Roman Numerals Date Converter

Convert between Gregorian dates and Roman numerals with historical accuracy

Conversion Options

Conversion Type Date to Roman Roman to Date

Select Date

Enter Roman Numerals (MM.DD.YYYY)

Conversion Results

Gregorian Date

-

The date in standard Gregorian calendar format

Roman Numerals

-

The date expressed in Roman numerals (Month.Day.Year)

Roman Numerals Guide

Basic Numerals

I = 1

V = 5

X = 10

L = 50

C = 100

D = 500

M = 1000

Subtraction Rule

When a smaller numeral appears before a larger one, subtract it:

IV = 4 (5 - 1)

IX = 9 (10 - 1)

XL = 40 (50 - 10)

XC = 90 (100 - 10)

CD = 400 (500 - 100)

CM = 900 (1000 - 100)

This converter follows standard Roman numeral conventions. Dates are displayed in Month.Day.Year format (e.g., I.XVIII.I for January 18, 1 AD). Print Results

1. Introduction

A Roman Numerals Date Converter is a tool that transforms modern calendar dates (in the Gregorian format) into their equivalent representation using Roman numerals. This is useful for:

• Historical documents and inscriptions

• Movie/TV show copyright years

• Special occasions (weddings, tattoos)

• Educational purposes

2. Roman Numerals Basics

Key Symbols

Roman Numeral	Decimal Value
I	1
V	5
X	10
L	50
C	100
D	500
M	1000

Special Cases

• IV = 4 (not IIII)

• IX = 9

• XL = 40

• XC = 90

• CD = 400

• CM = 900

3. Date Conversion Rules

1. Year: Convert as a single number

   • 2023 = MMXXIII (1000 + 1000 + 10 + 10 + 1 + 1 + 1)

2. Month: Use Roman numerals I-XII

   • January = I

   • December = XII

3. Day: Convert as a single number

   • 29 = XXIX (10 + 10 + 9)

4. Conversion Examples

Gregorian Date	Roman Numeral Date
January 1, 2023	I • I • MMXXIII
July 4, 1776	VII • IV • MDCCLXXVI
December 25, 1999	XII • XXV • MCMXCIX

5. How to Use a Roman Numerals Date Converter

1. Input Format: Enter day, month, and year in numeric form

2. Conversion Steps:

   • Convert each component separately

   • Combine with separators (typically dots or slashes)

3. Output: Properly formatted Roman numeral date

7. Manual Conversion Method

Year Conversion Example: 1987

1. Break down: 1000 + 900 + 80 + 7

2. Convert:

   • 1000 = M

   • 900 = CM

   • 80 = LXXX

   • 7 = VII

3. Combine: MCMLXXXVII

8. Special Considerations

• No Zero: Romans had no symbol for zero

• Maximum Number: 3,999 (MMMCMXCIX)

• Modern Extensions: Sometimes uses vinculum for larger numbers

9. Practical Applications

• Clock faces

• Book prefaces

• Monument inscriptions

• Movie copyright dates (e.g., ©MMXXIII)

10. Conversion Table (Years)

Year	Roman Numeral
2000	MM
2010	MMX
2020	MMXX
2023	MMXXIII
2050	MML