Alphabet

The Esperanto alphabet has 28 letters.

Uppercase

A, B, C, Ĉ, D, E, F, G, Ĝ, H, Ĥ, I, J, Ĵ, K, L, M, N, O, P, R, S, Ŝ, T, U, Ŭ, V, Z

Lowercase

a, b, c, ĉ, d, e, f, g, ĝ, h, ĥ, i, j, ĵ, k, l, m, n, o, p, r, s, ŝ, t, u, ŭ, v, z

Names

a, bo, co, ĉo, do, e, fo, go, ĝo, ho, ĥo, i, jo, ĵo, ko, lo, mo, no, o, po, ro, so, ŝo, to, u, ŭo, vo, zo

Four letters from the English alphabet have been dropped – Q, W, X and Y – and there are six new accented letters: Ĉ, Ĝ, Ĥ, Ĵ, Ŝ and Ŭ. The first five have an angle-shape accent called a circumflex (^) over them, whilst the last has an accent rather like the bottom part of a circle, which is called a breve (˘).

All of the accented letters are unique to Esperanto except for ŭo (Ŭ), which also exists in Belarusian, and ĝo (Ĝ), which also exists in Aleut. Some of the accented letters may be used in transcription systems for languages that use non-Latin alphabets. (For example, ŝo (Ŝ) is used as the ISO 9:1995 transliteration of the Russian Cyrillic letter shcha (Щ).)

Pronunciation

Each letter in Esperanto has only one pronunciation (allowing for cultural variation), and no letters are silent. There are six dipthongs (see the next section), but their pronunciation follows logically from their constituent letters, except for being shortened into a single syllable. This means that Esperanto is pronounced just as it is spelled.

Also, each sound has only one way of being written, so it is very easy to spell Esperanto words you hear.

The technical description for these traits is that Esperanto is phonetic and orthographic.