To find the month you want scroll down or do a search. For dates towards the end of February in a Leap Year - such as the year 2000 - there is an extra section at the end of the February chart.
To convert a date, read across to the third column for the full date with all the abbreviations the Romans would have used on inscriptions. The initial 'A.D.' stands for ante diem - days before - not AD Anno Domini. It can be omitted. Martius (March) can also be abbreviated MAR. If you want to add the year, you can add the year we would use converted into Roman numerals - so 1999 would be MCMXCIX. If you want to use a Roman year, add 753 to the year before converting into Roman and add the letters AUC at the end - so 1999 becomes MMDCCLII AUC. I don't have a conversion table for numbers this big so just take 1000 off, look that number up in my tables and then add a 'M' at the start.
| Modern | Roman | Full date |
|---|---|---|
| January | IANVARIVS | IAN. |
| 1 | KALENDS | KAL. IAN |
| 2 | IV | A.D. IV NON. IAN. |
| 3 | III | A.D. III NON. IAN. |
| 4 | PRIDIE | PRID. NON. IAN. |
| 5 | NONES | NON. IAN. |
| 6 | VIII | A.D. VIII ID. IAN. |
| 7 | VII | A.D. VII ID. IAN. |
| 8 | VI | A.D. VI ID. IAN. |
| 9 | V | A.D. V ID. IAN. |
| 10 | IV | A.D. IV ID. IAN. |
| 11 | III | A.D. III ID. IAN. |
| 12 | PRIDIE | PRID. ID. IAN. |
| 13 | IDES | ID. IAN. |
| 14 | XIX | A.D. XIX KAL. FEB. |
| 15 | XVIII | A.D. XVIII KAL. FEB. |
| 16 | XVII | A.D. XVII KAL. FEB. |
| 17 | XVI | A.D. XVI KAL. FEB. |
| 18 | XV | A.D. XV KAL. FEB. |
| 19 | XIV | A.D. XIV KAL. FEB. |
| 20 | XIII | A.D. XIII KAL. FEB. |
| 21 | XII | A.D. XII KAL. FEB. |
| 22 | XI | A.D. XI KAL. FEB. |
| 23 | X | A.D. X KAL. FEB. |
| 24 | IX | A.D. IX KAL. FEB. |
| 25 | VIII | A.D. VIII KAL. FEB. |
| 26 | VII | A.D. VII KAL. FEB. |
| 27 | VI | A.D. VI KAL. FEB. |
| 28 | V | A.D. V KAL. FEB. |
| 29 | IV | A.D. IV KAL. FEB. |
| 30 | III | A.D. III KAL. FEB. |
| 31 | PRIDIE | PRID. KAL. FEB. |
| February | FEBRVARIS | FEB. |
| Non-leap year | ||
| 1 | KALENDS | KAL. FEB. |
| 2 | IV | A.D. IV NON. FEB. |
| 3 | III | A.D. III NON. FEB. |
| 4 | PRIDIE | PRID. NON. FEB. |
| 5 | NONES | NON. FEB. |
| 6 | VIII | A.D. VIII ID. FEB. |
| 7 | VII | A.D. VII ID. FEB. |
| 8 | VI | A.D. VI ID. FEB. |
| 9 | V | A.D. V ID. FEB. |
| 10 | IV | A.D. IV ID. FEB. |
| 11 | III | A.D. III ID. FEB. |
| 12 | PRIDIE | PRID. ID. FEB. |
| 13 | IDES | ID. FEB. |
| 14 | XVI | A.D. XVI KAL. MART. |
| 15 | XV | A.D. XV KAL. MART. |
| 16 | XIV | A.D. XIV KAL. MART. |
| 17 | XIII | A.D. XIII KAL. MART. |
| 18 | XII | A.D. XII KAL. MART. |
| 19 | XI | A.D. XI KAL. MART. |
| 20 | X | A.D. X KAL. MART. |
