Forex Lot Size Calculator
Enter your account balance, risk percent, stop loss in pips, and pip value to instantly find the right lot size for any forex trade.
Trade Parameters
$
0.1%
Conservative ≤2%
10%
$
Recommended Lot Size
Standard Lot
--
100,000 units
$10/pip
Mini Lot
--
10,000 units
$1/pip
Micro Lot
--
1,000 units
$0.10/pip
Risk Breakdown
Account Balance
--
Max Risk Amount
--
Stop Loss
--
Pip Value (standard lot)
--
Dollar Risk if Stopped Out
--
Risk Level
--
Conservative
Aggressive
Copied!
Summary
Enter your account balance, risk percent, stop loss in pips, and pip value to instantly find the right lot size for any forex trade.
How it works
- The calculator applies the standard position sizing formula: Lot Size = (Account Balance x Risk%) / (Stop Loss Pips x Pip Value per Lot). The pip value defaults to $10 per pip for a standard lot on USD-quoted pairs. Results are shown in standard, mini (0.1), and micro (0.01) lots.
Use cases
- Calculate how many lots to trade when risking 1% of a $10,000 account.
- Verify position size before entering a trade to avoid margin calls.
- Compare lot sizes across different stop loss distances.
- Scale position sizing as your account balance grows.
- Teach risk management principles to new forex traders.
Frequently Asked Questions
Last updated: 2026-06-18 ·
Reviewed by Nham Vu