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Absolute Value Calculator
Enter any number to find its absolute value – its distance from zero on the number line, always expressed as a non-negative result.
What is absolute value?
The absolute value of a number is its distance from zero on the number line, regardless of direction. It is always zero or positive, and is written using vertical bars, like |x|.
How this calculator works
Enter any real number, positive, negative, or zero. The calculator applies the standard rule: if the number is positive or zero, its absolute value is itself; if it is negative, its absolute value is the number multiplied by -1. For example, |5| = 5 and |-5| = 5.
- Sign tells you whether your original number was positive, negative, or zero.
- Opposite Value shows the number with its sign flipped, useful for comparison.
This tool is for general math learning and reference purposes.
Last reviewed August 2026