Roman letters for numbers, known as Roman numerals, form one of history’s most enduring numerical systems. Originating in ancient Rome, these symbols — I, V, X, L, C, D, and M — replaced early tally marks and shaped centuries of trade, architecture, and education. Even today, they appear on clocks, royal titles, movie sequels, and monuments. This article explores how to read, write, and understand Roman numerals, their fascinating history, simple conversion rules, and why they continue ...