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Roman Numerals 1-10 (1 to 10)
Roman numerals 1 to 10 are I, II, III, IV, V, VI, VII, VIII, IX, X. This reference shows each number with its numeral and how the subtractive pairs work (IV = 4 is 5 − 1, IX = 9 is 10 − 1), plus a converter for any number up to 3999 — all in your browser. Learning 1–10 covers the building blocks: I (1), V (5) and X (10).
Quick answer
1–10: I, II, III, IV, V, VI, VII, VIII, IX, X
- IV = 4 (5 − 1), IX = 9 (10 − 1)
- Subtractive notation, not IIII
Frequently asked questions
What are the Roman numerals from 1 to 10?
I, II, III, IV, V, VI, VII, VIII, IX, X. Note IV = 4 and IX = 9 use subtraction, not IIII/VIIII.
Why is 4 written IV and not IIII?
Standard notation avoids four repeats by subtracting: IV = 5 − 1. (Clock faces sometimes use IIII, but IV is standard.)