Traders who are new often face the same problem – they don’t know what size order to open. Some press the micro lot below $0.01 because they fear losses; others go full 1.0 because they are eager to get rich quickly. This article will explain what Lot really is and what formulas industry experts use to choose Lot sizes.
Why the Forex Market Needs Lots: The Same Old Trading Problem
Before discussing what a Lot is, we need to understand what problem led the industry to create this system.
In the foreign exchange market (Forex), prices change in very small amounts. The popular way to describe price movements is “Pip” (Percentage in Point). For example, EUR/USD moving from 1.0850 to 1.0851 is just 1 Pip.
Imagine buying only 1 Euro. Even if the price moves 100 Pips, you only make $0.01. Such trading “cannot be practically done.”
Because of this, the market and broker companies (brokers) created a system of “standard unit sizes” to aggregate small trades into sizes that can generate meaningful profit or loss. This system is called Lot.
Think of it like buying eggs: you don’t buy eggs one by one at the market, but in cartons (Lot).
Definition of a Lot: The Common Trading Unit
Lot is the term for the contract size (Contract Size) you are buying or selling. It indicates how much of the asset you control.
In the Forex market, there is a widely accepted standard: 1 Standard Lot = 100,000 units of the base currency (Base Currency).
“Base currency” can be confusing, but it’s simple: it’s the first currency in the pair:
EUR/USD: 1 Lot = control of 100,000 Euros (EUR), not dollars
USD/JPY: 1 Lot = control of 100,000 US Dollars (USD)
GBP/USD: 1 Lot = control of 100,000 Pounds (GBP)
Knowing that 1 Lot equals 100,000 units of the first currency helps you accurately calculate risk.
Types of Lots: Choosing the Right Size
Since 1 Standard Lot is large (100,000 units), requiring substantial capital, the market divides Lots into smaller sizes so retail traders can access the market and better manage risk.
###Common Lot types:
Standard Lot (Full Lot)
Size: 1.0
Units: 100,000
Suitable for: Professionals, funds, large capital
Mini Lot (Mid Lot)
Size: 0.1
Units: 10,000
Suitable for: Intermediate traders, moderate capital
Micro Lot (Small Lot)
Size: 0.01
Units: 1,000
Suitable for: Beginners, strategy testing, limited capital
Nano Lot (Lowest Lot)
Size: 0.001
Units: 100
Suitable for: Basic training, demo accounts
Leading brokers, including Mitrade, use Micro Lots (0.01) as the minimum size, balancing risk reduction and psychological pressure for learning.
(Comparison table:
Type
Size
Units
Approx. Value/Pip )EUR/USD###
Suitable for
Standard
1.00
100,000
~(
Professionals, funds
Mini
0.10
10,000
~)
Intermediate
Micro
0.01
1,000
~$0.10
Beginners, testing
Nano
0.001
100
~$0.01
Beginners
How Lot Size Affects Profit and Loss
This is the core of the topic: the Lot size you choose determines the “value per Pip” of your trade.
Think of Lot size as the speed control of your trading: the more you press, the faster it goes—whether for profit or loss.
From the table above, many memorize these figures because they directly relate to USD-based pairs like EUR/USD, GBP/USD:
1.0 Standard Lot $10 100,000 units$1 → 1 Pip change ≈ (- $10)
Case Study: Different Results from the Same Trade Size
Suppose:
Trader X ###aggressive( and Trader Y )conservative( both start with $1,000. Both expect EUR/USD to rise and enter buy orders at the same price, with the same 50 Pip Take Profit / Stop Loss.
But they choose different Lot sizes:
Trader X: 1.0 Standard Lot )(per Pip$10
Trader Y: 0.01 Micro Lot )$0.10 per Pip(
If the price moves 50 Pips in the right direction:
Trader X: Loss = 50 × $10 = -$500 (-50% of account
Trader Y: Loss = 50 × $0.10 = -$5 )-0.5% of account
It seems Trader X is smarter: if correct, he gains 100 times more.
But here’s the reality: if Trader X loses, his account drops to -50%. If he suffers another similar loss, his account blows up.
