The conditional tense is used to say what might happen under certain conditions.
It is called the conditional tense because it is dependent on a certain condition, eg you can only fulfil one thing on the condition that another thing happens.
The conditional tense is formed with the stem würde-, which comes from the verb werden. This is then used together with the main verb in the infinitive, which is placed at the end of the sentence or main clause.
The good news is that it looks a lot like the future tense.
|Future||A fact that will definitely happen||ich werde ein Auto kaufen||I will buy a car|
|Conditional||A fact that might happen||ich würde ein Auto kaufen||I would buy a car|
Like all German verbs, the ending of würde- changes depending on the subject of the verb. Here are the forms needed for the conditional tense: