Based on Michel Antelme's Inventaire provisoire des caractères et divers signes des écritures khmères pré-modernes et modernes employés pour la notation du khmer, du siamois, des dialectes thaïs méridionaux, du sanskrit et du pāli. This is a work-in-progress: corrections and suggestions welcome.
Velar consonants
| ka |  | ក | (uni1780) |  | ្ក | (uni17d2+uni1780) |
| kha |  | ខ | (uni1781) |  | ្ខ | (uni17d2+uni1781) |
| ga |  | គ | (uni1782) |  | ្គ | (uni17d2+uni1782) |
| gha |  | ឃ | (uni1783) |  | ្ឃ | (uni17d2+uni1783) |
| ṅo |  | ង | (uni1784) |  | ្ង | (uni17d2+uni1784) |
| ṅ̋o |  | ង៉ | (uni1784+uni17c9) | |
Palatal consonants
| ca |  | ច | (uni1785) |  | ្ច | (uni17d2+uni1785) |
| cha |  | ឆ | (uni1786) |  | ្ឆ | (uni17d2+uni1786) |
| ja |  | ជ | (uni1787) |  | ្ជ | (uni17d2+uni1787) |
| jha |  | ឈ | (uni1788) |  | ្ឈ | (uni17d2+uni1788) |
| ña |  | ញ | (uni1789) |  | ្ញ | (uni17d2+uni1789) |
| ñ̋a |  | ញ៉ | (uni1789+uni17c9) | |
Retroflex consonants
| ṭa |  | ដ | (uni178a) |  | ្ដ | (uni17d2+uni178a) |
| ṭha |  | ឋ | (uni178b) |  | ្ឋ | (uni17d2+uni178b) |
| ḍa |  | ឌ | (uni178c) |  | ្ឌ | (uni17d2+uni178c) |
| ḍha |  | ឍ | (uni178d) |  | ្ឍ | (uni17d2+uni178d) |
| ṇa |  | ណ | (uni178e) |  | ្ណ | (uni17d2+uni178e) |
Dental consonants
| ta |  | ត | (uni178f) |  | ្ត | (uni17d2+uni178f) |
| tha |  | ថ | (uni1790) |  | ្ថ | (uni17d2+uni1790) |
| da |  | ទ | (uni1791) |  | ្ទ | (uni17d2+uni1791) |
| dha |  | ធ | (uni1792) |  | ្ធ | (uni17d2+uni1792) |
| na |  | ន | (uni1793) |  | ្ន | (uni17d2+uni1793) |
| n̋a |  | ន៉ | (uni1793+uni17c9) | |
Labial consonants
| pa |  | ប | (uni1794) |  | ្ប | (uni17d2+uni1794) |
| p̋a |  | ប៉ | (uni1794+uni17c9) |  | ្ប៉ | (uni17d2+uni1794+uni17c9) |
| p̂a |  | ប៊ | (uni1794+uni17ca) |  | ្ប៊ | (uni17d2+uni1794+uni17ca) |
| pha |  | ផ | (uni1795) |  | ្ផ | (uni17d2+uni1795) |
| ba |  | ព | (uni1796) |  | ្ព | (uni17d2+uni1796) |
| bha |  | ភ | (uni1797) |  | ្ភ | (uni17d2+uni1797) |
| ma |  | ម | (uni1798) |  | ្ម | (uni17d2+uni1798) |
| m̋a |  | ម៉ | (uni1798+uni17c9) | |
Other consonants
| ya |  | យ | (uni1799) |  | ្យ | (uni17d2+uni1799) |
| y̋a |  | យ៉ | (uni1799+uni17c9) | |
| ra |  | រ | (uni179a) |  | ្រ | (uni17d2+uni179a) |
| r̋a |  | រ៉ | (uni179a+uni17c9) | |
| la |  | ល | (uni179b) |  | ្ល | (uni17d2+uni179b) |
| l̋a |  | ល៉ | (uni179b+uni17c9) | |
| va |  | វ | (uni179c) |  | ្វ | (uni17d2+uni179c) |
| v̋a |  | វ៉ | (uni179c+uni17c9) | |
| śa |  | ឝ | (uni179d) |  | ្ឝ | (uni17d2+uni179d) |
| ṣa |  | ឞ | (uni179e) |  | ្ឞ | (uni17d2+uni179e) |
| sa |  | ស | (uni179f) |  | ្ស | (uni17d2+uni179f) |
| ŝa |  | ស៊ | (uni179f+uni17ca) |  | ្ស៊ | (uni17d2+uni179f+uni17ca) |
| ha |  | ហ | (uni17a0) |  | ្ហ | (uni17d2+uni17a0) |
| ĥa |  | ហ៊ | (uni17a0+uni17ca) | |
| ḷa |  | ឡ | (uni17a1) |  | ្ឡ | (uni17d2+uni17a1) |
| ḷ̋a |  | ឡ៉ | (uni17a1+uni17c9) | |
| ˊa |  | អ | (uni17a2) |  | ្អ | (uni17d2+uni17a2) |
Vocalic signs
| a: |  | ៈ | (uni17c8) |
| ă |  | ័ | (uni17d0) |
| ā |  | ា | (uni17b6) |
| i |  | ិ | (uni17b7) |
| ī |  | ី | (uni17b8) |
| ị |  | ឹ | (uni17b9) |
| ị̄ |  | ឺ | (uni17ba) |
| u |  | ុ | (uni17bb) |
| ū |  | ូ | (uni17bc) |