Meanwhile, Trader Y, with only -0.5%, can withstand about 200 such losses before his account is wiped out.
Conclusion: Overtrading with too large a Lot size is the fastest way to blow your account, regardless of your strategy.
Therefore: Lot size is not a tool for profit, but a tool for “risk management.”
How Professional Traders Calculate Lot Sizes
Once you understand how dangerous it is to choose larger Lot sizes, the next question is: “What Lot size should I choose?”
Trading without calculating Lot size is like driving downhill without brakes. Professionals never guess; they calculate before opening each order.
( Three variables to know before calculating:
Account Equity )Account balance(: How much money is in your trading account )e.g., $5,000$10
Risk Percentage (Risk per trade): How much are you willing to lose per trade? Industry recommends 1-3% (e.g., 2%)
**Stop Loss $500 Pips$500 **: How many Pips away is your stop loss from entry?
$500 Standard formula( used worldwide:
Lot Size = )Account Equity × Risk Percentage$5 ÷ $995 Stop Loss in Pips × Pip Value(
This formula may look complex, but it’s just a way of thinking:
Beginners: “How much Lot should I trade?”
Professionals: “If I go wrong, where is my stop loss? How much am I willing to lose?”
)Example 1: Forex (EUR/USD)
Scenario:
Capital: $10,000
Risk: 2% ###= $200(
Stop Loss: 50 Pips
Pip value per 1.0 Lot: )
Calculation:
Lot Size = (÷ )50 × $10(
Lot Size = 0.4 Lots
Meaning: Open a 0.4 Lot order; if the price hits the stop loss, you lose exactly 2% of your account.
)Example 2: Gold (XAUUSD)
The challenge arises with other assets like gold because the way we count points differs:
In Forex, we count “Pip” at 4 decimal places.
In gold, the price is around 4,000.00, and we count “Point” at 2 decimal places.
When trading 1.0 Lot of gold, a $1 move equals 100 Points.
Scenario:
Capital: $5,000
Risk: 2% (= $100)
Entry at 4,050.00, stop at 4,045.00 = $5.00 difference = 500 Points
Per Point value of 1.0 Lot: ###
Calculation:
Lot Size = (÷ )500 × $1(
Lot Size = 0.2 Lots
Different Markets, Different Lot Sizes: How Much Do They Differ?
Many traders are confused, thinking that Lot sizes are the same across markets. Using 0.1 Lot in Forex is the same as 0.1 Lot in gold or oil, but they are not.
0.1 Lot in EUR/USD = 10,000 EUR
0.1 Lot in XAUUSD = 10 ounces of gold
0.1 Lot in WTI crude = 100 barrels of oil
The contract sizes and risk profiles are entirely different.
)Comparison table:
Market
Asset
1 Standard Lot
Represents
Forex
EUR/USD
100,000 EUR
100,000 units of EUR
Commodity
Gold (XAUUSD)
100 ounces
100 ounces of gold
Commodity
Oil ###WTI(
1,000 barrels
1,000 barrels of oil
Index
S&P 500
Varies by broker
Value × 1, 10, or 50 times
Stock
Thai stocks
100 shares
100 shares of stock
Final Key Takeaway
Lot size is not a random number you pick. It is a risk management tool. Choosing the right Lot size is more important than finding the perfect entry point because it determines how long you can stay in the market.
Change your question today:
Stop asking: “How much Lot to trade to get rich?”
Start asking: “If I go wrong in this trade, what Lot size allows me to still have a chance to continue trading?”
This is the difference between a trader and a master trader.
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Now you need to understand about Lot: How important is it for Forex trading?
Traders who are new often face the same problem – they don’t know what size order to open. Some press the micro lot below $0.01 because they fear losses; others go full 1.0 because they are eager to get rich quickly. This article will explain what Lot really is and what formulas industry experts use to choose Lot sizes.
Why the Forex Market Needs Lots: The Same Old Trading Problem
Before discussing what a Lot is, we need to understand what problem led the industry to create this system.
