Underline Text Generator — Unicode Underline Online
Type your text, pick an underline style, and copy the result. The Unicode combining underline method works in most social media platforms, messaging apps and anywhere plain text is supported.
Underline style
Number of characters in your original text
How does this calculator work?
Append the Unicode combining underline character (U+0332) after each character to underline text in plain-text fields. The result is copy-pasteable into social media, chat apps and anywhere that supports Unicode. For HTML documents, use the standard <u> tag instead. Pick your style above and copy the output.
Formula
How this is calculated
Standard text formatting (bold, italic, underline) is stripped from plain-text fields like Twitter, WhatsApp, and most form inputs — the browser ignores any HTML or markdown. Unicode offers a workaround: the combining underline character (U+0332, "combining low line") is a zero-width mark that attaches visually below the preceding character. By inserting it after each character of your text, the resulting string looks underlined when rendered in most Unicode-capable fonts.
The double underline variant uses U+0333 (combining double low line) for a bolder effect. Both methods are purely cosmetic: screen readers may pronounce each combining character separately, and text-to-speech will not read them as underlined — so use sparingly and avoid for accessibility-critical content.
For HTML web pages or rich-text editors, the standard approach is the HTML <u> tag, which is correctly handled by assistive technology. This generator produces whichever format you choose, ready to copy and paste.
Frequently asked questions
Yes — the combining underline (U+0332) is plain Unicode text, so it pastes and displays in most social media and messaging apps that use standard Unicode fonts. Support is very broad, though a few systems with limited font rendering may show it differently.
Plain text contains only characters, not formatting instructions. The underline button in word processors adds markup that is stripped when you paste into a plain-text field. Unicode combining characters are the only way to embed a visual underline in plain text.
Not reliably. Screen readers may announce the combining character or skip it inconsistently. For accessible web content, always use proper HTML <u> or CSS text-decoration instead of the Unicode trick.
Also known as
TG we-Calculate Editorial Team. (2026). Underline Text Generator — Unicode Underline Online [Online calculator]. TG we-Calculate. https://we-calculate.com/calculator/underline-text-calculator
TG we-Calculate Editorial Team. "Underline Text Generator — Unicode Underline Online." TG we-Calculate. 2026. https://we-calculate.com/calculator/underline-text-calculator.
TG we-Calculate Editorial Team, "Underline Text Generator — Unicode Underline Online," TG we-Calculate, 2026. [Online]. Available: https://we-calculate.com/calculator/underline-text-calculator
@misc{wecalculate_underline_text_calculator, title = {Underline Text Generator — Unicode Underline Online}, author = {{TG we-Calculate Editorial Team}}, howpublished = {\url{https://we-calculate.com/calculator/underline-text-calculator}}, year = {2026}, note = {TG we-Calculate} }
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