Roman numerals are a numeral system which was used in Ancient Rome. It uses letters instead of numbers to represent values. You may have seen Roman numerals on clocks and on TV or film credits.

Super Bowl week is back, which means Roman numerals are once again at the forefront of the public consciousness. As one of the only institutions that still uses Roman numerals, the NFL's choice ...

Given the lack of historical ties between the USA and the Romans, it might seem strange that an iconic American event uses Roman numerals. However, there is a very understandable reason for this.