how many letter are there in the world combining all languages

There is no single exact number of “letters in the world” across all languages, because languages use different writing systems, and some use alphabets while others use scripts with many more symbols or even no fixed letter set at all.

A simple way to think about it is this:

• English has 26 letters.

• Arabic has 28 letters.

• Greek has 24 letters.

• Russian has 33 letters.

• Khmer is often cited as having 74 letters, one of the largest alphabets.

• Japanese does not use one alphabet in the same way; it uses multiple scripts, including Hiragana and Katakana with 46 basic characters each, plus Kanji, which has no fixed total.

What this means

If you try to combine all languages, there is no meaningful total like “X letters,” because:

• many languages share the same alphabet,
• many scripts include extra marks, digraphs, or modified letters,
• some writing systems have thousands of characters rather than a small alphabet,
• some languages are written in more than one script.

So the best answer is: there is no universal total number of letters across all languages ; the number depends on how you define “letter” and which writing systems you include.

Quick example

If you meant “How many letters are there in the most common alphabet-based writing systems?”, the answer would still be a mix of different counts , not one combined total. For example, English uses 26, Arabic 28, Russian 33, and Khmer 74.

If you want, I can also give you a table of major languages and their letter counts.