A converter is a piece of equipment that changes one form of something into another, so you can use it more easily.

A converter is a piece of equipment that changes one form of something into anotherconverter 是一種能把某樣東西從一種形式變成另一種形式的設備， so you can use it more easily讓你可以更方便使用。

A power converter changes electricity from one kind to another — for example so a US hairdryer can run in Taiwan, or so a laptop can take wall power. A catalytic converter on a car changes dirty exhaust into cleaner gas. Other converters change a signal from analogue to digital. The idea is always: in one form, out another.

A power converter changes electricity from one kind to anotherpower converter 會把電力從一種形式變成另一種， for example so a US hairdryer can run in Taiwan, or so a laptop can take wall power比如讓美規吹風機能在台灣用，或讓筆電可以接家用電源。 A catalytic converter on a car changes dirty exhaust into cleaner gas車上的 catalytic converter 會把髒的廢氣變成比較乾淨的氣體。 Other converters change a signal from analogue to digital其他 converter 會把訊號從類比轉成數位。 The idea is always: in one form, out another概念一直都是：進去一種形式，出來另一種。

It is a practical, technical word.

It is a practical, technical word這是一個很實用、技術性的字。

In shops you will also hear adaptor, which is close but not always the same: an adaptor may only change the plug shape; a converter may change the voltage or the thing itself. People also write convertor with an o; converter with an e is the common spelling.

In shops you will also hear adaptor在店裡你也會聽到 adaptor 這個字， which is close but not always the same意思很接近，但不完全一樣： an adaptor may only change the plug shapeadaptor 可能只改插頭的形狀， a converter may change the voltage or the thing itselfconverter 則可能改變電壓，或東西本身。 People also write convertor with an o也有人會拼成 convertor（用 o）， converter with an e is the common spelling用 e 的 converter 才是常見的拼法。