Underline Text Generator
Type your text and get it back underlined — l̲i̲k̲e̲ ̲t̲h̲i̲s̲ — or with a double underline. The line is made of Unicode combining characters, so it stays with the text when you paste it into a bio, a comment or a message that offers no underline option. Free, no sign-up.
Underline (single)
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Double underline
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How to Use the Underline Text Generator
- Type or paste your text. A single and a double underline version appear as you type.
- Choose the line. Single underline is the usual choice; double underline adds emphasis and looks more like a ruled heading.
- Copy it. Press Copy on the version you want and paste it into your bio, post, comment or message.
- Preview it where it will be read. Fonts draw the lines a little differently, so look at it on the platform and device you are posting to.
How the Underline Is Made
There is no underline character in Unicode. The tool adds a combining character after every letter, a mark that is drawn on the character before it, and in these two cases it is drawn below. Both are in the Combining Diacritical Marks block (U+0300–U+036F), present since Unicode 1.1:
| Version | Mark | Sample |
|---|---|---|
| Single underline | U+0332 COMBINING LOW LINE | T̲u̲e̲s̲d̲a̲y̲ |
| Double underline | U+0333 COMBINING DOUBLE LOW LINE | T̳u̳e̳s̳d̳a̳y̳ |
Every character, spaces included, gets a mark, so the line runs under the whole phrase: "Read the terms" becomes R̲e̲a̲d̲ ̲t̲h̲e̲ ̲t̲e̲r̲m̲s̲. In fonts that draw the low line at full character width, neighbouring marks join into one continuous line; in others you see a row of short dashes. Letters with descenders — g, j, p, q, y — are crossed by the line, as in g̲y̲p̲s̲y̲ ̲j̲u̲m̲p̲y̲. Each mark is a code point of its own, so underlined text has twice as many code points as the plain text: "Read the terms" is 14 characters but 28 code points, which counts against any character limit that works on code points.
Real Underlining and Where to Find It
In Word and Google Docs underline with Ctrl+U (Cmd+U on a Mac); in HTML use the <u> element or the CSS property text-decoration: underline. Discord supports underline typed as two underscores on each side (__text__). WhatsApp has no underline format. Real underlining stays one piece of ordinary text, so it can be searched, read aloud and restyled. Use the Unicode version only where no formatting is offered, such as most social bios and display names.
Underline can look like a link
On the web, readers expect underlined text to be clickable. An underlined phrase in a bio or caption that goes nowhere can read as a broken link. Use it for a short label or a heading, and consider bold (see the Bold Text Generator) when you only want emphasis.
Which Tool Do You Need?
| You want | Use |
|---|---|
| A line under the text | This page |
| A line through the text | Strikethrough Text Generator |
| Marks stacked above and below the letters, for a creepy effect | Glitch Text Generator |
| Emphasis without lines | Bold Text Generator |
A note on accessibility
Screen readers are not told that the text is underlined. Depending on the software they may announce each combining mark ("combining low line"), spell the word, or read the plain letters and say nothing about the underline. Spell check, translation and search also fail to recognise underlined words, so do not use it for essential information such as dates, names or instructions.
Frequently Asked Questions
- How do I underline text in an Instagram bio or comment?
- Instagram offers no underline button there, so type your text above, copy the underlined version and paste it in. The underline is a combining character after each letter, so it survives the paste.
- How does Unicode underline work?
- The tool adds U+0332, the combining low line, after every character you type. A combining mark has no width and is drawn under the character before it, so the whole run looks underlined. The double version uses U+0333.
- Why do my underlines look uneven or broken?
- Each letter carries its own mark, and fonts position and join those marks differently. Descenders collide with the line, and some apps draw the marks as short separate dashes. You can try the double version or another platform, but the text itself cannot control it.
- What is the difference between single and double underline?
- Single uses U+0332 and double uses U+0333, which draws two stacked lines. They carry the same meaning; double is a little heavier and may look more like a heading.
- How do I underline in Discord or Word?
- In Discord put two underscores on each side of the text (
__text__). In Word and Google Docs press Ctrl+U (Cmd+U on a Mac). Those methods give real underlining that stays ordinary text. - Can I remove the underline from copied text?
- Delete or replace the combining low line (U+0332) or double low line (U+0333) characters, using find and replace in an editor that accepts escape codes. The Unicode Character Inspector shows exactly which marks are in a piece of text.