Plus Minus Symbol

Symbol Format Data
± Code Point
All symbols


In math, the plus-minus symbol (±) has several uses, depending on the context:

  1. Indicating both positive and negative solutions: When the plus-minus symbol is used in equations or expressions, it represents both the positive and negative solutions for a given value. For example:

    In this case, the plus-minus symbol indicates that there are two possible values for , one positive and one negative: or .

  2. Representing the range of error or uncertainty: In measurements, scientific notation, or statistical data, the plus-minus symbol is used to indicate the range of error or uncertainty associated with a value. This is often seen in the context of confidence intervals or error margins. For example:

    This expression means that the true value of lies in the range from to .



The plus symbol is used in math to represent the addition of two expressions.


The minus symbol is an arithmetic operator used to represent subtraction.