Not Equal To Symbol (≠): Meaning Uses Alt Codes Examples and Complete Guide
Learn everything about the not equal to symbol (≠) including its meaning keyboard shortcuts Alt codes Unicode mathematical applications programming uses and how to type it on Windows Mac Android and iPhone.
Not Equal To Symbol (≠)
The not equal to symbol (≠) is one of the most important mathematical symbols used worldwide. It indicates that two values expressions quantities or objects are not the same. Whether you’re studying mathematics coding software working with spreadsheets or writing academic papers understanding the not equal sign is essential.
The symbol ≠ is widely recognized in algebra arithmetic statistics computer science engineering economics and scientific research. It serves as the opposite of the equal sign (=) helping users express inequality clearly and efficiently.
In this comprehensive guide you’ll learn the meaning history keyboard shortcuts Unicode values mathematical applications programming alternatives and practical examples of the not equal to symbol.
What Is the Not Equal To Symbol?
The not equal to symbol (≠) is a mathematical notation used to indicate that two values or expressions are different.
Symbol
≠
Meaning
Is not equal to
Example
5 ≠ 8
This statement means that five is not equal to eight.
Another example:
x ≠ y
This indicates that the variable x has a different value than y.
Definition of the Not Equal Symbol
The not equal sign combines:
- The equal sign (=)
- A diagonal slash (/)
Together they create:
≠
This notation immediately communicates that equality does not exist between two quantities.
History of the Not Equal To Symbol
Mathematical symbols evolved over centuries to simplify communication.
The equal sign (=) was introduced in 1557 by Welsh mathematician:
Robert Recorde
As mathematics developed scholars needed a symbol to express inequality clearly.
The not equal sign (≠) emerged as a modification of the equal sign with a diagonal slash indicating negation or contradiction.
Today it is part of standard mathematical notation worldwide and is taught in schools from elementary education through advanced university courses.
Meaning of the Not Equal To Symbol
The symbol means:
- Different from
- Not identical to
- Unequal
- Does not have the same value
Examples
| Expression | Meaning |
| 3 ≠ 5 | Three is not equal to five |
| 12 ≠ 7 | Twelve is not equal to seven |
| a ≠ b | Variable a differs from b |
| x + 2 ≠ 10 | Expression is not equal to 10 |
Not Equal Symbol in Mathematics
The symbol is heavily used throughout mathematics.
Arithmetic
Basic calculations often involve comparisons.
Example:
10 ≠ 12
Since the numbers differ the statement is true.
Algebra
In algebra inequalities frequently use the not equal sign.
Example:
x ≠ 0
This means x can be any value except zero.
Another example:
a² ≠ b²
The squares of a and b are not equal.
Geometry
Geometric figures often involve unequal measurements.
Example:
AB ≠ CD
This indicates that line segment AB does not have the same length as CD.
Statistics
Statistical hypothesis testing frequently includes inequality conditions.
Example:
μ ≠ 100
This means the population mean differs from 100.
Calculus
Calculus uses not equal conditions in limits derivatives and functions.
Example:
x ≠ 1
A function may be defined for all values except x = 1.
Not Equal To Symbol vs Equal Symbol
Understanding the difference is essential.
| Symbol | Meaning |
| = | Equal to |
| ≠ | Not equal to |
Examples
Equal:
4 + 4 = 8
Not Equal:
4 + 4 ≠ 9
The first statement is true.
The second statement is also true because 8 is not 9.
Not Equal Symbol vs Other Inequality Symbols
Students often confuse the not equal sign with other comparison operators.
| Symbol | Meaning |
| ≠ | Not equal to |
| < | Less than |
| > | Greater than |
| ≤ | Less than or equal to |
| ≥ | Greater than or equal to |
Examples
5 ≠ 7
5 < 7
7 > 5
Each symbol expresses a different mathematical relationship.
How to Type the Not Equal To Symbol
Typing the symbol varies depending on your device.
Windows Alt Code
Hold the Alt key and type:
Alt + 8800
or
Alt + 2260
Depending on software support.
You can also use:
Alt + X
after typing Unicode values in some applications.
Mac Keyboard Shortcut
On Mac:
Option + =
This inserts:
≠
Microsoft Word
Method 1:
Type:
2260
Then press:
Alt + X
Word converts it to:
≠
Method 2:
Insert → Symbol → Mathematical Symbols.
