Javascript Lowercase to Uppercase conversion

This javascript lowercase to uppercase converter is used convert the lowercase letter to upper case. This case converter is for free use.


  • You can convert the lowercase letters in textarea to uppercase letters using this javascript case converter.
  • This is a free case converter.
  • Just copy the code and use it.


Lowercase To Uppercase Converter

Type Lowercase Letters


<!-- Script by -->
<script type="text/javascript">
function up(lstr)
var str=lstr.value;lstr.value=str.toUpperCase();
Type lowercase Letters<textarea name="lcase" onkeyup="up(this)"></textarea>
&copy;<a href="" style="color:#3D366F;font-size:12px;cursor:pointer;text-decoration:none;"></a>
<!-- Script by -->

  • Release Date - 07-04-2008
  • Get free version without ©copyright link for just $10/-
  • For customization of this script or any script development, mail to


  • Create the form by copying the above code.
  • The javascript function up() is triggered on when the letter is typed and it will convert the letter into uppercase.
  • Just copy the javascript code and use it for free.


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