A pip is the standard unit of price movement in forex. It is the smallest conventional increment a quote moves, and it is the unit every risk calculation in trading is ultimately expressed in.
For most pairs the pip is the fourth decimal place: 1.0850 to 1.0851 is one pip. For pairs quoted against the Japanese yen the pip is the second decimal: 148.20 to 148.21 is one pip. Many brokers show one extra digit, called a pipette or fractional pip, which is a tenth of a pip and is only cosmetic.
Gold, indices and crypto do not use pips consistently — brokers define a point or tick for each instrument. Always check the instrument specification rather than assuming, because a wrong assumption here multiplies straight into position size.
For a pair where the US dollar is the quote currency, one standard lot (100,000 units) gives a pip value of ten dollars, a mini lot (10,000) gives one dollar, and a micro lot (1,000) gives ten cents. So a thirty-pip stop on one mini lot risks thirty dollars.
When the dollar is not the quote currency the pip value must be converted at the current rate, which is why a pip value calculator is worth using rather than doing it in your head mid-trade. The number you actually care about is money at risk: stop distance in pips multiplied by pip value multiplied by lots.
Work backwards. Decide the percentage of the account you are willing to lose, convert that to money, then divide by the stop distance in pips and by the pip value per lot. The result is your lot size. This is the entire calculation behind every position size tool, including the free one in Safabot's calculators.
Because sizing is derived from the stop, a wider stop does not mean more risk — it means a smaller position. Traders who keep the lot size fixed and let the stop move are the ones whose losses vary wildly from trade to trade.
On a standard lot of a dollar-quoted pair, about ten dollars; a mini lot about one dollar; a micro lot about ten cents. For other quote currencies the value converts at the current exchange rate.
A pipette is a tenth of a pip — the extra fifth decimal digit many brokers display. It affects spread precision, not your risk arithmetic.
There is no universal number. The stop belongs where the trade idea is invalidated on the chart; the position size then adapts to that distance.