Subscript Generator
Convert your text into tiny lowered subscript letters. Perfect for chemical formulas like H₂O and CO₂, mathematical notation, and creative text styling.
Tip: Numbers 0-9 and letters a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v, x have subscript versions.
Quick Copy: Chemical Formulas
Click any formula to copy it instantly
Quick Copy: Math Notation
Common mathematical subscript patterns
Subscript Character Reference
✓ Supported Letters
a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v, x
✓ Numbers (0-9)
All numbers fully supported
! Not Available
These letters have no Unicode subscript
When to Use Subscript
Chemical Formulas
Write chemical compounds with proper subscript notation for element counts.
Mathematical Indices
Denote array elements, sequence terms, and variable indices.
Scientific Notation
Write isotopes, ions, and scientific measurements.
Programming
Show array subscripts and index notation in documentation.
Academic Writing
Format equations and formulas in papers and presentations.
Social Media
Add unique styling to your posts with lowered text.
Subscript vs Superscript
ₛᵤᵦ Subscript (This Tool)
- • Lowered below the baseline
- • Chemical formulas: H₂O, CO₂
- • Array indices: x₁, x₂, xₙ
- • Logarithm bases: log₁₀
- • Variable subscripts: aᵢ, bⱼ
ˢᵘᵖ Superscript
- • Raised above the baseline
- • Exponents: x², x³
- • Ordinals: 1ˢᵗ, 2ⁿᵈ, 3ʳᵈ
- • Footnotes: text¹
- • Powers: 10⁶
Need superscript? Try our Superscript Generator
How Subscript Text Works
Subscript text uses special Unicode characters that appear smaller and positioned below the normal text baseline. Unlike HTML's <sub> tag which styles regular characters, these are actual separate characters that work anywhere.
Unicode Subscript Ranges
U+2080 to U+2089 (₀₁₂₃₄₅₆₇₈₉)
Various ranges in Latin Extended
Why Some Letters Are Missing
Unicode was designed primarily for linguistic and scientific purposes. Subscript letters were added mainly for phonetic notation (IPA) and scientific formulas. Letters like b, c, d, f, g were never added because they weren't needed for these specific use cases.
Related Tools
- Superscript Generator - Raised text (x², 1ˢᵗ)
- Small Caps Generator - Small capital letters
- Fancy Text Generator - More text styles
Frequently Asked Questions
Why are some letters missing in subscript?▼
Unicode only includes subscript versions for specific letters (a, e, h, i, j, k, l, m, n, o, p, r, s, t, u, v, x) because these were the ones needed for phonetic notation and scientific formulas. Letters like b, c, d, f, g have no subscript equivalents in Unicode.
How do I type chemical formulas like H₂O?▼
Type the element symbols normally (H, O) and use this tool to convert the numbers to subscript. Then combine them: H + ₂ + O = H₂O. You can also use our Quick Copy section for common formulas.
Will subscript text work in Word and Google Docs?▼
Yes! These are Unicode characters that work in any application that supports text, including Microsoft Word, Google Docs, Excel, and more. They'll display correctly without any special formatting.
Can I use subscript in social media posts?▼
Yes, subscript characters work on Twitter, Instagram, Facebook, and most other platforms. They're standard Unicode text that displays correctly for all users.
What's the difference between this and HTML subscript?▼
HTML subscript (<sub>) styles regular characters to appear lowered, but only works in web browsers. Our tool uses actual Unicode subscript characters that work everywhere text is supported - documents, social media, emails, etc.
Can screen readers read subscript text?▼
Screen reader support varies. Numbers are often read correctly, but subscript letters may be announced differently. For accessibility in critical contexts, consider providing alternative text or explanations.