# Bold & Italic Text Convert text to bold, italic, or bold-italic using the Mathematical Alphanumeric Symbols Unicode block. Plain Unicode text β€” no font needed. > Canonical page: https://elysiatools.com/en/tools/bold-italic-text - **Category:** Text Processing - **Keywords:** bold text, italic text, bold italic, unicode text, mathematical alphanumeric ## Overview This tool restyles your text into the **Mathematical Alphanumeric Symbols** Unicode block, producing **bold**, **italic**, or **bold italic** glyphs (π‡πžπ₯π₯𝐨 / π»π‘’π‘™π‘™π‘œ / 𝑯𝒆𝒍𝒍𝒐). The output is plain Unicode text β€” no font, no markdown β€” so it renders as styled text in social posts, chat, docs, and more. **How it works:** - Each Latin letter is replaced by its bold/italic/bold-italic counterpart from U+1D400–U+1D7FF. - Characters without a styled counterpart β€” punctuation, digits, spaces, CJK, emoji β€” pass through unchanged. - One known gap: Unicode has **no italic capital H glyph** (the slot U+1D45B is reserved). A capital `H` in italic mode therefore stays as a normal `H` rather than being shrunk to the small-italic β„Ž β€” this keeps case correct. **Choosing a style:** - **Bold** β€” strong emphasis, headings. - **Italic** β€” light emphasis, titles, variable names in math notes. - **Bold Italic** β€” combined emphasis where both weight and slant matter. **Good to know:** - The result is plain text, so it works even where formatting is stripped, but search engines and screen readers may not map these back to plain letters β€” avoid for accessibility- or SEO-critical text. ## Inputs - **Text** (textarea): Type or paste text to make bold / italic... - **Style** (select) ## When to use - When writing social media posts or bios on platforms that do not support native rich text formatting. - When highlighting variables or mathematical terms in plain text notes and documentation. - When creating distinct headings or emphasizing specific words in chat applications and messaging clients. ## How it works - Enter your text into the input field and select your desired style: Bold, Italic, or Bold Italic. - The tool maps each Latin letter to its corresponding mathematical alphanumeric character within the U+1D400–U+1D7FF Unicode range. - Non-Latin characters, numbers, spaces, and punctuation are preserved in their original format. - Copy the generated Unicode text directly to your clipboard for use in any text field. ## Use cases - Formatting social media profile names and bios to stand out. - Emphasizing key terms in plain text emails and messaging apps. - Writing mathematical variables and formulas in plain text notes. ## Frequently asked questions ### Do I need to install a special font to view the styled text? No, the output uses standard Unicode symbols that render automatically on most modern devices and platforms. ### Why does the capital letter H remain unchanged in italic mode? The Unicode specification lacks a dedicated italic capital H glyph in this block, so it is left unmodified to preserve correct casing. ### Can I use this styled text for SEO-critical content or website headings? No, search engines and screen readers cannot reliably index or read these mathematical symbols as standard letters. ### What happens to numbers, punctuation, and emojis? They pass through the converter unchanged, as the mathematical alphanumeric block only contains styled Latin letters. ### Will this formatting work in chat apps like Slack, Discord, or WhatsApp? Yes, because the output is plain Unicode text, the styling remains intact when pasted into chat applications. ## Related tools - [Indented List to ASCII Tree](https://elysiatools.com/en/tools/ascii-tree-from-indented-list): Convert a 2-space / 4-space / Tab indented hierarchical list (Markdown bullets, -, *, 1. prefixes optional) into a copyable ASCII directory tree. Two styles: Unicode box-drawing (β”œβ”€β”€β””β”€β”€β”‚) for GitHub/Discord and classic ASCII (|--\--|) for plain text. 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Standard formula AG = Na⁺ βˆ’ Cl⁻ βˆ’ HCO₃⁻ (mmol/L), or AG = Na⁺ + K⁺ βˆ’ Cl⁻ βˆ’ HCO₃⁻ with optional potassium. A high AG (β‰ˆ >12, or >20 with K⁺) indicates accumulation of unmeasured anions (lactic acidosis, ketoacidosis, renal failure, and toxins such as methanol/ethylene glycol, salicylates β€” mnemonic GOLD-MARK). A normal AG (8–12) during metabolic acidosis points to a hyperchloremic (normal-anion-gap) acidosis: diarrhea, renal tubular acidosis, saline resuscitation. A low AG (<3–6) is usually hypoalbuminemia, also hypercalcemia/hypermagnesemia, lithium, cationic IgG paraproteins, or bromide pseudo-hyperchloraemia. Optional albumin correction AG_corrected = AG + 2.5 Γ— (4.0 βˆ’ albumin g/dL) avoids missing a high-AG acidosis in hypoalbuminemia. Derived from Kraut CJASN 2007, Figge 1998, and MDCalc. Interpret with blood gas and full clinical context. 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