| 21 | IX | A.D. IX KAL. MART. |
| 22 | VIII | A.D. VIII KAL. MART. |
| 23 | VII | A.D. VII KAL. MART. |
| 24 | VI | A.D. VI KAL. MART. |
| 25 | V | A.D. V KAL. MART. |
| 26 | IV | A.D. IV KAL. MART. |
| 27 | III | A.D. III KAL. MART. |
| 28 | PRIDIE | PRID. KAL. MART. |
| Leap year | ||
| 23 | VII | A.D. VII KAL. MART. |
| 24 | VI | A.D. VI KAL. MART. |
| 25 | BIS VI | A.D. BIS VI KAL. M. |
| 26 | V | A.D. V KAL. MART. |
| 27 | IV | A.D. IV KAL. MART. |
| 28 | III | A.D. III KAL. MART. |
| 29 | PRIDIE | PRID. KAL. MART. |
| March | MARTIVS | MART. |
| 1 | KALENDS | KAL. MART. |
| 2 | VI | A.D. VI NON. MART. |
| 3 | V | A.D. V NON. MART. |
| 4 | IV | A.D. IV NON. MART. |
| 5 | III | A.D. III NON. MART. |
| 6 | PRIDIE | PRID. MART. |
| 7 | NONES | NON. MART. |
| 8 | VIII | A.D. VIII ID. MART. |
| 9 | VII | A.D. VII ID. MART. |
| 10 | VI | A.D. VI ID. MART. |
| 11 | V | A.D. V ID. MART. |
| 12 | IV | A.D. IV ID. MART. |
| 13 | III | A.D. III ID. MART. |
| 14 | PRIDIE | PRID. ID. MART. |
| 15 | IDES | ID. MART. |
| 16 | XVII | A.D. XVII KAL. APR. |
| 17 | XVI | A.D. XVI KAL. APR. |
| 18 | XV | A.D. XV KAL. APR. |
| 19 | XIV | A.D. XIV KAL. APR. |
| 20 | XIII | A.D. XIII KAL. APR. |
| 21 | XII | A.D. XII KAL. APR. |
| 22 | XI | A.D. XI KAL. APR. |
| 23 | X | A.D. X KAL. APR. |
| 24 | IX | A.D. IX KAL. APR. |
| 25 | VIII | A.D. VIII KAL. APR. |
| 26 | VII | A.D. VII KAL. APR. |
| 27 | VI | A.D. VI KAL. APR. |
| 28 | V | A.D. V KAL. APR. |
| 29 | IV | A.D. IV KAL. APR. |
| 30 | III | A.D. III KAL. APR. |
| 31 | PRIDIE | PRID. KAL. APR. |
| April | APRILIS | APR. |
| 1 | KALENDS | KAL. APR. |
| 2 | IV | A.D. IV NON. APR. |
| 3 | III | A.D. III NON. APR. |
| 4 | PRIDIE | PRID. NON. APR. |
| 5 | NONES | NON. APR. |
| 6 | VIII | A.D. VIII ID. APR. |
| 7 | VII | A.D. VII ID. APR. |
| 8 | VI | A.D. VI ID. APR. |
| 9 | V | A.D. V ID. APR. |
| 10 | IV | A.D. IV ID. APR. |
| 11 | III | A.D. III ID. APR. |
| 12 | PRIDIE | PRID. ID. APR. |
| 13 | IDES | ID. APR. |
| 14 | XVIII | A.D. XVIII KAL. MAI. |
| 15 | XVII | A.D. XVII KAL. MAI. |
| 16 | XVI | A.D. XVI KAL. MAI. |
| 17 | XV | A.D. XV KAL. MAI. |
| 18 | XIV | A.D. XIV KAL. MAI. |
| 19 | XIII | A.D. XIII KAL. MAI. |
| 20 | XII | A.D. XII KAL. MAI. |
| 21 | XI | A.D. XI KAL. MAI. |
| 22 | X | A.D. X KAL. MAI. |
| 23 | IX | A.D. IX KAL. MAI. |
| 24 | VIII | A.D. VIII KAL. MAI. |
| 25 | VII | A.D. VII KAL. MAI. |
| 26 | VI | A.D. VI KAL. MAI. |
| 27 | V | A.D. V KAL. MAI. |
| 28 | IV | A.D. IV KAL. MAI. |
| 29 | III | A.D. III KAL. MAI. |
| 30 | PRIDIE | PRID. KAL. MAI. |
| May | MAIVS | MAI. |
| 1 | KALENDS | KAL. MAI. |
| 2 | VI | A.D. VI NON. MAI. |
| 3 | V | A.D. V NON. MAI. |
