Inventor General Discussion

## Inventor General Discussion

Active Contributor
Posts: 29
Registered: ‎02-01-2008
Message 1 of 41 (8,476 Views)

# How to convert from mm to Inches

8476 Views, 40 Replies
02-12-2008 02:35 PM
If I have something that was designed in mm and should be in inches, how do you convert it. What I mean is, I have a part that should be 26 inches long but it is 26mm long. Is there a way to convert all the measurements.
*Expert Elite*
Posts: 26,270
Registered: ‎04-20-2006
Message 2 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

02-12-2008 02:48 PM in reply to: gphillips
You might be able to go into Parameters and multiply all of the dimensions or change all of the units. And Tools>Document Settings>Units tab.

Another method would be to Derive Component into a new part with Scale (I would only use this method if the part dimensions are set in stone).
Please mark this response as "Accept as Solution" if it answers your question.
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Message 3 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

02-12-2008 02:54 PM in reply to: gphillips
There isn't a "fix this problem" command that will specifically convert a
metric part to the eqivalent numer of inches. One millimeter is 0.03937
inches so multiplying 1 mm by 25.4 would give you 1 inch.

If you open an empty part file (use the inch template) exit sketch and then
use the DERIVE COMPONENT command and apply a scale factor of 25.4 you ought
to get in the ballpark. The problem will be in the significant digits of
precision. You'd be better using 25.40000048 but even that will likely
result in some "noise" out in the area where engineers don't care but
computers do...

--
Gary R. Smith
Autodesk Inventor Team
Portland, OR
2.33GHz 2GB IBM ThinkPad T60p; XP pro SP2
ATI Mobility FireGL V5250 driver: 8.293.1.0
*Gary R Smith \(Autodesk\)
Message 4 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

02-12-2008 02:56 PM in reply to: gphillips
"...metric part to the eqivalent numer of inches..."

add missing u and b as required... :-(
Active Contributor
Posts: 29
Registered: ‎02-01-2008
Message 5 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

02-12-2008 03:19 PM in reply to: gphillips
Thank you so very much Gary. That worked perfectly.
Contributor
Posts: 11
Registered: ‎12-22-2009
Message 6 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

12-22-2009 08:58 AM in reply to: gphillips
I have a similiar problem. Our company is to take control of 1500 to 2000 2004 Autocad dwgs. They will be in metric. I have been asked if they can be converted to inches. How would you approach this? I am using Inventor 2010 Pro.
Thanks
Steve
Valued Mentor
Posts: 1,195
Registered: ‎10-07-2003
Message 7 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

12-22-2009 09:23 AM in reply to: gphillips
When you say 'Autocad dwgs', do you mean 2-d drawings? Do you mean they are dimensioned in metric?

-Paul Cunningham
Paul Cunningham
IV2008
Contributor
Posts: 11
Registered: ‎12-22-2009
Message 8 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

12-22-2009 09:27 AM in reply to: gphillips
Yes. They will be 2D and dimensioned in metric.
Valued Mentor
Posts: 1,195
Registered: ‎10-07-2003
Message 9 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

12-22-2009 09:32 AM in reply to: gphillips
Your situation is diffeent from the original post.

What are you going to do with the dwg's in Inventor?
Paul Cunningham
IV2008
Contributor
Posts: 11
Registered: ‎12-22-2009
Message 10 of 41 (8,476 Views)

# Re: How to convert from mm to Inches

12-22-2009 09:36 AM in reply to: gphillips
They will become our product and we will control the design. I just purchased Inventor last month.

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