Position sizing
Forex Lot Size Calculator
Work out the position size that matches your account balance, planned risk, entry price, and stop loss. This is useful for EURUSD, GBPUSD, USDJPY, gold, and silver trades.
Trading involves risk. Calculator results are estimates based on the values you enter; spreads, commissions, swaps, slippage, contract specs, and broker execution can change the real outcome.
Forex Lot Size Calculator
Suggested position size
0.100 lots
Use the result as a planning number, then check broker minimum lot size, spread, and slippage.
Compare brokersWhat the calculator answers
The calculator answers one practical question: if this trade hits the stop loss, what lot size keeps the loss close to the amount you planned?
It does not decide whether the trade is good. It only connects the chart to the account. A wide stop usually means a smaller position. A tight stop can allow a larger position, but only if the stop is placed for a real market reason.
Example
| Input | Example | Why it matters |
|---|---|---|
| Account balance | $10,000 | The size of the account you are protecting |
| Risk per trade | 1% | $100 planned loss if the stop is hit |
| XAUUSD entry / stop | 2350 / 2340 | A 100-pip gold stop using the calculator assumptions |
| Suggested size | 0.10 lots | Keeps the planned risk close to $100 before costs |
Checks before using the result
Confirm your broker contract size, minimum lot increment, average spread, commission, and stop distance rules. Gold and silver symbols are especially important because contract specifications can differ by broker.
If the calculated lot size is smaller than your broker allows, the trade may be too large for the account at that stop distance. Do not solve that by removing the stop or increasing risk.
Related tools
Use the number before you compare strategies
A calculator cannot tell you whether a strategy is good. It helps you understand the size of the risk before you look at verified results, drawdown, broker conditions, and account fit.