According to The Met Museum website, the mosaic *[Emperor Justinian and Members of His Court][1]* measures **104 in. by 144 in. or 264.2cm by 365.8cm, which is 8ft 8in by 12ft**. The same dimensions are given for the mosaic *[Empress Theodora and Members of Her Court][2]*.

Slightly less precise measurements of **8ft 8in by 12ft, or 2m 64cm by 3m 65cm** are given in [this source][3] for both mosaics.

A third source, *[Imperial Gifts][4]*, has both mosaics measure slightly smaller at **8ft 6in by 12ft, or 2m 59cm by 3m 65cm**.

The mosaics face each other in the church's apse and date to approximately 547 AD. More details can be found on The Met's *[Dress Styles in the Mosaics of San Vitale][5]* which also notes that:

> In both portraits, the rulers are dressed to identify themselves with
> the saints and prophets surrounding them in mosaic decoration, and to
> establish their eternal presence among the divine.


  [1]: https://www.metmuseum.org/art/collection/search/466586
  [2]: https://www.metmuseum.org/art/collection/search/466587
  [3]: https://lmcarthur.weebly.com/uploads/4/9/0/0/4900041/chapter_7-2.pdf
  [4]: https://www.baylor.edu/content/services/document.php/253565.pdf
  [5]: https://www.metmuseum.org/exhibitions/listings/2012/byzantium-and-islam/blog/topical-essays/posts/san-vitale