Wavelength Symbol Copy and Paste
Select Copy to place λ on the clipboard. Paste with Ctrl+V on Windows, Command+V on Mac, or the Paste command on mobile.
Use the homepage to browse copy and paste symbols across the wider symbol library.
- 1Copy
Press the button to copy λ.
- 2Place the cursor
Open the message, document, form, or profile where you need it.
- 3Paste
Use Ctrl+V, Command+V, or the mobile Paste command.
What Is the Wavelength Symbol?
The Greek small letter lambda, λ, commonly denotes wavelength. A wavelength value should be reported with an appropriate unit, such as m, nm, or µm.
Physics equations
Engineering reports
Measurement tables
Science education
Related forms
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How to Type the Wavelength Symbol
Choose your device or app to insert the wavelength symbol without copying it from another page.
Wavelength Symbol on Windows
In Microsoft Word, type 03BB and press Alt+X. In other Windows apps, use Character Map or copy λ from this page.
Wavelength Symbol on Mac
Open Character Viewer with Control+Command+Space and search for “greek small letter lamda.”
Wavelength Symbol on iPhone and iPad
Use the Copy button to copy λ, then paste it into the target app. Save a text-replacement shortcut only if the exact sequence is preserved.
Wavelength Symbol on Android
Use the Copy button to copy λ, then paste it into the target app. Keyboard and emoji menus vary by device.
Wavelength Symbol on Chromebook
Copy λ from this page and press Ctrl+V. A supported character picker may also be available.
Wavelength Symbol on Microsoft Word
Paste λ into Word. For a single BMP character, Word can also convert its hexadecimal code with Alt+X.
Wavelength Symbol on Google Docs
Paste λ into Google Docs, or use Insert > Special characters and search by the Unicode name or page title.
Wavelength Symbol Unicode and HTML Codes
Use these values when you need the wavelength symbol in HTML, CSS, source code, or a character reference.
U+03BB
GREEK SMALL LETTER LAMDA
λ
λ
3BB
How to Use and Format the Wavelength Symbol
Format λ according to its role as wavelength notation. The Greek small letter lambda, λ, commonly denotes wavelength. A wavelength value should be reported with an appropriate unit, such as m, nm, or µm. For the wavelength symbol, do not choose a character only because it looks similar to another glyph; verify U+03BB and keep the complete sequence together.
This page covers λ as a physical quantity; the Lambda Symbol page covers the Greek letter without assigning one meaning. For web content containing the wavelength symbol, literal UTF-8 text is preferred when the font supports it; complete decimal or hexadecimal references are also valid. When the wavelength symbol conveys an action, category, identity, hazard, measurement, or other essential information, pair it with readable text and an accessible name rather than relying on shape alone.
Define λ as wavelength at first use.
Put one space between the number and SI unit.
Use correct SI prefixes and case.
Use the exact encoded form U+03BB for wavelength symbol content.
Use UTF-8 text or complete numeric character references when publishing λ on the web.
Test λ in the target font, application, and screen-reader workflow.
Keep a visible text label near λ when readers may not recognize the glyph.
Wavelength Symbol Examples
Visible light: λ = 550 nmRelation: c = fλTelecom wavelength: λ = 1.55 µmPeak wavelength: λmaxWavelength interval: 400 nm ≤ λ ≤ 700 nmUnicode sequence for Wavelength Symbol: U+03BBHTML decimal: λHTML hexadecimal: λCSS escapes: 3BBAccessible text label: Wavelength Symbol
Common Wavelength Symbol Mistakes
- Writing a wavelength value without a unit.
- Confusing wavelength λ with frequency f.
- Using uppercase Λ without a defined reason.
- Using the Lambda character page as a substitute for a physics definition.
- Replacing the wavelength symbol with a lookalike without checking the code point or sequence.
- Assuming the wavelength symbol has exactly the same glyph in every font and operating system.
- Converting the wavelength symbol to an image when selectable and searchable text is required.
- Using λ as the only accessible name of an interactive control.
More About the Wavelength Symbol
Wavelength Symbol uses λ for the physical distance associated with one cycle of a wave. A wavelength value is incomplete without a unit and a description of the wave or spectrum being measured. Common units include metres, nanometres, and micrometres.
The relation c = fλ is a familiar example for electromagnetic waves in vacuum, connecting propagation speed, frequency, and wavelength. A telecom specification may use λ = 1.55 µm, while visible-light material may give values in nanometres. The unit scale must remain attached to the number; λ alone is only the variable.
This page is intentionally narrower than the Lambda Symbol page. Both store U+03BB, but the general page identifies the Greek letter and its many possible assignments. Here the examples, units, and explanatory text are limited to wavelength as a physical quantity. That separation allows readers to choose the correct page by intent instead of by glyph alone.
Formatting should keep the variable distinct from the unit. The lambda is commonly typeset as a variable, while m, nm, and µm are unit symbols governed by measurement style. A table heading should identify the measured medium or band when that information affects interpretation.
The source set combines Unicode with NIST measurement guidance and accessibility references. It supports the code point, unit-aware examples, and the need for explicit labels. The page does not add unsupported claims about every field that happens to use lambda.
Practical strings already approved for Wavelength Symbol include Visible light: λ = 550 nm, Relation: c = fλ, Telecom wavelength: λ = 1.55 µm, Peak wavelength: λmax, and Wavelength interval: 400 nm ≤ λ ≤ 700 nm. For Wavelength Symbol, they are drawn from physics equations, engineering reports, measurement tables, and science education and should remain available as regression tests after any content or template update.
For encoded output on Wavelength Symbol, confirm that λ still resolves to U+03BB. The Wavelength Symbol rules state: Define λ as wavelength at first use. Put one space between the number and SI unit. Use correct SI prefixes and case. Verification sources for Wavelength Symbol include Unicode, W3C/WCAG, WHATWG HTML, and NIST, with wavelength and Greek Small Letter Lamda retained as lookup terminology.
Continue exploring: Epsilon Symbol (ε) , Psi Symbol (ψ) , Pause Symbol (⏸) and Therefore Symbol (∴) . You can also browse all symbols.
Wavelength Symbol FAQ
What is the wavelength symbol?
The Greek small letter lambda, λ, commonly denotes wavelength. A wavelength value should be reported with an appropriate unit, such as m, nm, or µm.
What is the Unicode for λ?
The encoded form is U+03BB: GREEK SMALL LETTER LAMDA.
How do I type λ?
Windows: In Microsoft Word, type 03BB and press Alt+X. In other Windows apps, use Character Map or copy λ from this page. Mac: Open Character Viewer with Control+Command+Space and search for “greek small letter lamda.”
What units are used with λ?
The SI unit is the metre; nm and µm are common submultiples.
Is λ always wavelength?
No. This is one common field-specific use of the Greek letter lambda.