The Thai Vowels (Sara): Forms and How to Type Them
Thai vowels, called สระ (sara), are written around the consonant rather than in a line after it. A single vowel sound can sit before, above, below, or after its consonant — or surround it on several sides at once. This is the part of Thai typing that feels strangest at first.
Four positions around the consonant
Vowels attach in four places: pre-posed (before the consonant), above it, below it, and trailing (after it). Some vowels combine two or more of these positions to write one sound, so the consonant ends up wrapped on several sides.
Pre-posed vowels: เ แ โ ใ ไ
These five vowels are written to the left of the consonant, even though they are pronounced after it. This is the single most important typing rule in Thai: you press the pre-posed vowel first, then the consonant. ThaiTyper enforces that order so it becomes automatic.
Above and below
Vowels like ◌ิ ◌ี ◌ึ ◌ื and ◌ั sit above the consonant, while ◌ุ and ◌ู sit below. These are combining marks: you type the consonant first and the vowel stacks onto it. A tone mark, if the syllable has one, goes on top after that.
Trailing and surrounding vowels
Trailing vowels such as ◌ะ, ◌า, and ◌ำ follow the consonant on the line. Surrounding vowels like เ◌า and แ◌ะ combine a pre-posed part and a trailing part around the same consonant — so you lead with the pre-posed piece, type the consonant, then finish the trailing piece.
Practising whole clusters
Because Thai builds these pieces into one written syllable, ThaiTyper's later skills drill complete clusters — consonant, vowel, and tone in the right keystroke order — instead of isolated keys, so your fingers learn the wrapping motion as a single habit.
Related guides
Thai's 44 consonants fall into three classes that, with the four tone marks, decide a syllable's tone. Here is what every Thai typist is actually keying in.
Thailand has two standard Thai keyboard layouts. Here is what sets Kedmanee and Pattachote apart, and how to choose the one to learn.
A step-by-step roadmap for learning to touch-type Thai — from the home row to full sentences — without burning out.