Lambda Symbol (λ)

Lambda 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.

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Copy the lambda symbol One click copies the exact Unicode character.

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Copy
Press the button to copy λ.
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Use Ctrl+V, Command+V, or the mobile Paste command.

Greek textVariablesScientific notationSymbol references

What Is the Lambda Symbol?

λ is U+03BB GREEK SMALL LETTER LAMDA, commonly written “lambda” in English. It is a Greek letter that can be assigned different meanings in mathematics, physics, computing, and other fields.

Greek text

Variables

Scientific notation

Symbol references

Related forms

Lambda Symbol Variants and Related Forms

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How to Type the Lambda Symbol

Choose your device or app to insert the lambda symbol without copying it from another page.

Lambda 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.

Lambda Symbol on Mac

Open Character Viewer with Control+Command+Space and search for “greek small letter lamda.”

Lambda 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.

Lambda Symbol on Android

Use the Copy button to copy λ, then paste it into the target app. Keyboard and emoji menus vary by device.

Lambda Symbol on Chromebook

Copy λ from this page and press Ctrl+V. A supported character picker may also be available.

Lambda Symbol on Microsoft Word

Paste λ into Word. For a single BMP character, Word can also convert its hexadecimal code with Alt+X.

Lambda Symbol on Google Docs

Paste λ into Google Docs, or use Insert > Special characters and search by the Unicode name or page title.

Lambda Symbol Unicode and HTML Codes

Use these values when you need the lambda symbol in HTML, CSS, source code, or a character reference.

Unicode U+03BB

Unicode name GREEK SMALL LETTER LAMDA

HTML decimal λ

HTML hex λ

CSS escape 3BB

How to Use and Format the Lambda Symbol

Format λ according to its role as lambda notation. λ is U+03BB GREEK SMALL LETTER LAMDA, commonly written “lambda” in English. It is a Greek letter that can be assigned different meanings in mathematics, physics, computing, and other fields. For the lambda 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 the Greek character; the Wavelength Symbol page is limited to λ as a physical quantity. For web content containing the lambda symbol, literal UTF-8 text is preferred when the font supports it; complete decimal or hexadecimal references are also valid. When the lambda 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.

Preserve the Greek code point rather than a Latin lookalike.
Define the field-specific meaning at first use.
Keep uppercase Λ and lowercase λ distinct.
Use the exact encoded form U+03BB for lambda 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.

Lambda Symbol Examples

Greek letter: λ
Variable: λ = 0.5
Function notation: λx.x
Eigenvalue label: λ₁
Greek sequence: κ, λ, μ
Unicode sequence for Lambda Symbol: U+03BB
HTML decimal: λ
HTML hexadecimal: λ
CSS escapes: 3BB
Accessible text label: Lambda Symbol

Common Lambda Symbol Mistakes

Assuming λ always means wavelength.
Replacing λ with a Latin lowercase l.
Changing λ to uppercase Λ without checking the notation.
Leaving a technical λ undefined when several meanings are possible.
Replacing the lambda symbol with a lookalike without checking the code point or sequence.
Assuming the lambda symbol has exactly the same glyph in every font and operating system.
Converting the lambda 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 Lambda Symbol

Lambda Symbol covers lowercase Greek lambda, λ, encoded as U+03BB GREEK SMALL LETTER LAMDA. English-language text normally spells the letter “lambda,” while the Unicode character name retains “LAMDA.” Both names refer to the same code point on this page.

As an alphabetic symbol, λ can be assigned by many disciplines. The reviewed examples include a plain variable, an eigenvalue label such as λ₁, and lambda-expression notation such as λx.x. Each use gets its meaning from the formula, programming language, or surrounding definition. The page should not select one of those meanings as the universal definition of lambda.

Case and script remain important. Uppercase lambda Λ is another character, and Latin letters or decorative mathematical alphabets are not substitutes for U+03BB. Copying from a styled equation can introduce a mathematical alphanumeric symbol rather than the ordinary Greek letter.

Wavelength also commonly uses λ, but that is a narrower physical-quantity intent. The Wavelength Symbol page discusses units, frequency relations, and measurement examples; this page remains the general Greek-letter reference. The shared glyph is documented rather than hidden, which prevents two pages from repeating the same explanation.

Literal UTF-8 λ is suitable for most web source. The existing Unicode, HTML, and accessibility references support the encoded identity and readable labeling. Any additional use should be added only when a field-specific source and a distinct search intent justify it.

To test Lambda Symbol in realistic text, use Greek letter: λ, Variable: λ = 0.5, Function notation: λx.x, Eigenvalue label: λ₁, and Greek sequence: κ, λ, μ. For Lambda Symbol, these strings cover greek text, variables, scientific notation, and symbol references and help reveal font, spacing, or copy errors that a standalone λ may not show.

Keep the Lambda Symbol value at U+03BB; then check the following instructions: Preserve the Greek code point rather than a Latin lookalike. Define the field-specific meaning at first use. Keep uppercase Λ and lowercase λ distinct. The Lambda Symbol page relies on Unicode, W3C/WCAG, and WHATWG HTML, and its approved aliases include lambda and Greek Small Letter Lamda.

Continue exploring: Proportional Symbol (∝) , Sagittarius Symbol (♐) , Beta Symbol (β) and Yuan Symbol (¥) . You can also browse all symbols.

Lambda Symbol FAQ

What is the lambda symbol?