In the foreign exchange market (Forex), prices change in very small amounts. The popular way to describe price movements is “Pip” (Percentage in Point). For example, EUR/USD moving from 1.0850 to 1.0851 is just 1 Pip.
Imagine buying only 1 Euro. Even if the price moves 100 Pips, you only make $0.01. Such trading “cannot be practically done.”
Because of this, the market and broker companies (brokers) created a system of “standard unit sizes” to aggregate small trades into sizes that can generate meaningful profit or loss. This system is called Lot.
Think of it like buying eggs: you don’t buy eggs one by one at the market, but in cartons (Lot).
Definition of a Lot: The Common Trading Unit
Lot is the term for the contract size (Contract Size) you are buying or selling. It indicates how much of the asset you control.
In the Forex market, there is a widely accepted standard: 1 Standard Lot = 100,000 units of the base currency (Base Currency).
“Base currency” can be confusing, but it’s simple: it’s the first currency in the pair:
Knowing that 1 Lot equals 100,000 units of the first currency helps you accurately calculate risk.
Types of Lots: Choosing the Right Size
Since 1 Standard Lot is large (100,000 units), requiring substantial capital, the market divides Lots into smaller sizes so retail traders can access the market and better manage risk.
###Common Lot types:
Standard Lot (Full Lot)
Mini Lot (Mid Lot)
Micro Lot (Small Lot)
Nano Lot (Lowest Lot)
Leading brokers, including Mitrade, use Micro Lots (0.01) as the minimum size, balancing risk reduction and psychological pressure for learning.
(Comparison table:
How Lot Size Affects Profit and Loss
This is the core of the topic: the Lot size you choose determines the “value per Pip” of your trade.
Think of Lot size as the speed control of your trading: the more you press, the faster it goes—whether for profit or loss.
From the table above, many memorize these figures because they directly relate to USD-based pairs like EUR/USD, GBP/USD:
Case Study: Different Results from the Same Trade Size
Suppose:
Trader X ###aggressive( and Trader Y )conservative( both start with $1,000. Both expect EUR/USD to rise and enter buy orders at the same price, with the same 50 Pip Take Profit / Stop Loss.
But they choose different Lot sizes:
If the price moves 50 Pips in the right direction:
If the price moves 50 Pips against:
It seems Trader X is smarter: if correct, he gains 100 times more.
But here’s the reality: if Trader X loses, his account drops to -50%. If he suffers another similar loss, his account blows up.
Meanwhile, Trader Y, with only -0.5%, can withstand about 200 such losses before his account is wiped out.
Conclusion: Overtrading with too large a Lot size is the fastest way to blow your account, regardless of your strategy.
Therefore: Lot size is not a tool for profit, but a tool for “risk management.”
How Professional Traders Calculate Lot Sizes
Once you understand how dangerous it is to choose larger Lot sizes, the next question is: “What Lot size should I choose?”
Trading without calculating Lot size is like driving downhill without brakes. Professionals never guess; they calculate before opening each order.
( Three variables to know before calculating:
$500 Standard formula( used worldwide:
Lot Size = )Account Equity × Risk Percentage$5 ÷ $995 Stop Loss in Pips × Pip Value(
This formula may look complex, but it’s just a way of thinking:
)Example 1: Forex (EUR/USD)
Scenario:
Calculation:
Meaning: Open a 0.4 Lot order; if the price hits the stop loss, you lose exactly 2% of your account.
)Example 2: Gold (XAUUSD)
The challenge arises with other assets like gold because the way we count points differs:
Scenario:
Calculation:
Different Markets, Different Lot Sizes: How Much Do They Differ?
Many traders are confused, thinking that Lot sizes are the same across markets. Using 0.1 Lot in Forex is the same as 0.1 Lot in gold or oil, but they are not.
The contract sizes and risk profiles are entirely different.
)Comparison table:
Final Key Takeaway
Lot size is not a random number you pick. It is a risk management tool. Choosing the right Lot size is more important than finding the perfect entry point because it determines how long you can stay in the market.
Change your question today:
This is the difference between a trader and a master trader.