Entering different units while using Revit natively

We know that each Revit project has a Unit setting (Manage – Project Units).  This dictates the default entry units (while typing the Length of a wall, for example.)

However, what if you want to enter a different type of unit without changing the Project Units all the time?

Revit natively understands a number of different unit types, and it will transparently convert them into the appropriate Project Units for you.  All you have to do is type xxx SUFFIX, where xxx is the unit you want to convert, and SUFFIX is the type of unit it is.

Here is a list of the natively supported units of Length (that I know of):

mm
cm
m


(Shift+apostrophe) 
in
      Note – you can also use 2 apostrophes (foot marks) for inches –(via @DBCdoug on Twitter)

How do you insert feet? Use the apostrophe (next to Enter key):

What about a combined feet-and-inches unit?  Yes, you can!  You can use a dash to divide the two (but you don’t have to).  Here are some possible combinations that work:
2′-7in
2′-7″
2’7in
2’7″

These can all be entered WITH or WITHOUT a space.  For example:
12cm
12 cm

Interestingly, the ft suffix does not work for feet UNLESS you have it combined with inches, at least on Revit 2011 / 2012.  For instance:
2ft DOES NOT WORK
2ft-0in DOES WORK

Crazy!  Even:
2ft0 DOES WORK

Where in Revit can you use these inbuilt conversions?  You will most likely use them in direct entry locations (while drawing a wall, for instance), or in the Options Bar:

Direct entry

Options Bar

If you have any other tips on Unit entry, feel free to comment.

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AnonymousLuke Johnsontucker_archWT Recent comment authors
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WT
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What about just 2 7 for 2'-7"? You don't need the ' or the ".

tucker_arch
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tucker_arch

My firm has a mix of US (Imperial) and International (Metric). Being that we did not want to create two or more unique libraries because of differing units; it was decided to leverage the existing Imperial library when allowable. This works for most systems of families (casework) but does not always due to standards, practices or availability. You can use the same base family but have multiple units in a Type Catalog. The base unit in our catalog is inches, so when we have a metric type we just add a xxx mm. If you add some additional yes/no parameters… Read more »

Luke Johnson
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WT – I think your method would work only on a Project with units set to feet and inches.

The methods I describe all work regardless of what the Project units are set at.

Luke Johnson
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tucker_arch – Cool tip on the multi-unit Type Catalog!

However, if the Project Units are set at mm then if you type in '2' it will just be 2 mm. See comment to WT above.

Anonymous
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Anonymous

When entering inches you can use two single apostrophes in lieu of the double apostrophe. I find it faster than using the shift key.