Underline Text Generator – Copy & Paste Underlined Text (Single, Double, Bold, Wavy)

Type below to turn your words into u̲n̲d̲e̲r̲l̲i̲n̲e̲d̲ text — then copy and paste it anywhere.

An underline text generator adds a line under your text using Unicode combining marks, so the underline travels with the characters when you copy and paste. Type once, browse single, double, wavy, dashed, and bold underline styles, and paste your underlined text into a bio, post, or username. Free, no app, no sign-up.

What Is an Underline Text Generator?

An underline text generator is a free tool that adds an underline to your text as copy-and-paste characters. Most apps have no underline button, so this tool uses Unicode “combining marks” — special characters that sit under each letter — to create the underline. Because the line is built into the characters, it stays put wherever you paste it: bios, posts, usernames, and messages.

Type your text, pick an underline style, and copy it. No formatting button needed, and nothing to install.

Underline Styles You Can Make

• Underline — the classic single line under your text (t̲e̲x̲t̲).
• Double Underline — two lines for extra emphasis (t̳e̳x̳t̳).
• Wavy Underline — a squiggly line, like a spell-check underline (t̰ḛx̰t̰).
• Dashed & Dotted Underline — broken and dotted lines for a subtle look.
• Bold Underline — thick bold letters with a line under them (𝐛𝐨𝐥𝐝̲).
• Italic, Sans, and Monospace underline — underline combined with other styles.
• Underline + Strikethrough / Overline — layered line effects.

Every style is copy-and-paste and works across apps.

If you want other fonts to stand out, you can try aesthetic fonts, or explore all styles on the Fonts Generator Hub.

Bold Underline & Wavy Underline

Two of the most-searched variations, so here’s the quick guide:

• Bold underline — combines bold Unicode letters with an underline mark (𝐁𝐨𝐥𝐝̲), the strongest way to make a line of text stand out in a bio or post. Use the Bold Underline or Sans Bold Underline style above.
• Wavy underline — a squiggly underline (w̰a̰v̰y̰) for a softer, decorative or “error-style” look. Use the Wavy Underline (or Bold Wavy) style.

Underline Text for Instagram, Discord, Facebook & WhatsApp

Because these are standard Unicode characters, underlined text pastes into most apps — but each platform is a little different, and here’s the honest picture:

• Instagram — no underline option anywhere, so Unicode underline is the only way to underline your Instagram bio, name, or captions. Works well. Check out our Instagram fonts generator to discover stylish fonts.
• Facebook — no underline button for posts either; paste Unicode underline into posts, comments, and your bio.
• Discord — here’s the honest part: Discord does have a built-in underline for chat messages — just wrap text in __double underscores__ and it underlines properly. Use that in chat. Unicode underline is still useful for usernames, server names, and channels, where Discord’s formatting doesn’t work. Want to style your Discord username? Generate cool and fancy Discord fonts.
• WhatsApp — WhatsApp has built-in bold, italic font, strikethrough, and monospace, but no underline — so Unicode underline fills that gap in chats, and works in your name/About too.

Simple rule: on Discord, use __underscores__ for chat, and Unicode underline for names; everywhere else, Unicode underline is your tool.

Honest Tips & Limits

Some styles show as boxes on older devices. Combining underlines is widely supported, but very layered styles (underline + strike + overline) can render unevenly on older phones. The plain Underline and Bold Underline are the safest.

Don’t overdo layered lines. One clean underline reads well; stacking underline + strikethrough text + overline can look cluttered and may break across apps.

It’s allowed. Underline marks are standard Unicode, so using them doesn’t break any app’s rules.

Frequently Asked Questions

How do I underline text? Type your text in the generator, pick an underline style, tap Copy, and paste it into your bio, post, or message. The underline is built into the characters, so it stays when pasted.

Is the underline text generator free? Yes — completely free, no sign-up, and no download.

Can I get bold underline text? Yes — the Bold Underline style combines bold letters with an underline mark for maximum emphasis.

Is there a wavy underline? Yes — the Wavy Underline style adds a squiggly line under your text.

Does underline text work on Instagram? Yes — Instagram has no underline button, so Unicode underline is the way to underline your bio, name, or captions.

How do I underline on Discord? In chat, wrap text in __double underscores__ for Discord’s built-in underline. For usernames and server names, use the Unicode underline from this tool.

Why does my underlined text show as boxes? The viewing device doesn’t support those combining marks. Use the plain Underline or Bold Underline for the widest compatibility.

Bottom Line

Type your text, pick an underline style — single, double, wavy, dashed, dotted, or bold — and copy it into a bio, post, or username. It’s free and works across apps. Just remember Discord has a built-in underline for chat (__underscores__) and WhatsApp doesn’t have an underline at all (so Unicode fills the gap), and stick to plain or bold underline for the widest device support.