Date to Roman Numerals Converter: Write Calendar Date May-12, 2021 With Roman Numerals (Birthday, Wedding, Marriage, Graduation, Anniversary). Date Format: Month-Day, Year. How To Explanations

Write date May-12, 2021 in Roman numerals

The Roman numerals we are going to use to make the conversion:


I = 1; V = 5; X = 10; M = 1000;

» Roman numerals: basic reading rules

How do we proceed?

Convert, one by one, the numbers that represent the month, the day and the year, to Roman numerals. If the case, break down each number into place value subgroups.


Month, May:

May is the fifth (5th) month of the year.


Replace the name of the month with the corresponding number of the month of the year: 5.


5 = V;


Day, 12:

I = 1; X = 10;

12 = 10 + 2;


10 = X;


2 = 1 + 1 = I + I = II;


12 = 10 + 2 = X + II = XII;


» 12 = XII


Year, 2021:

I = 1; X = 10; M = 1000;

2021 = 2,000 + 20 + 1;


2,000 = 1,000 + 1,000 = M + M = MM;


20 = 10 + 10 = X + X = XX;


1 = I;


2021 = 2,000 + 20 + 1 = MM + XX + I = MMXXI;


» 2021 = MMXXI


Convert calendar dates, write them in Roman numerals

Learn how to convert any calendar date (birthday, wedding, anniversary, celebration, the current day) to Roman numerals. Convert each date component separately, as if they were simple numbers: the month (it is a number between 1 and 12), the day (a number between 1 and 31) and the year (a numbers between 1 and 9999).

1: Break the number down into place value subgroups (decompose it).

2: Convert each subgroup.

3: Wrap up (construct) the Roman numeral.

The latest calendar dates converted, written using Roman numerals

The calendar date May-12, 2021 converted, written using Roman numerals: V - XII - MMXXIJun 15 06:42 UTC (GMT)
The calendar date Sep-02, 2016 converted, written using Roman numerals: IX - II - MMXVIJun 15 06:42 UTC (GMT)
The calendar date Apr-06, 1756 converted, written using Roman numerals: IV - VI - MDCCLVIJun 15 06:42 UTC (GMT)
The calendar date Mar-06, 1785 converted, written using Roman numerals: III - VI - MDCCLXXXVJun 15 06:42 UTC (GMT)
The calendar date Nov-21, 795 converted, written using Roman numerals: XI - XXI - DCCXCVJun 15 06:41 UTC (GMT)
The calendar date Dec-01, 2002 converted, written using Roman numerals: XII - I - MMIIJun 15 06:41 UTC (GMT)
The calendar date Feb-21, 3345 converted, written using Roman numerals: II - XXI - MMMCCCXLVJun 15 06:41 UTC (GMT)
The calendar date May-20, 1865 converted, written using Roman numerals: V - XX - MDCCCLXVJun 15 06:41 UTC (GMT)
The calendar date Aug-31, 2001 converted, written using Roman numerals: VIII - XXXI - MMIJun 15 06:41 UTC (GMT)
The calendar date Aug-08, 3084 converted, written using Roman numerals: VIII - VIII - MMMLXXXIVJun 15 06:41 UTC (GMT)
The calendar date Mar-26, 1963 converted, written using Roman numerals: III - XXVI - MCMLXIIIJun 15 06:41 UTC (GMT)
The calendar date Oct-11, 87 converted, written using Roman numerals: X - XI - LXXXVIIJun 15 06:41 UTC (GMT)
The calendar date Sep-01, 50 converted, written using Roman numerals: IX - I - LJun 15 06:41 UTC (GMT)
All the calendar dates converted, written using the Roman numerals, online operations

The set of Roman numerals used for writing calendar dates

  • I = 1 (one); V = 5 (five);

  • X = 10 (ten); L = 50 (fifty);

  • C = 100 (one hundred);

  • D = 500 (five hundred);

  • M = 1,000 (one thousand);

    • For writing dates in the future:
    • (*) V = 5,000 or |V| = 5,000 (five thousand); see below why we prefer: (V) = 5,000.

    • (*) X = 10,000 or |X| = 10,000 (ten thousand); see below why we prefer: (X) = 10,000.

Note 1: (*) These numbers were written either with an overline (a bar above the number) or between two vertical lines (two vertical bars).

Note 2 (*) Instead we prefer to write these larger numerals between brackets "()" since: 1) when compared to the overline - it is more accessible to computer users; 2) when compared to the vertical line - it avoids any confusion between the vertical line "|" and the Roman numeral "I" (one).

  • So, (V) = 5,000 and (X) = 10,000.

Note 3: (*) Romans were not using right from the beginning numbers larger than 3,999, so they initially had no representation for numbers like:

  • 5,000 = (V), 10,000 = (X), 50,000 = (L), 100,000 = (C), 500,000 = (D), or 1,000,000 = (M).

These larger numerals were added later to the system and various different notations were used for them, not necessarily the ones above.

For a long time, the maximum number that could be written using Roman numerals was:

  • MMMCMXCIX = 3,999. .