AutoCAD 2010/2011/2012

AutoCAD 2010/2011/2012

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Member
jessicaklutz
Posts: 3
Registered: ‎03-07-2010
Message 1 of 16 (10,801 Views)

Converting file from imperial to metric

10801 Views, 15 Replies
03-07-2010 02:08 PM
I have an old autocad file that was given to me by my instructor. I do not know how to convert it from imperial to metric using Autocad 2010. Help regarding this would be greatly appreciated.

Jessica
*R.K. McSwain
Message 2 of 16 (10,796 Views)

Re: Converting file from imperial to metric

03-07-2010 02:16 PM in reply to: jessicaklutz
jessicaklutz wrote:
> I have an old autocad file that was given to me by my instructor. I
> do not know how to convert it from imperial to metric using Autocad
> 2010. Help regarding this would be greatly appreciated.
>
> Jessica

Define "convert".
Drawing entities are constructed in units. Those units can be whatever
you want.
So if you have a line that is one unit long, it can be one inch, one
foot, one meter, etc.

On the other hand if you have a line that represents one foot long and
you want to dimension it in meters (0.3048 meters), you can do this by
setting a scale factor in the dimension style.


--
R.K. McSwain
http://cadpanacea.com
Member
jessicaklutz
Posts: 3
Registered: ‎03-07-2010
Message 3 of 16 (10,796 Views)

Re: Converting file from imperial to metric

03-07-2010 03:24 PM in reply to: jessicaklutz
To clarify, I mean how to convert the dimensioning. I have files that have all of the dimensioning already done. They are plan drawings just showing different lengths. I realize I can add a scale factor to change them all from imperial to metric. I am wondering if there is a way to do so easily, of if it will involve me re-typing all values. Ultimately I would like to be able to just add a scale factor that would change all values from imperial (units are displayed for example as 9' 4 1/2" and I would like mine in millimeters)

Thank you for your help. I am very unfamiliar with autocad (especially 2010)
*Nathan
Message 4 of 16 (10,796 Views)

Re: Converting file from imperial to metric

03-07-2010 04:18 PM in reply to: jessicaklutz
Do you want output (print) to display mm or are you wanting to work in a
metric file?

wrote in message news:6350284@discussion.autodesk.com...
To clarify, I mean how to convert the dimensioning. I have files that have
all of the dimensioning already done. They are plan drawings just showing
different lengths. I realize I can add a scale factor to change them all
from imperial to metric. I am wondering if there is a way to do so easily,
of if it will involve me re-typing all values. Ultimately I would like to be
able to just add a scale factor that would change all values from imperial
(units are displayed for example as 9' 4 1/2" and I would like mine in
millimeters)

Thank you for your help. I am very unfamiliar with autocad (especially 2010)
*Bill Gilliss
Message 5 of 16 (10,796 Views)

Re: Converting file from imperial to metric

03-07-2010 07:03 PM in reply to: jessicaklutz
On 3/7/2010 6:24 PM, jessicaklutz wrote:
> To clarify, I mean how to convert the dimensioning. I have files that have all of the dimensioning already done. They are plan drawings just showing different lengths. I realize I can add a scale factor to change them all from imperial to metric. I am wondering if there is a way to do so easily, of if it will involve me re-typing all values. Ultimately I would like to be able to just add a scale factor that would change all values from imperial (units are displayed for example as 9' 4 1/2" and I would like mine in millimeters)
>
> Thank you for your help. I am very unfamiliar with autocad (especially 2010)
>
It's time to explore alternate dimensioning units.

When you edit a dimension style, the Alternate Units is, I think, the
one on the far right. Just check the Enable Alternate Units box and save
the style. Millimeters should be the default alternate unit already; if
not, the multiplier is 25.4 to show ft-in and mm at the same time. I do
this with manufacturing plants that have the structure in imperial units
and the machinery in metric -- I just provide both dimensions for
everything.
Member
jessicaklutz
Posts: 3
Registered: ‎03-07-2010
Message 6 of 16 (10,796 Views)

Re: Converting file from imperial to metric

03-08-2010 11:52 AM in reply to: jessicaklutz
I am looking not only to display metric units, but also to work in them.

