Roman Numerals Chart

The following charts give the Roman Numerals from 1 to 1000.

• Roman Numerals Conversion Worksheets

  Roman to Decimal
  Roman to Decimal (up to 10)
  Roman to Decimal (up to 20)
  Roman to Decimal (up to 50)
  

  Roman to Decimal (up to 20)
  Roman to Decimal (up to 70)
  Roman to Decimal (up to 150)
  Roman to Decimal (up to 550)
  Roman to Decimal (up to 1500)
  

  Decimal to Roman
  Decimal to Roman (up to 20)
  Decimal to Roman (up to 70)
  Decimal to Roman (up to 150)
  Decimal to Roman (up to 550)
  Decimal to Roman (up to 1500)
  

How To Read Roman Numerals?
Roman numerals are read from left to right.
The symbols for the Roman Numerals are:
I = 1, V = 5, X = 10, L = 50, C = 100, D = 500, M = 1,000.
Some special numerals are:
IV = 4, IX = 9, XL = 40, XC = 90, CD = 400, CM = 900.

Rules for Roman Numerals

1. Additive Rule:
   If a smaller numeral follows a larger one, add them.
   Example:
   VI = 5 + 1 = 6
   XV = 10 + 5 = 15
   
2. Subtractive Rule:
   If a smaller numeral appears before a larger one, subtract it.
   This rule has specific limitations:
   I can only precede V (4) and X (9).
   X can only precede L (40) and C (90).
   C can only precede D (400) and M (900).
   V, L, and D are never subtracted.
   Example:
   IV = 5 − 1 = 4
   IX = 10 − 1 = 9
   
3. Symbol Repetition:
   I, X, C, M can repeat up to 3 times.
   Example: III = 3, XXX = 30
   The subtractive principle should be used for values like 4 (IV) and 9 (IX) instead of IIII and VIIII.
   V, L, D cannot repeat.
   
4. Larger Numbers:
   A bar over a numeral multiplies it by 1,000.

Roman Numerals Explained With Many Examples
Basic introduction into roman numerals.
How to convert a number into a roman numeral?
How to convert a roman numeral into a number?
Examples and practice problems.
How to express a year as a roman numeral?

• Show Video Lesson

Roman Numerals
What each of the seven letters (I, V, X, L, C, D and M) mean and their Arabic number equivalent?
How we use these seven letters to add numerals together in order to make larger numerals?
How to subtract Roman numerals in order to represent smaller values?

• Show Video Lesson

How To Decode Roman Numerals?

• Show Video Lesson

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