# Lot Sizes Explained - Standard, Mini, Micro > Lot sizes determine the scale of your forex positions. Here is a clear explanation of standard, mini, and micro lots and how to choose the right size for your account. **Tags:** lot-size, standard-lot, mini-lot, micro-lot, forex-basics **URL:** https://traderjournal.app/forex-basics/lot-sizes-explained-standard-mini-micro --- # Lot Sizes Explained - Standard, Mini, Micro A lot is the standard unit of position size in forex. All lot sizes refer to the number of currency units being traded. Understanding what each lot size means in practical terms is essential for calculating risk correctly. --- ## Standard Lot A standard lot = 100,000 units of the base currency. On EUR/USD, 1 standard lot means you are trading 100,000 Euros. With $10 per pip (EUR/USD), a 50-pip move in your favor = $500 profit. A 50-pip move against you = $500 loss. Standard lots are typically used by institutional traders, well-funded retail traders, and experienced traders with significant account sizes. For most retail beginners, standard lots represent too much capital per pip. --- ## Mini Lot A mini lot = 10,000 units of the base currency = 0.10 standard lots. On EUR/USD, 1 mini lot (0.10 lots) = $1 per pip. A 50-pip move in your favor = $50 profit. Mini lots are the most common size for retail traders with accounts of $1,000-$20,000. They allow meaningful position sizing without requiring large amounts of capital per trade. --- ## Micro Lot A micro lot = 1,000 units of the base currency = 0.01 standard lots. On EUR/USD, 1 micro lot (0.01 lots) = $0.10 per pip. A 50-pip move in your favor = $5 profit. Micro lots are used by: - Beginners with small accounts ($100-$2,000) - Traders testing new strategies who want real money exposure with minimal risk - Anyone practicing a strategy at reduced scale before moving to larger positions --- ## How Lot Sizes Appear in MT4/MT5 In MetaTrader, position sizes are expressed as: - 1.00 = 1 standard lot - 0.10 = 1 mini lot (10% of a standard lot) - 0.01 = 1 micro lot (1% of a standard lot) You can trade fractional lots between these levels. 0.37 lots, 0.15 lots, 0.05 lots are all valid lot sizes with brokers that allow fractional trading. The minimum lot size varies by broker - typically 0.01 lots for retail accounts, but some brokers require 0.10 lots minimum. --- ## Choosing the Right Lot Size Lot size is not chosen by feel or preference - it should be calculated from your risk management rules. The correct lot size for any trade: Lot size = Account risk / (Stop loss in pips x Pip value per lot) For a $10,000 account at 1% risk ($100) with a 30-pip stop on EUR/USD: $100 / (30 x $10) = 0.33 lots If your broker only allows 0.01 increments, trade 0.33 lots (round to 0.33 if they allow it, or 0.30 or 0.35 if they require rounding to 0.05 increments). Never choose a lot size because it "feels right" or because you usually trade that size. Calculate it every time. --- Track your lot sizes and verify your risk management consistency in Trader Journal. Download at android.traderjournal.app or ios.traderjournal.app.