I will try to find this alternate unit check box...
*A+P
Message 7 of 16 (10,796 Views)

Re: Converting file from imperial to metric

03-08-2010 08:38 PM in reply to: jessicaklutz
If you want to work in Metrics (mm) then you'll have to check to see how the
original user drew the Imperial unit.
When referring to Architectural drawings, typically this can be checked by
using the Dist command to measure the width of a door drawn in the file. If
the measurement shows 3 then most likely it's drawn 1 unit = 1 foot.
But if the measurement shows 36 then most likely it's drawn 1 unit = 1 inch.

Assuming 1 unit = 1inch then just use the Scale command and select All
objects and scale it up by the 25.4 conversion factor since 1 inch = 25.4
mm.

But keep in mind that the standard sizes for Imperial units are not the same
as in Metrics.
For example a standard door of 36" in Imperial when scaled to Metrics =
36"x25.4 = 914.4mm.
914.4mm is not a standard door in Metrics but rather 900mm.

Paul

wrote in message news:6350816@discussion.autodesk.com...
I am looking not only to display metric units, but also to work in them.

I will try to find this alternate unit check box...
*Pro
Modman_4
Posts: 2,699
Registered: ‎04-14-2009
Message 8 of 16 (10,796 Views)

Re: Converting file from imperial to metric

03-09-2010 07:20 AM in reply to: jessicaklutz
1. Start with an existing imperial dimension style, using dimstyle. Choose New. Give it a new name related to your metric units.
2. On the Primary Units tab, pick Decimal for the units format, select the precision (2 decimal places), and put in the measurement scale factor you'll need for metric conversion of the dimension. Type in what you're using for a suffix (eg. mm). No need for alternate units.
3. Now save and close that and the Dimension Style Manager, and do a random dimension anywhere (using the new dimension), on the dimension layer you use, of course.
4. Now do either one of two things: a) use Property Painter to convey the new dimension's properties to all of the other dimensions, or b) Edit -> Select All and in the Properties palette choose just the dimensions and change them all at one time to the new dimension style.

Now you have an imperial drawing that has been redimensioned in metric units. :-)
I hope my info was useful, but if by some odd chance it actually solved your issue, feel free to mark your post as "Accept as Solution". Thanks! :smileyhappy:
Active Member
tnga
Posts: 10
Registered: ‎03-18-2010
Message 9 of 16 (10,797 Views)

Re: Converting file from imperial to metric

03-19-2010 11:52 AM in reply to: jessicaklutz
1. Open dimension style manager
2. Click new
3. Modify
4. primary units:
Unit format:---------Decimal
Precision------------0.00 ?
Scale factor---------1.00

Click Alternate Units:
Unit format----------Decimal
Multipuer to all units ----------.03937

5. Now you can covert from mm to inch ( dim 60mm = 2.3622= 2-3/8")
New Member
dan_alcantara
Posts: 2
Registered: ‎09-08-2008
Message 10 of 16 (10,437 Views)

Re: Converting file from imperial to metric

02-24-2011 12:19 AM in reply to: *A+P

Simple way to convert imperial drawing to metric:

1. Click the main menu (the autocad logo on the uppermost left corner) then Drawing Utilities then Units.

    Change the Lenght Type from Architectural to Decimal and the Insertion Scale to any metric unit you want to use.

     OK and save.

 

2. You can then convert/edit the dimensions to metric. 

    Or create a new dimension style.  In the Dimension Style Editor make set Primary Units - Unit Format to Decimal.

    Set up all other necessary settings.  Ok and set your new dimstyle as Current.

 

3. In your drawing draw the new dimstyle you created and match properties to all existing dimensions.

 

Note:  Since there is slight discrepancy between imperial and metric system you can scale the whole drawing to make it exact according to metric system.

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