Planck Constant Letter
ℎ (U+210E) is the Planck constant symbol, often used in technical and scientific text as a stylized lowercase h.
U+210E
This page helps you copy the ℎ character exactly as written: Unicode U+210E. It also provides reliable ways to include it in HTML, CSS, and JavaScript.
Planck Constant Letter Meaning
ℎ is the Unicode character named “PLANCK CONSTANT” with code point U+210E. Visually, it’s a stylized lowercase h used in scientific and technical writing to represent Planck’s constant. In everyday contexts, you’ll mostly see it in physics formulas, measurements, or educational content, where distinguishing it from a plain “h” can improve clarity or typographic consistency. If you need a plain italic h for non-physics writing, use a normal “h” instead—ℎ is specifically encoded for the Planck constant glyph.
Common uses
- •Physics equations and formula labels involving Planck’s constant
- •Educational materials and worksheets on quantum or modern physics
- •Scientific slide decks where typographic precision matters
- •Math/engineering notes where “h” should be visually distinct from text h
- •Web content that requires the dedicated Planck constant glyph (U+210E) instead of plain text
Examples
ℎ Planck constant (lowercase h)
- ℎE = hν
- ℎThe constant is ℎ and has units of J·s.
- ℎIn the equation, ℎ multiplies the frequency.
- ℎPlanck’s law uses ℎ in the proportionality.
- ℎMeasured values depend on the chosen ℎ symbol styling.
Variations
Technical codes
| Unicode | U+210E | |
| HTML Entity | ℎ | |
| HTML Code | ℎ | |
| CSS | \210E | |
| Alt Code | Alt + 8462 | |
| Decimal | 8462 |
How to type Planck Constant Letter (ℎ)
On Windows
Hold Alt and type 8462 on the numeric keypad. In Word, type 210E then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 210E. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 210e, then press Enter or Space.
Anywhere
Copy ℎ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Planck Constant letter mean?
ℎ is the Unicode character named “PLANCK CONSTANT” with code point U+210E. Visually, it’s a stylized lowercase h used in scientific and technical writing to represent Planck’s constant. In everyday contexts, you’ll mostly see it in physics formulas, measurements, or educational content, where distinguishing it from a plain “h” can improve clarity or typographic consistency. If you need a plain italic h for non-physics writing, use a normal “h” instead—ℎ is specifically encoded for the Planck constant glyph.
What Unicode character is ℎ?
ℎ is named “PLANCK CONSTANT” and has Unicode code point U+210E.
How do I copy ℎ reliably?
Copy the character directly from this page. For code, use the provided escapes like HTML ℎ or CSS \210E.
Is ℎ the same as the normal letter “h”?
No. ℎ is a dedicated Unicode glyph for the Planck constant, while “h” is a regular lowercase letter.
Where can I use ℎ (web or code)?
You can include it in HTML using ℎ, in CSS using \210E, and in JavaScript using \u{210E}.