| uo |  | ួ | (uni17bd) |
| uo: |  | ួៈ | (uni17bd+uni17c8) |
| ei |  | េិ | (uni17c1+uni17b7) |
| oe |  | ើ | (uni17be) |
| eị̄ |  | េឺ | (uni17c1+uni17ba) |
| ị̄e |  | ឿ | (uni17bf) |
| īe |  | ៀ | (uni17c0) |
| e |  | េ | (uni17c1) |
| ae |  | ែ | (uni17c2) |
| ai |  | ៃ | (uni17c3) |
| o |  | ោ | (uni17c4) |
| au |  | ៅ | (uni17c5) |
| uṃ |  | ុំ | (uni17bb+uni17c6) |
| aṃ |  | ំ | (uni17c6) |
| āṃ |  | ាំ | (uni17b6+uni17c6) |
| iṃ |  | ិំ | (uni17b7+uni17c6) |
| aḥ |  | ះ | (uni17c7) |
| āḥ |  | ាះ | (uni17b6+uni17c7) |
| iḥ |  | ិះ | (uni17b7+uni17c7) |
| īḥ |  | ីះ | (uni17b8+uni17c7) |
| ịḥ |  | ឹះ | (uni17b9+uni17c7) |
| ị̄ḥ |  | ឺះ | (uni17ba+uni17c7) |
| uḥ |  | ុះ | (uni17bb+uni17c7) |
| ūḥ |  | ូះ | (uni17bc+uni17c7) |
| oeḥ |  | ើះ | (uni17be+uni17c7) |
| īeḥ |  | ៀះ | (uni17c0+uni17c7) |
| eḥ |  | េះ | (uni17c1+uni17c7) |
| aeḥ |  | ែះ | (uni17c2+uni17c7) |
| aiḥ |  | ៃះ | (uni17c3+uni17c7) |
| oḥ |  | ោះ | (uni17c4+uni17c7) |
| auḥ |  | ៅះ | (uni17c5+uni17c7) |
Independent vowels
| i |  | ឥ | (uni17a5) |  | ្ឥ | (uni17d2+uni17a5) |
| ī |  | ឦ | (uni17a6) | |
| u |  | ឧ | (uni17a7) |  | ្ឧ | (uni17d2+uni17a7) |
| û |  | ឨ | (uni17a8) | |
| ū |  | ឩ | (uni17a9) | |
| ūu |  | ឪ | (uni17aa) | |
| r̥ |  | ឫ | (uni17ab) |  | ្ឫ | (uni17d2+uni17ab) |
| r̥̄ |  | ឬ | (uni17ac) | |
| l̥ |  | ឭ | (uni17ad) | |
| l̥̄ |  | ឮ | (uni17ae) | |
| e |  | ឯ | (uni17af) |  | ្ឯ | (uni17d2+uni17af) |
| ai |  | ឰ | (uni17b0) | |
| o |  | ឱ ឲ | (uni17b1) (uni17b2) | |
| au |  | ឳ | (uni17b3) | |
Diacritic signs
| dhmeña kaṇtura, samlāp’ bīra, mūsikadaṇḍa |  | ៉ | (uni17c9) | |
| trīsăbda, sak’ ka |  | ៊ | (uni17ca) | |
| pantak’, samlāp’, saṅkat’, rassasaññā |  | ់ | (uni17cb) | |
| lekha astā, lekha prāṃ pī |  | ៏ | (uni17cf) | |
| daṇḍaghāta, saññā paṭisedha, kanduya kaṇtura, kanduya kaṃpruka |  | ៍ | (uni17cd) | |
| rapāda, repha: |  | ៌ | (uni17cc) | |
| kākapāda, joeṅa k’aeka |  | ៎ | (uni17ce) | |
| ’aḍḍhacanda |  | ៝ | (uni17dd) | |
| virāma |  | ៑ | (uni17d1) |  | ៑︀ | (uni17d1+unife00)[1] |
| ’avagraha: |  | ៜ | (uni17dc) | |
| m̋ai do |  | | (not in unicode) | |
| m̋ai citvā, lekha prāṃ bil, rājapaksī |  | | (not in unicode) | |
Numbers
| 0 |  | ០ | (uni17e0) |
| 1 |  | ១ | (uni17e1) |
| 2 |  | ២ | (uni17e2) |
| 3 |  | ៣ | (uni17e3) |
| 4 |  | ៤ | (uni17e4) |
| 5 |  | ៥ | (uni17e5) |
| 6 |  | ៦ | (uni17e6) |
| 7 |  | ៧ | (uni17e7) |
| 8 |  | ៨ | (uni17e8) |
| 9 |  | ៩ | (uni17e9) |
| 0̲ |  | ៰ | (uni17f0) |
| 1̲ |  | ៱ | (uni17f1) |
| 2̲ |  | ៲ | (uni17f2) |
| 3̲ |  | ៳ | (uni17f3) |
| 4̲ |  | ៴ | (uni17f4) |
| 5̲ |  | ៵ | (uni17f5) |
| 6̲ |  | ៶ | (uni17f6) |
| 7̲ |  | ៷ | (uni17f7) |
| 8̲ |  | ៸ | (uni17f8) |
| 9̲ |  | ៹ | (uni17f9) |
Punctuation signs
 | ៗ | (uni17d7) |
 | ។ | (uni17d4) |
 | ៕ | (uni17d5) |
 | ៘ | (uni17d8) (uni17d7+uni179b+uni17d7) |
 | | (not in unicode)(uni17d7+uni1794+uni17c1+uni17d7) |
 | ៙ | (uni17d9) |
 | | (not in unicode) |
 | ៚ | (uni17da) |
 | ៖ | (uni17d6) |
National currency symbol
 | ៛ | (uni17db) |
 | | (not in unicode) |
Additional characters needed for typesetting siamese language in khmer script
| b̲a |  | | (not in unicode) |
| pha |  | | (not in unicode) |
