Use this calculator to verify a hand calculation, normalize a value before another tool, or make the exact arithmetic convention explicit in a reproducible workflow.

First value

A finite numeric input.

Second value

A finite numeric input.

The formula below determines the tool output. Absolute difference: The calculated absolute difference.^[1]

Calculations use JavaScript number arithmetic. Binary floating-point representation can make some decimal results inexact, and values outside the supported numeric range can overflow or lose precision. Round only for presentation unless the selected rounding tool is itself the intended operation.

Use the inverse operation to check a result when one exists: addition pairs with subtraction, multiplication with division, and powers with roots. For rounding or normalization tools, retain the unmodified value when later calculations still require full precision.

• Absolute Value Calculator

  Calculate the nonnegative absolute value of a finite number.

• Negate Number

  Return the negation of a number.

• Sign of Number Calculator

  Return minus one, zero, or one for a finite number.