Century Converter
Enter a year (1–3999) to see its Roman numeral, century, century in Roman numerals, and millennium.
Examples: 1900 → 19th century · 2000 → 20th · 2001 → 21st · 2026 → 21st
Boundary reminders
- Years 1–100 belong to the 1st century.
- 1900 is the 19th century; 1901 begins the 20th.
- 2000 is the 20th century; 2001 begins the 21st.
Full table: centuries in Roman numerals. Year pages: year tools.