| 4 | IV | A.D. IV NON. MAI. |
| 5 | III | A.D. III NON. MAI. |
| 6 | PRIDIE | PRID. MAI. |
| 7 | NONES | NON. MAI. |
| 8 | VIII | A.D. VIII ID. MAI. |
| 9 | VII | A.D. VII ID. MAI. |
| 10 | VI | A.D. VI ID. MAI. |
| 11 | V | A.D. V ID. MAI. |
| 12 | IV | A.D. IV ID. MAI. |
| 13 | III | A.D. III ID. MAI. |
| 14 | PRIDIE | PRID. ID. MAI. |
| 15 | IDES | ID. MAI. |
| 16 | XVII | A.D. XVII KAL. IVN. |
| 17 | XVI | A.D. XVI KAL. IVN. |
| 18 | XV | A.D. XV KAL. IVN. |
| 19 | XIV | A.D. XIV KAL. IVN. |
| 20 | XIII | A.D. XIII KAL. IVN. |
| 21 | XII | A.D. XII KAL. IVN. |
| 22 | XI | A.D. XI KAL. IVN. |
| 23 | X | A.D. X KAL. IVN. |
| 24 | IX | A.D. IX KAL. IVN. |
| 25 | VIII | A.D. VIII KAL. IVN. |
| 26 | VII | A.D. VII KAL. IVN. |
| 27 | VI | A.D. VI KAL. IVN. |
| 28 | V | A.D. V KAL. IVN. |
| 29 | IV | A.D. IV KAL. IVN. |
| 30 | III | A.D. III KAL. IVN. |
| 31 | PRIDIE | PRID. KAL. IVN. |
| June | IVNIVS | IVN. |
| 1 | KALENDS | KAL. IVN. |
| 2 | IV | A.D. IV NON. IVN. |
| 3 | III | A.D. III NON. IVN. |
| 4 | PRIDIE | PRID. NON. IVN. |
| 5 | NONES | NON. IVN. |
| 6 | VIII | A.D. VIII ID. IVN. |
| 7 | VII | A.D. VII ID. IVN. |
| 8 | VI | A.D. VI ID. IVN. |
| 9 | V | A.D. V ID. IVN. |
| 10 | IV | A.D. IV ID. IVN. |
| 11 | III | A.D. III ID. IVN. |
| 12 | PRIDIE | PRID. ID. IVN. |
| 13 | IDES | ID. IVN. |
| 14 | XVIII | A.D. XVIII KAL. IVL. |
| 15 | XVII | A.D. XVII KAL. IVL. |
| 16 | XVI | A.D. XVI KAL. IVL. |
| 17 | XV | A.D. XV KAL. IVL. |
| 18 | XIV | A.D. XIV KAL. IVL. |
| 19 | XIII | A.D. XIII KAL. IVL. |
| 20 | XII | A.D. XII KAL. IVL. |
| 21 | XI | A.D. XI KAL. IVL. |
| 22 | X | A.D. X KAL. IVL. |
| 23 | IX | A.D. IX KAL. IVL. |
| 24 | VIII | A.D. VIII KAL. IVL. |
| 25 | VII | A.D. VII KAL. IVL. |
| 26 | VI | A.D. VI KAL. IVL. |
| 27 | V | A.D. V KAL. IVL. |
| 28 | IV | A.D. IV KAL. IVL. |
| 29 | III | A.D. III KAL. IVL. |
| 30 | PRIDIE | PRID. KAL. IVL. |
| July | IVLIVS | IVL. |
| 1 | KALENDS | KAL. IVL. |
| 2 | VI | A.D. VI NON. IVL. |
| 3 | V | A.D. V NON. IVL. |
| 4 | IV | A.D. IV NON. IVL. |
| 5 | III | A.D. III NON. IVL. |
| 6 | PRIDIE | PRID. IVL. |
| 7 | NONES | NON. IVL. |
| 8 | VIII | A.D. VIII ID. IVL. |
| 9 | VII | A.D. VII ID. IVL. |
| 10 | VI | A.D. VI ID. IVL. |
| 11 | V | A.D. V ID. IVL. |
| 12 | IV | A.D. IV ID. IVL. |
| 13 | III | A.D. III ID. IVL. |
| 14 | PRIDIE | PRID. ID. IVL. |
| 15 | IDES | ID. IVL. |
| 16 | XVII | A.D. XVII KAL. AVG. |
| 17 | XVI | A.D. XVI KAL. AVG. |
| 18 | XV | A.D. XV KAL. AVG. |
| 19 | XIV | A.D. XIV KAL. AVG. |
| 20 | XIII | A.D. XIII KAL. AVG. |
| 21 | XII | A.D. XII KAL. AVG. |
| 22 | XI | A.D. XI KAL. AVG. |
| 23 | X | A.D. X KAL. AVG. |
| 24 | IX | A.D. IX KAL. AVG. |
