Home | Math | Difference between Variables and Constants

# Difference between Variables and Constants

May 8, 2023 written by Azhar Ejaz

The key difference between variables and constants is that a variable is a value that can change, while a constant is a value that does not change.

## 7 Difference between variable and constant

1. A variable is a value that can change, while a constant is a value that does not change.
2. The value of a variable is not fixed and can be altered, whereas the value of a constant is fixed and cannot be altered.
3. Variables are represented by symbols such as x, y, or z, while constants are represented by symbols such as π, e, or c.
4. A variable is typically used in mathematical equations to represent unknown values, whereas a constant is typically used in mathematical equations to represent fixed values.
5. The value of a variable is dependent on other factors or variables, while the value of a constant is independent and does not depend on any other factors or variables.
6. Variables can have different values in different contexts or situations, while constants always have the same value, regardless of the context or situation.
7. The value of a variable can be assigned or reassigned during the execution of a program or script, whereas the value of a constant is defined once and remains constant throughout the execution of a program or script.
File Under: