 0.004" = about 0.1mm. 1mm = about 0.040". 0.125" = 1/8" = 3.2mm. So a thou is a quarter of a tenth of a millimeter, or 25 micron. 1/64 is a quarter of 1/16", which is about 62 thou, so about 15-16 thou, which is obviously 4 times the 4 thou in 0.1mm, so it's about 0.4mm. Which makes sense, because 1mm = about 40 thou, and 1/16 is about 1.5-1.6mm. Getting comfortable with quick mental juggling like this helps you stay focused on content and less trying to figure out what something is in a frame of reference you actually grasp.

    If you need precision, the exact conversion is simply 25.4mm to the inch. Because the inch is actually standardised by the ISO metre, and has been for about a century, thanks to the need for mass manufacturing and interchangeable parts.

    Maybe it helped growing up in a half'n'half country; the UK in the 90s was still pretty imperial, but we did a lot of metric.
     
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  8. sharmstr

    sharmstr OpenBuilds Team
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    All true. But the beauty of google is that its less keystrokes :)
     
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  9. Rick 2.0

    Rick 2.0 OpenBuilds Team
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    I use a phone app. Even less keystrokes than google.
     
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  10. sharmstr

    sharmstr OpenBuilds Team
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  11. Rob Taylor

    Rob Taylor Master
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    Doing it in your head requires no keystrokes at all!

    Unless I'm working precisely. And then I can swipe up my phone calculator in the lockscreen tray and hit "XXXx2.54" much faster than I can hit CTRL+T, "goo", down-down-enter, then type "XXXmm to inches" :cool: :ROFL:
     
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