Date to Roman Numerals Converter: Write Calendar Date Mar-31, 17 With Roman Numerals (Birthday, Wedding, Marriage, Graduation, Anniversary). Date Format: Month-Day, Year. How To Explanations

Write date Mar-31, 17 in Roman numerals

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

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

» 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, March:

March is the third (3rd) month of the year.

Replace the name of the month with the corresponding number of the month of the year: 3.


I = 1;

3 = 1 + 1 + 1 = I + I + I = III;

» 3 = III


Day, 31:

I = 1; X = 10;

31 = 30 + 1;

30 = 10 + 10 + 10 = X + X + X = XXX;

1 = I;

31 = 30 + 1 = XXX + I = XXXI;

» 31 = XXXI


Year, 17:

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

17 = 10 + 7;

10 = X;

7 = 5 + 1 + 1 = V + I + I = VII;

17 = 10 + 7 = X + VII = XVII;

» 17 = XVII


How to write the calendar date in Roman numerals:
Mar-31, 17 = III - XXXI - XVII
Month-Day, Year

More dates written in Roman numerals:

» Convert the calendar date March-31, 16, how to write the date in Roman numerals?

» Convert the calendar date March-31, 18, how to write the date in Roman numerals?

» The additive notation in the writing of the Roman numerals

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 Mar-31, 17 converted, written using Roman numerals: III - XXXI - XVIIMay 14 22:16 UTC (GMT)
The calendar date Jul-30, 66 converted, written using Roman numerals: VII - XXX - LXVIMay 14 22:16 UTC (GMT)
The calendar date Sep-30, 2019 converted, written using Roman numerals: IX - XXX - MMXIXMay 14 22:16 UTC (GMT)
The calendar date May-18, 18 converted, written using Roman numerals: V - XVIII - XVIIIMay 14 22:16 UTC (GMT)
The calendar date Aug-05, 1100 converted, written using Roman numerals: VIII - V - MCMay 14 22:16 UTC (GMT)
The calendar date Sep-16, 837 converted, written using Roman numerals: IX - XVI - DCCCXXXVIIMay 14 22:16 UTC (GMT)
The calendar date Dec-07, 2020 converted, written using Roman numerals: XII - VII - MMXXMay 14 22:16 UTC (GMT)
The calendar date May-09, 2002 converted, written using Roman numerals: V - IX - MMIIMay 14 22:16 UTC (GMT)
The calendar date Aug-06, 182 converted, written using Roman numerals: VIII - VI - CLXXXIIMay 14 22:16 UTC (GMT)
The calendar date Oct-20, 1988 converted, written using Roman numerals: X - XX - MCMLXXXVIIIMay 14 22:16 UTC (GMT)
The calendar date Oct-24, 2002 converted, written using Roman numerals: X - XXIV - MMIIMay 14 22:15 UTC (GMT)
The calendar date Jan-01, 231 converted, written using Roman numerals: I - I - CCXXXIMay 14 22:15 UTC (GMT)
The calendar date Oct-10, 1928 converted, written using Roman numerals: X - X - MCMXXVIIIMay 14 22:15 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. .