| 25 | VIII | A.D. VIII KAL. AVG. |
| 26 | VII | A.D. VII KAL. AVG. |
| 27 | VI | A.D. VI KAL. AVG. |
| 28 | V | A.D. V KAL. AVG. |
| 29 | IV | A.D. IV KAL. AVG. |
| 30 | III | A.D. III KAL. AVG. |
| 31 | PRIDIE | PRID. KAL. AVG. |
| August | AVGVSTVS | AVG. |
| 1 | KALENDS | KAL. IAN |
| 2 | IV | A.D. IV NON. AVG. |
| 3 | III | A.D. III NON. AVG. |
| 4 | PRIDIE | PRID. NON. AVG. |
| 5 | NONES | NON. AVG. |
| 6 | VIII | A.D. VIII ID. AVG. |
| 7 | VII | A.D. VII ID. AVG. |
| 8 | VI | A.D. VI ID. AVG. |
| 9 | V | A.D. V ID. AVG. |
| 10 | IV | A.D. IV ID. AVG. |
| 11 | III | A.D. III ID. AVG. |
| 12 | PRIDIE | PRID. ID. AVG. |
| 13 | IDES | ID. AVG. |
| 14 | XIX | A.D. XIX KAL. SEPT. |
| 15 | XVIII | A.D. XVIII KAL. SEPT. |
| 16 | XVII | A.D. XVII KAL. SEPT. |
| 17 | XVI | A.D. XVI KAL. SEPT. |
| 18 | XV | A.D. XV KAL. SEPT. |
| 19 | XIV | A.D. XIV KAL. SEPT. |
| 20 | XIII | A.D. XIII KAL. SEPT. |
| 21 | XII | A.D. XII KAL. SEPT. |
| 22 | XI | A.D. XI KAL. SEPT. |
| 23 | X | A.D. X KAL. SEPT. |
| 24 | IX | A.D. IX KAL. SEPT. |
| 25 | VIII | A.D. VIII KAL. SEPT. |
| 26 | VII | A.D. VII KAL. SEPT. |
| 27 | VI | A.D. VI KAL. SEPT. |
| 28 | V | A.D. V KAL. SEPT. |
| 29 | IV | A.D. IV KAL. SEPT. |
| 30 | III | A.D. III KAL. SEPT. |
| 31 | PRIDIE | PRID. KAL. SEPT. |
| September | SEPTEMBER | SEPT. |
| 1 | KALENDS | KAL. SEPT. |
| 2 | IV | A.D. IV NON. SEPT. |
| 3 | III | A.D. III NON. SEPT. |
| 4 | PRIDIE | PRID. NON. SEPT. |
| 5 | NONES | NON. SEPT. |
| 6 | VIII | A.D. VIII ID. SEPT. |
| 7 | VII | A.D. VII ID. SEPT. |
| 8 | VI | A.D. VI ID. SEPT. |
| 9 | V | A.D. V ID. SEPT. |
| 10 | IV | A.D. IV ID. SEPT. |
| 11 | III | A.D. III ID. SEPT. |
| 12 | PRIDIE | PRID. ID. SEPT. |
| 13 | IDES | ID. SEPT. |
| 14 | XVIII | A.D. XVIII KAL. OCT. |
| 15 | XVII | A.D. XVII KAL. OCT. |
| 16 | XVI | A.D. XVI KAL. OCT. |
| 17 | XV | A.D. XV KAL. OCT. |
| 18 | XIV | A.D. XIV KAL. OCT. |
| 19 | XIII | A.D. XIII KAL. OCT. |
| 20 | XII | A.D. XII KAL. OCT. |
| 21 | XI | A.D. XI KAL. OCT. |
| 22 | X | A.D. X KAL. OCT. |
| 23 | IX | A.D. IX KAL. OCT. |
| 24 | VIII | A.D. VIII KAL. OCT. |
| 25 | VII | A.D. VII KAL. OCT. |
| 26 | VI | A.D. VI KAL. OCT. |
| 27 | V | A.D. V KAL. OCT. |
| 28 | IV | A.D. IV KAL. OCT. |
| 29 | III | A.D. III KAL. OCT. |
| 30 | PRIDIE | PRID. KAL. OCT. |
| October | OCTOBER | OCT. |
| 1 | KALENDS | KAL. OCT. |
| 2 | VI | A.D. VI NON. OCT. |
| 3 | V | A.D. V NON. OCT. |
| 4 | IV | A.D. IV NON. OCT. |
| 5 | III | A.D. III NON. OCT. |
| 6 | PRIDIE | PRID. OCT. |
| 7 | NONES | NON. OCT. |
| 8 | VIII | A.D. VIII ID. OCT. |
| 9 | VII | A.D. VII ID. OCT. |
| 10 | VI | A.D. VI ID. OCT. |
| 11 | V | A.D. V ID. OCT. |
| 12 | IV | A.D. IV ID. OCT. |
| 13 | III | A.D. III ID. OCT. |
| 14 | PRIDIE | PRID. ID. OCT. |
| 15 | IDES | ID. OCT. |
| 16 | XVII | A.D. XVII KAL. NOV. |
| 17 | XVI | A.D. XVI KAL. NOV. |
| 18 | XV | A.D. XV KAL. NOV. |
| 19 | XIV | A.D. XIV KAL. NOV. |
| 20 | XIII | A.D. XIII KAL. NOV. |
| 21 | XII | A.D. XII KAL. NOV. |
| 22 | XI | A.D. XI KAL. NOV. |
| 23 | X | A.D. X KAL. NOV. |
| 24 | IX | A.D. IX KAL. NOV. |
| 25 | VIII | A.D. VIII KAL. NOV. |
| 26 | VII | A.D. VII KAL. NOV. |
| 27 | VI | A.D. VI KAL. NOV. |
| 28 | V | A.D. V KAL. NOV. |
| 29 | IV | A.D. IV KAL. NOV. |
| 30 | III | A.D. III KAL. NOV. |
| 31 | PRIDIE | PRID. KAL. NOV. |
| November | NOVEMBER | NOV. |
| 1 | KALENDS | KAL. NOV. |
| 2 | IV | A.D. IV NON. NOV. |
| 3 | III | A.D. III NON. NOV. |
| 4 | PRIDIE | PRID. NON. NOV. |
| 5 | NONES | NON. NOV. |
| 6 | VIII | A.D. VIII ID. NOV. |
| 7 | VII | A.D. VII ID. NOV. |
| 8 | VI | A.D. VI ID. NOV. |
| 9 | V | A.D. V ID. NOV. |
| 10 | IV | A.D. IV ID. NOV. |
| 11 | III | A.D. III ID. NOV. |
| 12 | PRIDIE | PRID. ID. NOV. |
| 13 | IDES | ID. NOV. |
| 14 | XVIII | A.D. XVIII KAL. DEC. |
| 15 | XVII | A.D. XVII KAL. DEC. |
| 16 | XVI | A.D. XVI KAL. DEC. |
| 17 | XV | A.D. XV KAL. DEC. |
| 18 | XIV | A.D. XIV KAL. DEC. |
| 19 | XIII | A.D. XIII KAL. DEC. |
| 20 | XII | A.D. XII KAL. DEC. |
| 21 | XI | A.D. XI KAL. DEC. |
| 22 | X | A.D. X KAL. DEC. |
| 23 | IX | A.D. IX KAL. DEC. |
| 24 | VIII | A.D. VIII KAL. DEC. |
| 25 | VII | A.D. VII KAL. DEC. |
| 26 | VI | A.D. VI KAL. DEC. |
| 27 | V | A.D. V KAL. DEC. |
| 28 | IV | A.D. IV KAL. DEC. |
| 29 | III | A.D. III KAL. DEC. |
| 30 | PRIDIE | PRID. KAL. DEC. |
| December | DECEMBER | DEC. |
| 1 | KALENDS | KAL. DEC. |
| 2 | IV | A.D. IV NON. DEC. |
| 3 | III | A.D. III NON. DEC. |
| 4 | PRIDIE | PRID. NON. DEC. |
| 5 | NONES | NON. DEC. |
| 6 | VIII | A.D. VIII ID. DEC. |
| 7 | VII | A.D. VII ID. DEC. |
| 8 | VI | A.D. VI ID. DEC. |
| 9 | V | A.D. V ID. DEC. |
| 10 | IV | A.D. IV ID. DEC. |
| 11 | III | A.D. III ID. DEC. |
| 12 | PRIDIE | PRID. ID. DEC. |
| 13 | IDES | ID. DEC. |
| 14 | XIX | A.D. XIX KAL. IAN. |
| 15 | XVIII | A.D. XVIII KAL. IAN. |
| 16 | XVII | A.D. XVII KAL. IAN. |
| 17 | XVI | A.D. XVI KAL. IAN. |
| 18 | XV | A.D. XV KAL. IAN. |
| 19 | XIV | A.D. XIV KAL. IAN. |
| 20 | XIII | A.D. XIII KAL. IAN. |
| 21 | XII | A.D. XII KAL. IAN. |
| 22 | XI | A.D. XI KAL. IAN. |
| 23 | X | A.D. X KAL. IAN. |
| 24 | IX | A.D. IX KAL. IAN. |
| 25 | VIII | A.D. VIII KAL. IAN. |
| 26 | VII | A.D. VII KAL. IAN. |
| 27 | VI | A.D. VI KAL. IAN. |
| 28 | V | A.D. V KAL. IAN. |
| 29 | IV | A.D. IV KAL. IAN. |
| 30 | III | A.D. III KAL. IAN. |
| 31 | PRIDIE | PRID. KAL. IAN. |