Uppercase I (I) is the Basic Latin character at Unicode U+0049 (LATIN CAPITAL LETTER I). It is a core vowel of the Latin alphabet and a core ASCII character. You can type I directly in HTML, or write a numeric character reference when you need an explicit entity form.
Remember
Character I
Unicode U+0049
Hex entity I
Decimal I
CSS escape \49
Named entity (none)
Not the same Í · İ · Ι
Prefer typing I in normal page text. Use I / I for CSS content, generated markup, or when encoding must be explicit.
Using Hex Code: I
Using HTML Code: I
Using CSS Entity: I
Typed directly: I
Example: Letter I is a vowel.
How It Works
1. Hex / decimal:U+0049 → I or I. The browser turns either into I.
2. Typed: most keyboards can type I directly in UTF-8 HTML — usually the simplest option.
3. CSS: use \49 in content (not an HTML entity). #point::after appends that I after the paragraph text.
4. Example: write normal text with a typed I for everyday content.
Pitfalls & Tips
Common mistakes when working with Uppercase I.
Type it
Prefer the typed character
For body text, type I. Entities are useful for CSS escapes and generated content, not everyday paragraphs.
Named?
No named entity for plain I
HTML5 does not define &I;. Use I / I, or type I.
Í
Not an accented I
Í is U+00CD. Use accented entity pages when you need diacritics on I.
İ
Not I with dot above
Turkish capital İ (U+0130) keeps a dot. Plain Latin I (U+0049) does not.
Look-alike
I vs l vs 1
In some fonts, capital I, lowercase L, and digit 1 look similar. Choose a clear typeface for code and IDs.
CSS vs HTML
Do not mix escapes
\49 belongs in CSS strings. I / I belong in HTML.
Compatibility
Browser Support
Uppercase I (U+0049) and its entity forms (I, I, CSS \\49) are supported in all mainstream browsers — it is core Basic Latin (ASCII).
✓ Universal support
Uppercase I (I)
Encode with hex, decimal, CSS escape, or type the character — same ASCII code point everywhere.
100%Browser coverage
Google ChromeSupported
Yes
Microsoft EdgeSupported
Yes
Mozilla FirefoxSupported
Yes
Apple SafariSupported
Yes
OperaSupported
Yes
Internet ExplorerAll versions
Yes
U+0049 / entitiesFull support
Bottom line: Prefer typing I in HTML text. Use I / I when you need an entity, and \\49 only inside CSS content.
Remember
Key Takeaways
Unicode: this letter is U+0049 (decimal 73) — glyph I.
HTML: type I, or use I / I — no named entity.
CSS: use \49 inside content for generated text.
Watch out: plain I ≠ Í ≠ İ ≠ Greek Ι.
One line:U+0049 → type I / I / I / CSS \49.
Frequently Asked Questions
Type I directly, or use I (hex), I (decimal), or the CSS escape \49 in content. There is no named HTML entity for U+0049.
U+0049 (LATIN CAPITAL LETTER I). Hex 49, decimal 73. It belongs to Basic Latin (ASCII).
No. Plain ASCII letters do not have named HTML entities. Use numeric references like I or I when you need an entity form.
Prefer typing I in normal page text. Use entities for CSS content, generated markup, or when encoding must be explicit.
HTML entities (I or I) go in markup. The CSS escape \49 goes in stylesheet strings (usually content on ::before/::after).
No. I is Latin capital I (U+0049). Í is I with acute (Í, U+00CD). İ is I with dot above (U+0130). Ι is Greek capital Iota (Ι, U+0399).
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Did you know?
Uppercase I (I) is Unicode U+0049 (decimal 73) — LATIN CAPITAL LETTER I in Basic Latin (ASCII). HTML5 has no named entity for it — type I directly, or use I / I when you need an entity form. Do not confuse it with accented forms like Í (Í), dotted İ (U+0130), or Greek Iota (Ι, Ι).
