Lot Size Calculator Forex

Calculate the correct forex lot size based on your account size, risk percentage and stop loss distance. Supports all major currency pairs for 2025/26.

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Forex Lot Size Calculator

Position Size Results

Account Risk Amount-
Pip Value (per standard lot)-
Standard Lots-
Mini Lots (0.1)-
Micro Lots (0.01)-
Recommended Position Size-
MB
Mustafa BilgicForex & Trading Specialist — Updated April 2026
ForexPosition Sizing2025/26

Lot Size Reference Table

Lot TypeUnitsPip Value (USD pairs)Margin (50:1)
Standard (1.0)100,000$10 / pip$2,000
Mini (0.1)10,000$1 / pip$200
Micro (0.01)1,000$0.10 / pip$20
Nano (0.001)100$0.01 / pip$2

Values shown for USD-quoted pairs. Cross pairs and exotic pairs may differ. Always check your broker's contract specifications.

Risk Management Guidelines

Conservative
0.5-1%
Moderate
1-2%
Aggressive
2-5%
Max Recommended
2%
Professional
0.25-1%
Max Open Risk
6-10%

How to Use This Calculator

1

Enter your account balance

Input your total trading account balance in GBP. This is the amount you have available to trade with, not including any margin already in use.

2

Set your risk percentage

Choose how much of your account you are willing to risk on this single trade. The recommended maximum is 2% for retail traders.

3

Enter stop loss in pips

Input the distance in pips from your entry price to your stop loss level. Wider stops require smaller position sizes to maintain the same monetary risk.

4

Select currency pair

Choose the pair you are trading. Different pairs have different pip values which affect the lot size calculation.

5

Review your position size

The calculator shows the optimal lot size in standard, mini, and micro lots to match your exact risk parameters.

Frequently Asked Questions

What is a forex lot size?
A standard forex lot is 100,000 units of the base currency. A mini lot is 10,000 units (0.1 lots), a micro lot is 1,000 units (0.01 lots), and a nano lot is 100 units (0.001 lots). The lot size determines how much each pip movement is worth and therefore your profit or loss per trade.
How much should I risk per trade?
Most professional traders risk between 0.5% and 2% of their account balance per trade. The 2% rule is widely recommended for retail traders. Risking more than 5% per trade significantly increases the probability of account blow-up, even with a positive edge.
What is a pip in forex?
A pip (percentage in point) is the smallest standard price movement in a currency pair. For most pairs, one pip is 0.0001 (the fourth decimal place). For JPY pairs, one pip is 0.01 (the second decimal place). Some brokers quote fractional pips (pipettes).
How do I calculate pip value?
For USD-quoted pairs (e.g., EUR/USD), one pip on a standard lot is worth $10. For other pairs, pip value = (0.0001 / exchange rate) x lot size. Your broker typically displays pip values in your account currency automatically.
What leverage should I use?
UK FCA-regulated brokers offer maximum 30:1 leverage for major pairs and 20:1 for minors. While higher leverage allows larger positions, it also increases risk. Many successful traders use effective leverage of 5:1 to 10:1, well below the maximum available.
Is forex trading regulated in the UK?
Yes. Forex brokers operating in the UK must be authorised by the Financial Conduct Authority (FCA). UK retail traders have negative balance protection (you cannot lose more than your deposit) and compensation through the FSCS up to £85,000 if a broker fails.

Official Sources & References

Data verified against official UK government sources. Last checked April 2026.