Roman Numerals 1 to 20 - Complete List
All Roman numerals from 1 to 20 (I to XX). This range introduces the key subtraction pattern: IV (4) and IX (9). Click to copy.
Great for learning the subtraction rule: IV = 4 (one before five) and IX = 9 (one before ten).
| Number | Roman | |
|---|---|---|
| 1 | I | |
| 2 | II | |
| 3 | III | |
| 4 | IV | |
| 5 | V | |
| 6 | VI | |
| 7 | VII | |
| 8 | VIII | |
| 9 | IX | |
| 10 | X | |
| 11 | XI | |
| 12 | XII | |
| 13 | XIII | |
| 14 | XIV | |
| 15 | XV | |
| 16 | XVI | |
| 17 | XVII | |
| 18 | XVIII | |
| 19 | XIX | |
| 20 | XX |
📚 Mastering Roman Numerals 1-20
The 1-20 range introduces the repetition pattern. After 10 (X), simply add I: XI (11), XII (12), XIII (13). The number 19 (XIX) shows how subtraction works with larger numbers: X + IX = 10 + 9. This range covers 90% of uses on clocks and short lists.
⭐ Key Numbers 1 to 20
📝 Step-by-Step Examples
💡 Fun Facts
Super Bowl LVIII (58) in 2024 was the most recent event prominently using Roman numerals.
Queen Elizabeth II reigned for 70 years. Her name in Roman: ELIZABETH II.
Movies use Roman numerals in credits to avoid looking "dated" by the year.
🎯 Applications of I to XX
Super Bowl XX (20) marked a historic milestone. Louis XIV, XV, XVI were famous French kings. Hours on Roman clocks use I-XII. Book chapters frequently use I-XX for prefaces and appendices.
🔗 Explore More Roman Numerals
⭐ Popular Conversions
Frequently Asked Questions
How do you count to 20 in Roman numerals?
Count to 10 (I-X), then add X for teens: XI (11), XII (12)... up to XX (20).
What is 15 in Roman numerals?
15 is XV, which means X (10) + V (5) = 15.
What is 19 in Roman numerals?
19 is XIX: X (10) + IX (9) = 19. Note IX uses subtractive notation.