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Uppercase Text File

Convert a UTF-8 text file to uppercase.

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Max 100 MB per file · TXT, TEXT, LOG

    Text options

    UTF-8 files only. Up to 300,000 characters per file.

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    Free No watermark No sign-up Files never uploaded
    Strange characters?Save the file as UTF-8 first (Notepad: Save as → Encoding: UTF-8).
    Turkish text?Choose Turkish so i becomes İ correctly.
    Need the original back?Keep it — mixed case cannot return.

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    How to use Uppercase Text File

    1. Select your text files.Add UTF-8 text files up to 2 MB — names, codes or labels.
    2. Choose the text language.This keeps special letters correct when they become capitals.
    3. Click Uppercase Text File.Only letters change; numbers, spaces and line breaks stay put.
    4. Check the text.Every letter should now be a capital.

    About Uppercase Text File

    When is it useful? Uppercase Text File changes every letter in a .txt file to CAPITAL letters in one step. It is handy for headings and labels, product codes, names that a form or database wants in block letters, and lists that must match an official register written in capitals.

    Good to know: only letters change; numbers, spaces, punctuation and line breaks stay exactly where they were. Choose the text language when it matters — in Turkish, i becomes the dotted capital İ, and the German ß becomes SS. Hindi, Kannada, Telugu and Tamil scripts have no capital letters, so that text stays the same. The file must be saved as UTF-8 and can be up to 2 MB.

    Tips for Better Results

    • Save the file as UTF-8 first — in Notepad use File → Save as → Encoding: UTF-8.
    • Choose Turkish as the text language for Turkish text, so i becomes İ correctly.
    • Keep your original file: Lowercase Text File can turn capitals back into small letters, but it cannot bring back the original mix of capital and small letters.

    Frequently Asked Questions

    What happens to German ß?
    It becomes SS, as the uppercase rules require.
    Do Hindi or Tamil letters change?
    No. Hindi, Kannada, Telugu and Tamil have no capital letters, so that text stays the same.
    Can I undo uppercase later?
    Lowercase Text File makes small letters again, but it cannot bring back the original mix of capitals.
    Works with: Notepad · TextEdit · VS Code · Excel imports · most text editors

    What converts well, and what doesn't

    In your fileAfter uppercase
    LettersBecome CAPITAL letters
    Numbers, spaces, punctuation, line breaksStay exactly where they were
    German ßBecomes SS
    Hindi, Kannada, Telugu, TamilStay the same (no capitals)
    Original mix of capitalsCannot be brought back — keep your original
    💡 Tip: Keep your original file — Lowercase Text File cannot bring back the original mix of capital and small letters.

    Common uses

    LabelsBlock-letter labels.
    HeadingsCapital headings.
    Product codesConsistent codes.
    FormsNames in block letters.
    DatabasesUppercase data.
    RegistersMatch official lists.

    Is my file safe?

    Browser processing: your files are processed on your own device and are never uploaded to our server.

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    Guide

    Uppercase Text File: a complete guide

    When capital letters are required

    Some systems and documents expect text in capital letters: official registers and certificates, airline and bank name fields, product codes and SKUs, shipping labels, legal headings and sign boards. Retyping a long list in capitals is slow and easy to get wrong.

    How it works

    Upload a UTF-8 .txt file of up to 2 MB. Every letter is changed to its capital form using the rules of the language you choose — Default, English, Turkish, German, Greek, Hindi, Kannada, Telugu or Tamil. Numbers, spaces, punctuation and line breaks stay exactly as they were, and you download a new text file.

    Language details

    Language rules matter for some letters: Turkish has a dotted capital İ and a dotless I, German ß becomes SS, and Greek has its own accent rules. Indian scripts such as Devanagari, Kannada, Telugu and Tamil have no capital letters, so text in them stays the same.

    Common problems and how to fix them

    “Not valid UTF-8”: save the file again as UTF-8 in your editor. Some words should stay in normal case, such as email addresses: fix them by hand afterwards. The file is too large: split it into parts under 2 MB.

    Good habits

    Keep your original file, check names after converting, and use Lowercase Text File for the opposite job.

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