# How Many Bytes Is a Character?

> In UTF-8, the encoding used by most of the web, an English letter takes one byte, an Urdu letter two, most Chinese, Japanese and Devanagari characters three, and emoji four. Characters and bytes are therefore not the same measure.

- URL: https://wordcounter.pk/guides/how-many-bytes-is-a-character/
- Type: Guide
- Updated: 2026-10-15

**Short answer:** In UTF-8: ASCII characters use 1 byte, Urdu and Arabic letters 2 bytes, most CJK and Indic characters 3 bytes, and emoji 4 bytes.

## UTF-8 byte sizes

| Characters | Unicode range | UTF-8 bytes | UTF-16 bytes |
| --- | --- | --- | --- |
| English letters, digits, basic punctuation | U+0000–007F | 1 | 2 |
| Accented Latin, Greek, Cyrillic, Hebrew, Arabic, Urdu, Thaana | U+0080–07FF | 2 | 2 |
| Most CJK, Devanagari, Gurmukhi, Thai, many symbols | U+0800–FFFF | 3 | 2 |
| Emoji and rare characters | U+10000 and above | 4 | 4 |

A message of 100 Urdu letters occupies about 200 bytes in UTF-8, while 100 English letters take 100 bytes. Spaces and Latin punctuation inside Urdu text take one byte each. Try it with the [Byte Counter](https://wordcounter.pk/byte-counter/).

## Why it matters

- **Databases and APIs** with limits defined in bytes allow fewer Urdu characters than English ones.
- **SMS** uses a different scheme: GSM-7 packs 160 characters into a message, but any non-GSM character switches the whole message to UCS-2 (two bytes per character), leaving 70; see the [SMS Character Counter](https://wordcounter.pk/sms-character-counter/).
- **File names and URLs** have byte limits that non-Latin text exhausts faster.
- **Cloud and storage costs** for text-heavy apps in non-Latin scripts.

## Emoji and combined characters

Many emoji are not a single character but a sequence: a base emoji plus a skin-tone modifier, or several emoji joined by a zero-width joiner to form a family. Those sequences can exceed ten bytes while appearing as one symbol. Different tools count them as one or as many; see the [Emoji Counter](https://wordcounter.pk/emoji-counter/). Platforms such as X assign emoji a weight of two characters; see the [X (Twitter) Character Counter](https://wordcounter.pk/x-twitter-character-counter/).

## Characters, code points and graphemes

Three layers are easy to confuse. A code point is a numbered Unicode character. A byte is a unit of storage; one code point takes one to four bytes. A grapheme is what a reader perceives as one symbol, which may be several code points. This site counts code points as characters, which matches most editors; see [Word Count vs Character Count](https://wordcounter.pk/guides/word-count-vs-character-count/).

## Frequently asked questions

### How many bytes is an Urdu word?

Roughly twice its number of letters, plus one byte per space.

### Is UTF-16 more efficient for Urdu?

Equal for letters (2 bytes), but UTF-8 is more compact for text mixed with ASCII.

### Why do emoji use 4 bytes?

They sit above the Basic Multilingual Plane, which needs four bytes in UTF-8.

## Related

- [Word Count vs Character Count](https://wordcounter.pk/guides/word-count-vs-character-count/index.md): What each measures, how they relate and when to use which.
- [Social Media Character Limits](https://wordcounter.pk/guides/social-media-character-limits/index.md): Character limits for every major platform, in one table, as of October 2026.
- [Byte Counter](https://wordcounter.pk/byte-counter/index.md): Measure text size in UTF-8 bytes alongside characters.
- [SMS Character Counter](https://wordcounter.pk/sms-character-counter/index.md): SMS length, encoding (GSM-7 or Unicode) and number of message parts.
- [Emoji Counter](https://wordcounter.pk/emoji-counter/index.md): Count the emoji in a post, caption or message.
- [What Is a Word Counter?](https://wordcounter.pk/guides/what-is-a-word-counter/index.md): Definition, how a word counter works and the units it measures.
- [How Word Count Is Calculated](https://wordcounter.pk/guides/how-word-count-is-calculated/index.md): The step-by-step logic behind word counts, with edge-case examples.
- [What Counts as One Word](https://wordcounter.pk/guides/what-counts-as-one-word/index.md): Quick-reference rules for contractions, hyphens, numbers, URLs and symbols.

## Images

- ![How Many Bytes Is a Character?: UTF-8 and UTF-16 byte sizes for English, Urdu, CJK and emoji. (WordCounter.pk cover graphic)](https://wordcounter.pk/img/how-many-bytes-is-a-character/how-many-bytes-is-a-character-cover-1200.webp)
- ![What this guide covers: UTF-8 byte sizes; Why it matters; Emoji and combined characters](https://wordcounter.pk/img/how-many-bytes-is-a-character/how-many-bytes-is-a-character-how-it-works-1200.webp)
- ![UTF-8 byte sizes: How Many Bytes Is a Character?: reference table with columns Characters, Unicode range, UTF-8 bytes, UTF-16 bytes](https://wordcounter.pk/img/how-many-bytes-is-a-character/how-many-bytes-is-a-character-reference-1200.webp)
- ![Map showing how How Many Bytes Is a Character? connects to Writing Guides, Word Count vs Character Count, Social Media Character Limits, Byte Counter and more on WordCounter.pk](https://wordcounter.pk/img/how-many-bytes-is-a-character/how-many-bytes-is-a-character-related-tools-map-1200.webp)
- ![Quick answer card: How many bytes is an Urdu word? Roughly twice its number of letters, plus one byte per space.](https://wordcounter.pk/img/how-many-bytes-is-a-character/how-many-bytes-is-a-character-quick-answer-1200.webp)