Free trading tools
Forex Lot Size Calculator
Work out forex lot size from account risk, stop loss and pip value.
Best for
Forex position sizing with pip-based stops.
What you get
Lot size, pip risk and money at risk.
Not for
Checking broker-specific margin rules.
Formula
Lot size equals risk amount divided by stop distance and pip value.
Example
If you risk $100 with a 50 pip stop and $10 pip value, the size is 0.20 lots.
Hexaplan verdict
Use it before placing forex trades.
How forex lot size works
Forex size depends on account risk, stop distance and pip value. A wider stop needs a smaller lot size if risk stays the same.
This keeps risk consistent across pairs and setups.
How to use this calculator
- Enter account balance.
- Choose risk per trade.
- Enter stop loss in pips.
- Add pip value if needed.
- Use the lot size before ordering.
Common mistakes
- Using the same lot size on every pair.
- Ignoring pip value differences.
- Forgetting spread.
- Increasing lot size after losses.
- Not checking broker limits.
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FAQ
Is lot size the same for every pair?
No. Pip value and account currency can change the size.
Do I need entry price?
For basic forex lot sizing, stop distance and pip value are the key inputs.
Should I include spread?
Yes. Spread can affect the real stop distance.