Google Docs
- Click Insert.
- Select Special Characters.
- Search for not equal
- Insert the symbol.
HTML Code
Web developers can use:
≠
or
≠
Output:
≠
Unicode
Unicode value:
U+2260
Character:
≠
Not Equal To Symbol in Programming
Programming languages often use alternatives instead of the actual symbol.
JavaScript
a != b
or
a !== b
Python
a != b
Java
a != b
C++
a != b
PHP
$a != $b
SQL
SELECT *
FROM users
WHERE age <> 18;
or
WHERE age != 18;
Why Programming Uses != Instead of ≠
Programming languages were originally designed for keyboards containing limited characters.
The sequence:
!=
became the standard representation of:
≠
Today most programming languages still follow this convention.
Not Equal Symbol in Excel
Excel supports inequality comparisons.
Example formula:
=A1<>B1
This checks whether the values in cells A1 and B1 differ.
If they are different Excel returns TRUE.
Not Equal Symbol in Google Sheets
Google Sheets uses:
<>
Example:
=A1<>B1
Meaning:
A1 is not equal to B1.
Practical Examples of the Not Equal Symbol
Example 1
2 ≠ 5
True because 2 and 5 are different.
Example 2
10 ≠ 10
False because both numbers are equal.
Example 3
x ≠ 0
The variable cannot be zero.
Example 4
25 ≠ 30
True statement.
Real-World Uses of the Not Equal Sign
The not equal symbol appears in many fields.
Education
Students learn inequalities and algebra using the symbol.
Engineering
Engineers compare measurements and specifications.
Example:
Actual Value ≠ Expected Value
Economics
Economic models compare variables.
Example:
Supply ≠ Demand
Physics
Scientists use inequality relationships in formulas and experiments.
Data Science
Data analysts compare datasets and identify mismatches.
Computer Science
Programmers use inequality operators in algorithms and software logic.
Common Mistakes When Using the Not Equal Symbol
Confusing It With Minus
Incorrect:
=-
Correct:
≠
Using Slash Incorrectly
Incorrect:
/=
Correct:
≠
Mixing With Greater Than or Less Than
Incorrect assumption:
≠
means greater than.
It does not.
The symbol only indicates inequality.
Not Equal Symbol in Logic
Mathematical logic frequently uses the symbol.
Example:
P ≠ Q
This means proposition P differs from proposition Q.
Logical proofs often rely on demonstrating non-equality between objects or statements.
Related Mathematical Symbols
Several symbols are closely related.
| Symbol | Meaning |
| = | Equal to |
| ≠ | Not equal to |
| ≈ | Approximately equal |
| ≡ | Identically equal |
| ∝ | Proportional to |
| ∈ | Element of |
| ∉ | Not an element of |
| ± | Plus or minus |
| ∞ | Infinity |
Understanding these symbols improves mathematical literacy and problem-solving skills.
Copy and Paste Not Equal Symbol
You can copy the symbol below directly:
Not Equal Symbol
≠
Unicode
U+2260
HTML
≠
Decimal Code
≠
Frequently Asked Questions
What does the not equal symbol mean?
The not equal symbol (≠) means two values quantities or expressions are different and do not have the same value.
What is the keyboard shortcut for ≠?
Windows
Alt + 8800
Mac
Option + =
What is the Unicode for the not equal symbol?
Unicode:
U+2260
Is ≠ the same as !=?
In mathematics:
≠
In programming:
!=
Both represent not equal to
Can I use ≠ in Excel?
Excel typically uses:
<>
instead of the mathematical symbol.
What is the HTML code for the not equal sign?
≠
or
≠
Conclusion
The not equal to symbol (≠) is a fundamental mathematical symbol used to express inequality between numbers variables expressions and logical statements. From elementary arithmetic to advanced calculus programming statistics engineering and data science the symbol plays a critical role in communicating that two values are different.
Knowing how to type copy paste and use the not equal symbol correctly can improve accuracy in mathematics coding academic writing spreadsheets and professional documentation. Whether you’re a student teacher programmer engineer or researcher mastering the ≠ symbol is an essential part of understanding mathematical and logical relationships.
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