How to Write Birthdays in Roman Numerals

Familiarize Yourself with the Roman Numeral System

Step 1

Step 1

Begin by learning the numbers of the Roman numeral system. Unlike Arabic numerals, which are the numbers we know as 1-10, Roman numerals are represented as letters, and there are only seven of them. I equals 1 V equals 5 X equals 10 L equals 50 C equals 100 D equals 500 M equals 1000

Step 2

Step 2

Roman numbers begin with I, which equals the number 1. Since there is no individual Roman numeral for the number 2, it's represented by the combination of 2 symbols for the number 1, or II (I+I=II). This guideline caries throughout the Roman number system as you'll see as you continue counting. III=3 (1+1+1) IV=4 (1 before 5=4) V=5 VI=6 (5+1) VII=7 (5+2) VIII=8 (5+3=8) IX=9 (1 before 10=9) X=10 A number can only be repeated three times, as in the case of the Roman numeral for 8, VIII, which features the symbol for 5 (V) and 3 symbols for the number 1(I). This is so that the number is still manageable. Just think back to the Roman times when so much was carved in stone or painstakingly written on paper! Streamlining numbers saved a lot of time and effort.

Step 3

Step 3

When reading Roman numerals, add the numbers together if the value of the first number is larger than the second number. Take for example, VII, the Roman number for 7. Since the first number, V, equals 5, and the second and third numbers equal the number 1, the three numbers are added together. 5+1+1 = 7, or VII.

Step 4

Step 4

Subtract the value of the first number from the second number if the value of the first number is smaller than the second. For example, IX, the Roman numeral for 9, features the symbols for 1 and 10, but since the first letter is smaller it's subtracted from the second letter. Thus it reads 1 before 10 which equals the number 9, or IX in Roman numeral.

Step 5

Step 5

Remember that when it comes to dates, Roman numerals denote only years, not months or days. Still, for the sake of your birthday or a friend's birthday, you can write the date by using the Roman numeral for the month, date and year of the birthday separated by backslashes. For example, 09/20/1981 would be written IX/XX/MCMLXXXI. Other ways the birthday could be written are September 20, MCMLXXXI or even September XX, MCMLXXXI.
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