AutoCad 2D :: Make Two Entries Into Table (one In Mm And One In Ft) From One Dimension?

I'm an architect and I'm drawing up a development of 80 houses and I need to provide a Sales Plan which includes the width and length of each rear garden in the development. Rather than show these as actual dimensions on the drawing (which will get messy and make the drawing look untidy due to the large amount of units) I plan to create a simple table with plot number and dimensions.

My plan is to dimension the gardens on a non-printable layer and to insert a field into a table to obtain the required dimension. I've done this for the first few houses but I have to insert one field and then select the dimension to get the "m" dimension and then repeat the process in order to get the "ft" dimension.

My question is is it possible to insert a field (or two separate fields) that will display the dimension once in m (ie 12.80m) and once in 'architectural dimension style' (ie. 41' - 7 1/4") by only clicking on the dimension once??

This will save a lot of time as this size of development is quite common for me.