What is this calculator?
The lot size calculator simplifies position sizing by returning a lot estimate from balance, risk and stop-loss pips.
Lot Size Calculator
Estimate recommended lot size from balance, risk percentage and stop-loss distance.
Calculator
Plan the numbers before entry
Forex instrument
DEMOMajor FX pair, USD-quoted pip value.
Using reference quote until live data is available.
Contract
100K
Pip
0.0001
Min Lot
0.01
Live reference: 1.16720
Results
Lot Size
0.25
Recommended risk estimate
Risk Amount
$100.00
1% of balance
Estimated Margin
$58.36
Uses reference price and 1:500
Notional Exposure
$29,180
EURUSD reference price 1.1672; USD to USD
Lot size is based on risk amount, stop-loss distance and movement value. Market price is only used when a currency conversion is required.
Estimates use standard contract assumptions. Broker specs, spreads, commissions, swaps and account-currency conversion may vary.
Other Calculators
All ToolsHow traders use it
It is useful when you already know how much of your account you want to risk and need a lot-size estimate quickly.
Common mistakes
- - Using lot size before defining risk
- - Not updating balance after drawdown
- - Ignoring wider stops on volatile pairs
Best practices
- - Keep risk percentage consistent
- - Use conservative rounding
- - Check the margin requirement before execution
Important disclaimer
Calculator results are educational estimates only. Broker contract sizes, spreads, commissions, swap, slippage, margin rules and account currency conversion can materially change real trade outcomes.
FAQ
Lot Size FAQ
Answers for traders using this calculator before entering the market.
Is lot size the same as position size?
Lot size is a common way to express position size in Forex and CFD trading.
What risk percentage should I use?
That depends on your plan and tolerance. Many traders keep per-trade risk small to protect capital.
Does stop loss affect lot size?
Yes. A wider stop usually requires a smaller lot size for the same account risk.
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