A civil-wrong concept defining liability rules for compensating harm or preventing wrongful interference with protected interests. It specifies required elements such as duty, prohibited conduct, causation, and legally cognizable harm or defines protection of commercial and intangible interests where applicable. It does not impose liability where the required element set is not satisfied or where recognized privileges or defenses apply. It allocates responsibility for injury or interference and shapes the scope and measure of monetary and equitable relief. The concept is generally stable, though doctrinal refinements and statutory updates may alter elements or defenses over time.

Principle

Vindicate the owner's right to exclusive control by treating wrongful exercise of dominion (sale, destruction, unlawful retention) as a legal conversion that justifies monetary compensation equivalent to the chattel's value or an order of return.

Demonstration

A person finds and sells a lost collectible watch without title; the original owner may sue for conversion and recover the market value of the watch or demand its return if available.

Misapplication

Calling conversion when the defendant's interference was temporary, minimal, or within the scope of a lawful possessory dispute; such cases may better fit trespass to chattels or bailment remedies.

Consequence

Remedies commonly include damages equal to the full value at the time of conversion, possibly exemplary damages, and sometimes specific recovery (replevin) when the chattel can be returned; it fully compensates the owner's loss of control.

Reversal

If the actor had a good-faith claim of right, lawful title, or valid consent, the same conduct will not be conversion; bona fide purchasers with statutory protections may also avoid liability in some jurisdictions.

Boundary

Primarily concerns tangible personal property but may extend to certain intangibles if the law treats them as property; excludes minor interferences and ordinary negligence unless the conduct amounts to an unjustified dominion.

Semantic Tension

Overlap with criminal theft and with trespass to chattels: conversion focuses on the extent of control and the owner's loss; distinguishing between serious dispossession (conversion) and lesser interferences (trespass) is often factual and jurisdiction-dependent.

Synthesis

Conversion is the civil remedy for wrongful acts that appropriate another's movable property by exercising control inconsistent with ownership, producing a full-value damage remedy or order for return to redress the effective dispossession.