Date to Roman Numerals Converter: Write Calendar Date Nov-21, 2015 With Roman Numerals (Birthday, Wedding, Marriage, Graduation, Anniversary). Date Format: Month-Day, Year. How To Explanations

Write date Nov-21, 2015 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, November:

November is the eleventh (11th) month of the year.


Replace the name of the month with the corresponding number of the month of the year: 11.


I = 1; X = 10;

11 = 10 + 1;


10 = X;


1 = I;


11 = 10 + 1 = X + I = XI;


» 11 = XI


Day, 21:

I = 1; X = 10;

21 = 20 + 1;


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


1 = I;


21 = 20 + 1 = XX + I = XXI;


» 21 = XXI


Year, 2015:

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

2015 = 2,000 + 10 + 5;


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


10 = X;


5 = V;


2015 = 2,000 + 10 + 5 = MM + X + V = MMXV;


» 2015 = MMXV


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 Nov-21, 2015 converted, written using Roman numerals: XI - XXI - MMXVMar 28 09:13 UTC (GMT)
The calendar date Oct-10, 138 converted, written using Roman numerals: X - X - CXXXVIIIMar 28 09:13 UTC (GMT)
The calendar date Oct-17, 106 converted, written using Roman numerals: X - XVII - CVIMar 28 09:13 UTC (GMT)
The calendar date Nov-28, 118 converted, written using Roman numerals: XI - XXVIII - CXVIIIMar 28 09:13 UTC (GMT)
The calendar date Jul-09, 931 converted, written using Roman numerals: VII - IX - CMXXXIMar 28 09:13 UTC (GMT)
The calendar date Mar-25, 1449 converted, written using Roman numerals: III - XXV - MCDXLIXMar 28 09:13 UTC (GMT)
The calendar date Jan-01, 2593 converted, written using Roman numerals: I - I - MMDXCIIIMar 28 09:13 UTC (GMT)
The calendar date Oct-03, 3020 converted, written using Roman numerals: X - III - MMMXXMar 28 09:13 UTC (GMT)
The calendar date Jun-04, 1066 converted, written using Roman numerals: VI - IV - MLXVIMar 28 09:13 UTC (GMT)
The calendar date Jun-22, 2209 converted, written using Roman numerals: VI - XXII - MMCCIXMar 28 09:13 UTC (GMT)
The calendar date Jul-03, 170 converted, written using Roman numerals: VII - III - CLXXMar 28 09:13 UTC (GMT)
The calendar date Sep-10, 666 converted, written using Roman numerals: IX - X - DCLXVIMar 28 09:13 UTC (GMT)
The calendar date Sep-19, 6468 converted, written using Roman numerals: IX - XIX - (V)MCDLXVIIIMar 28 09:12 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. .