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Ask Your Tutor · Computer Science

Why is UTF-8 better for Indian languages than ASCII?

From NCERT Asked by Anonymous from Dallas, United States 24 Oct 2026, 2:40 AM IST Updated

In one line

UTF-8 can store all Indian language letters, but ASCII cannot.

Devanagari — Indic script used in the Indian subcontinent
Devanagari — Indic script used in the Indian subcontinent
Devanagari script (used in Hindi, Marathi, Sanskrit) needs UTF-8 to be stored and shown on computers.
Image: Wikipedia

The rule

ASCII is a character encoding that uses 7 or 8 bits to represent only 128 or 256 characters, mostly for English. UTF-8 is a character encoding that can represent every character in all languages using 1 to 4 bytes.

Let's understand it simply

Imagine you have a box with 128 small slots. ASCII is like this box—it can only store 128 different things, like English letters (A-Z, a-z), numbers (0-9), and some symbols. But Indian languages like Hindi, Tamil, or Bengali have hundreds of letters and special marks. ASCII just doesn’t have enough slots for them.

UTF-8 is like a huge cupboard with thousands of slots. It can store letters from every language—Hindi (अ, आ, क), Tamil (அ, ஆ, இ), Bengali (অ, আ, ই), and many more. So, if you want to write in your mother tongue on a computer, UTF-8 is the right choice.

ASCII vs UTF-8 for Indian Languages
ASCIIUTF-8
How many characters?128 (English only)Over 1 million (all languages)
Can it store Hindi?NoYes
Can it store Tamil?NoYes
Used for?Old English text, simple filesWebsites, apps, all languages

How it works

  1. ASCII uses 7 bits (sometimes 8) for each character. Only 128 (or 256) characters can be stored.
  2. UTF-8 uses 1 to 4 bytes for each character. It can store over a million different characters.
  3. When you type an Indian letter, UTF-8 gives it a unique code, so the computer knows exactly which letter it is.
  4. ASCII cannot give codes to Indian letters because it runs out of space.

The story behind it

ASCII was made in the 1960s in the USA for English and some basic symbols. At that time, computers were mostly used in English-speaking countries. As computers spread to the whole world, people needed to type in their own languages. Unicode and UTF-8 were created later (in the 1990s) to solve this problem, so everyone could use computers in their own language.

Where you see it in real life

  • Sending a WhatsApp message in Hindi: The message uses UTF-8 to store and send Hindi letters.
  • Typing in Tamil on a website: The website uses UTF-8 to show Tamil script correctly.
  • Government forms in Marathi/Bengali: Online forms use UTF-8 so people can fill them in their own language.
  • Reading news in Telugu on your phone: The app uses UTF-8 to display Telugu letters.

Why it matters

  • Lets people use computers and phones in any Indian language.
  • Helps save and share documents, emails, and websites in your mother tongue.
  • Makes sure names, addresses, and messages are not lost or shown as question marks (like "?????").
  • Needed for exams, government work, and jobs that use Indian languages.

Common mistakes

  • Thinking ASCII can store Hindi or Tamil letters. It cannot.
  • Believing UTF-8 is only for English. It is for all languages.
  • Confusing UTF-8 with Unicode. Unicode is the big list of all characters; UTF-8 is one way to store them.

Remember it

ASCII is for English. UTF-8 is for every language—including yours!

Check yourself

Why can't ASCII store Hindi letters?

ASCII only has 128 slots, not enough for Hindi letters.

What does UTF-8 allow you to do on your phone?

Type and read messages in any Indian language.

Is UTF-8 only for English? Why or why not?

No, UTF-8 is for all languages because it has space for every character.

Quick recap

  • ASCII can only store English letters and symbols.
  • UTF-8 can store letters from all Indian languages.
  • UTF-8 is needed for Hindi, Tamil, Bengali, and more.
  • ASCII is too small for Indian scripts.
  • UTF-8 is used in websites, apps, and messages.
Written by the LLOS.ai tutor, checked against NCERT chapters. Asked by Anonymous from Dallas, United States on 24 Oct 2026, 2:40 AM IST