Is a 15.5 inch viola the same size as a 4/4 violin?

I'm looking for a case for my 15.5" viola, but the only awesome ones seem to be for violins. The original case for my viola was a rental case, and had both 15.5" and 4/4 on it. So are 15.5" violas the same size as 4/4 violins? Would a 4/4 violin case work for my 15.5" viola? Thanks in advance!

Is a 15.5 inch viola the same size as a 4/4 violin?
Bring in the viola and see if it fits

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