Absolute Value Calculator

Find the absolute value of a number, or solve the equation |x − a| = b.

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How to use this calculator

Enter your values after choosing the type of calculation in the tabs. The result updates as you type; press Calculate to confirm and jump to the result on mobile. Use Share to send the calculator with your result.

What is absolute value?

The absolute value |x| is a number’s distance from 0, so it’s never negative: |−7.5| = 7.5 and |7.5| = 7.5. The equation |x − a| = b asks for points a distance b from a, giving x = a − b or x = a + b (one solution if b = 0, none if b < 0).

Frequently asked questions

Can absolute value be negative?

No.

About this tool

Written by
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Formula tests passed · human review pending
Last updated
31 Oct 2026

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