What Is an Underline Text Generator?
For a short plain-text underline trial, compare Standard and Double Underline first. The other rows do different jobs: three below-marks, two literal wrappers and a separate row of overline characters. If your document editor offers underline formatting, use that for a normal heading instead of changing the text.
How to Use the Underline Text Generator
- Keep the ordinary source, then enter a heading or choose the multiline Sample.
- Compare Standard and Double for low lines. Read the other row labels before choosing them.
- Choose the named Copy button. If it fails, select the output and copy manually.
- Check the pasted and saved text in its receiving field; restore the source if it is clipped or unclear.
How the Underline Text Generator Works
Standard adds U+0332; Double adds U+0333. Diaeresis Below uses U+0324, Minus Sign Below U+0320 and Tilde Below U+0330. Those three diacritics are not CSS dotted, dashed or wavy lines. Each mark is appended after a complete non-whitespace grapheme cluster. Spaces, tabs and physical line endings stay plain; accents and joined sequences stay contiguous before the added mark. Existing marks remain and can stack.
Bracket Wrapper surrounds the full source. Underscore Wrapper adds one literal underscore at each end, which a receiver may interpret as markup. Standard Underline also appears in the Font Generator; this comparison includes different below-marks and a row-layout experiment.
See the Unicode 17 names list and text segmentation guidance, checked October 15, 2026. Browser segmentation and receiving fonts still determine the actual result.
Underline Text Generator Example
| Operation | Output |
|---|---|
| Standard Underline | A̲ 1̲ |
| Double Underline | A̳ 1̳ |
| Diaeresis Below | A̤ 1̤ |
| Minus Sign Below | A̠ 1̠ |
| Tilde Below | A̰ 1̰ |
| Bracket Wrapper | [ A 1 ] |
| Underscore Wrapper | _A 1_ |
| Overline Row | A 1
‾‾‾ |
Overline Row adds a separate U+203E row beneath each nonempty physical line: one overline per source grapheme, including spaces and tabs. Existing CRLF, CR or LF is reused around the inserted row; an unterminated final line uses LF. Empty lines stay empty. For A\nB, output is A\n‾\nB\n‾; here \n denotes LF, not two copied characters.
When to Use the Underline Text Generator
| Task | Starting point | What to inspect |
|---|---|---|
| Short low-line comparison | Standard or Double Underline | Placement and clipping in the actual field. |
| Compare a below-mark | Diaeresis, Minus Sign or Tilde Below | Separate diacritics, not continuous CSS lines. |
| Literal delimiters | Bracket or Underscore Wrapper | Inner letters stay unchanged; underscores may trigger markup. |
| Two-line layout experiment | Overline Row | Cluster counts do not measure visual width. |
| Document or Discord message | Native formatting | Use the editor’s controls or documented message notation. |
Discord messages document __text__ for underline, which differs from this tool’s one-underscore wrapper. For other literal delimiters, use the Brackets Generator.
Common Mistakes
An overline row is not a measured underline. A tab, wide glyph or wrapped line can make it misalign. Start with two short lines, and keep a readable heading even if the layout fails. Font placement, speech, search and field restrictions vary; Copy success does not establish acceptance.
Input over 25,000 UTF-16 units or 5,000 grapheme clusters, unsupported controls and incomplete Unicode produce editable errors without shortened or stale outputs. Sample or Clear helps you recover. Local counts are not platform budgets. Textareas and clipboard handling may normalize line endings.
Tips for Better Results
Try café 1 with Standard and Double, preserving the accent. Keep the original before repeating an effect, since another conversion adds more marks. Use native heading formatting for important published instructions; for a stroke through text, compare the Strikethrough Text Generator.