What a pip is and how its value is computed
A pip is the usual smallest price increment of a currency pair: 0.0001 in most pairs and 0.01 in yen pairs. Its dollar value is not fixed — it depends on trade size and the quote currency. The basic formula is contract size multiplied by one pip, converted into your account currency when needed.
In one standard lot (100,000 units) of EUR/USD a pip is about ten dollars; in a mini lot (10,000 units) one dollar; in a micro lot (1,000 units) ten cents. That is why the same pip move can mean very different money.
