A pip (“percentage in point”) is the smallest standard price increment for a currency pair. It's the unit traders use to measure stops, targets, spreads, and daily ranges — almost every conversation about a forex trade is denominated in pips.
0.0001. So if EUR/USD moves from 1.10000 to 1.10010, that's a 1 pip move.0.01. So if USD/JPY moves from 150.00 to 150.10, that's a 10 pip move.The reason JPY pairs are different is historical: 1 USD has always been worth roughly 100–300 JPY, so a fourth-decimal increment would be too small to be useful.
Many brokers now quote prices to one extra decimal — a fractional pip, or pipette. EUR/USD might be quoted at 1.100053 instead of 1.10005. The pipette is one tenth of a pip and lets brokers tighten effective spreads. Stops, targets and pip values are still computed in whole pips.
The pip value depends on three things: the pair, the lot size, and your account currency.
For 1 standard lot (100,000 base units), one pip in the quote currency is fixed:
0.0001 × 100,000 = 10 quote-currency units per pip.0.01 × 100,000 = 1,000 JPY per pip.To convert that into your account currency, multiply by the current quote-to-account exchange rate. For example, 1 pip on EUR/USD with a USD account is exactly $10 per standard lot — no conversion needed because USD is already the quote currency.
Trader holds 0.5 standard lots of GBP/JPY, account is in EUR.
0.011,000500500 / 165 ≈ 3.03 EUR per pip.So a 50 pip move in GBP/JPY is worth roughly 50 × 3.03 = 152 EUR in P&L for this trader.
Two-thirds of new retail traders blow up not because they pick the wrong direction but because they size positions without understanding what one pip costs. If your stop is 30 pips and you don't know what 30 pips is worth in your currency, you can't plan risk.