Trading Basics
Forex Trading Basics: Pairs, Pips and Position Sizing Explained
Currency pairs, quote conventions, pip values and lot sizing — the vocabulary and arithmetic that underpin every foreign exchange decision.
Reading a currency pair correctly
Every forex quote contains two currencies. The first is the base, the second is the quote. EUR/USD at 1.0850 means one euro buys 1.0850 US dollars. Buying the pair is a bet the base strengthens relative to the quote; selling is the opposite. This sounds trivial until a trader tries to reason about USD/JPY and CHF/JPY simultaneously and loses track of which exposure they actually hold.
Pairs are grouped into majors, minors and exotics. Majors involve the US dollar and carry the deepest liquidity and tightest spreads. Exotics involve smaller economies, and their spreads can be ten to fifty times wider — a structural cost, not a temporary condition.
Pips, points and what a move is worth
A pip is conventionally the fourth decimal place for most pairs and the second decimal for yen pairs. The monetary value of a pip depends on position size and the quote currency. On a standard lot of 100,000 units of EUR/USD, one pip is roughly ten dollars. On a micro lot of 1,000 units, it is roughly ten cents.
That ratio explains why two traders can watch the same chart and experience completely different levels of stress. The chart is identical; the exposure is not.
- Standard lot — 100,000 units.
- Mini lot — 10,000 units.
- Micro lot — 1,000 units.
- Nano lot — 100 units, offered by a minority of platforms.
Leverage is a multiplier on both sides
Leverage lets a trader control a larger notional position than their deposit. It multiplies gains and losses identically. At 1:30, a 3.3% adverse move wipes out the margin backing the position. European regulators cap retail leverage precisely because the arithmetic is unforgiving.
A useful mental reframe: leverage does not create profit, it creates exposure. Profit comes from a positive expectancy applied consistently. Our article on risk management develops this idea with concrete numbers.
Position sizing before entry, always
The professional sequence is risk first, entry second. Decide the maximum currency amount you are willing to lose on the trade, measure the distance from entry to the invalidation level, and divide. The result is your position size. Reversing the sequence — choosing a size and then hoping the stop survives — is the most common structural error in retail trading.
Platforms differ in how much they help with this. Some include integrated calculators; others expect the trader to compute externally. Our NordicFX review notes where the interface supports or hinders disciplined sizing.