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Absolute Value Calculator.

Calculate the distance of a number from zero.

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Absolute value: 12

Absolute value

12.000000

Results update automatically as you type.

Use Cases

Check distances in math problems

When solving equations or inequalities involving absolute values, quickly verify the distance of a number from zero to avoid sign errors.

Example: For |x - 3| = 7, you might check |10| = 10 and |-4| = 4.

Understand negative numbers in real life

Use it to see how far below zero a temperature or debt is, ignoring the negative sign to focus on magnitude.

Example: If the temperature is -15°C, the absolute value is 15°C.

Frequently Asked Questions

What does the absolute value of a number mean?
The absolute value of a number is its distance from zero on the number line, regardless of direction. For example, the absolute value of -5 is 5, and the absolute value of 5 is also 5.
How do I use this calculator?
Simply enter any real number (positive, negative, or zero) in the 'Number' field. The calculator will instantly show its absolute value, which is always non-negative.
Can I enter fractions or decimals?
Yes, you can enter any real number, including decimals and fractions (as decimal approximations). The calculator will return the absolute value of that number.

Tips & Common Mistakes

Tips

  • Remember: the absolute value of a number is always non-negative, even if the input is negative.
  • For zero, the absolute value is zero, as it is exactly at zero distance from zero.
  • Use this calculator to double-check your manual calculations when working with absolute values in algebra.
  • If you need the absolute value of an expression, first simplify the expression, then apply the absolute value.

Common Mistakes to Avoid

  • Thinking that absolute value changes the sign of a number; it only removes a negative sign, leaving positive numbers unchanged.
  • Forgetting that the absolute value of zero is zero, not a positive number.
  • Confusing absolute value with squaring; squaring always gives a non-negative result, but absolute value is the distance from zero, not the square.

Last updated: August 13, 2026