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20 in Roman Numerals

20 in Roman numerals is XX. It breaks down as XX, which adds up to 20.

  • Roman numeral
    XX
  • Lowercase
    xx
  • Breakdown
    XX
  • In words
    twenty
  • Binary
    10100
  • Hexadecimal
    14

How to write 20 in Roman numerals

Roman numerals are built place by place, from the largest value to the smallest. For 20 the places are 20 (tens).

  1. Write 20 as XX.

Joined together, XX gives XX.

20 digit by digit

PlaceValueNumeralRule used
tens20XXthe symbol repeated twice

Check XX by reading it back

Reading XX from left to right and adding the pieces: XX = 20. Together that is 20, so XX and 20 match.

Mistakes to avoid with XX

  • Never repeat a symbol more than three times in a row. When a fourth would be needed, the subtractive form takes over.
  • Only I, X and C may be placed before a larger symbol to subtract, so XX never contains forms such as VX or LC.
  • Read XX as one number, not letter by letter: add the values left to right, except where a smaller symbol sits before a larger one.

Facts about the number 20

  • 20 is an even number and composite, with prime factors 22 x 5.
  • In binary 20 is 10100 and in hexadecimal it is 14.
  • Written out, 20 is "twenty".
  • The digits of 20 add up to 2.

Where you will see 20 in Roman numerals

The number 20 is written as XX to mark twentieth century events or anniversaries. Clothing brands sometimes use it as a logo element. Fashion houses and historians alike favor these two crossed letters because they are visually striking, easy to reproduce, and carry an air of established tradition.

Numbers near 20

NumberRoman numeral
18XVIII
19XIX
20XX
21XXI
22XXII

FAQ

What is 20 in Roman numerals?

20 is written XX in Roman numerals. It is built from XX (20).

How do you write 20 in lowercase Roman numerals?

Lowercase Roman numerals use the same rules, so 20 is xx. Lowercase is common for page numbers in a book's preface and for outline levels.

How do I convert any number to Roman numerals?

Split the number into thousands, hundreds, tens and ones, write each part with the symbols I, V, X, L, C, D and M, then join them from largest to smallest. Or paste it into the Roman numeral converter, which also converts back.

More roman numerals