Risk warning: trading gold carries a high risk of loss. Gold Position Manager is software: it works only while MetaTrader 5 runs on your PC or VPS, and it can stop. Always be ready to manage your trades yourself. Risk disclosure
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Free tool

Gold lot size calculator for XAUUSD

Choose how much you are willing to lose if your stop loss is hit. The calculator gives you the lot size, the value per pip and your real loss after rounding to your broker's lot step.

Your trade

Risk per trade

Or enter the prices, and the distance is worked out for you:

Broker settings

Find both in MT5: right-click XAUUSD in Market Watch, then Specification.

Result

Money at risk
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Stop distance
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Exact lot
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Lot size to use
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Value per pip
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Loss at stop loss
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Fill in your trade on the left.

Do this automatically on every trade

Gold Position Manager does this calculation inside MT5: set your risk in % or money, and the BUY and SELL buttons on the panel use the lot that fits your stop loss, with your broker's real contract values. See all features.

How the calculator works

Professional traders start with the money they are willing to lose and let the lot size follow. The formula is short:

Lot size = risk in USD ÷ (stop loss in pips × value of 1 pip for 1 lot)

On gold, 1 pip is 0.10 in price. At most brokers 1 lot is 100 ounces, so 1 pip is worth 100 × 0.10 = 10 USD per lot. The result is rounded down to your broker's lot step, so your real risk is never higher than the risk you chose.

Three worked examples

BalanceRiskStop lossLot sizeLoss at stop
10,000 USD1% = 100 USD100 pips0.10100.00 USD
2,000 USD1% = 20 USD50 pips0.0420.00 USD
5,000 USD0.5% = 25 USD120 pips0.02 (exact 0.0208)24.00 USD

In the last example, the exact result 0.0208 is rounded down to 0.02, so the real loss at the stop is 24.00 USD instead of 25.00 USD.

What the calculator cannot know

  • Spread, slippage and commission come on top. In fast markets the stop can be filled at a worse price.
  • Other currencies: the calculator assumes a USD account. For another account currency, convert your risk to USD first.
  • Several open trades add up. Two trades of 1% each are 2% at risk.

More detail on pips, points and contract sizes: XAUUSD pip value and lot size. How to choose the stop itself: how to set stop loss and take profit in gold trading.

Questions

How do I calculate lot size for XAUUSD?

Divide the money you are willing to risk by the stop loss in pips times the value of 1 pip for 1 lot. With the common contract of 100 ounces, 1 pip is worth 10 USD per lot. Example: 100 USD risk and a 100-pip stop give 100 ÷ (100 × 10) = 0.10 lot.

How much is 1 pip on gold worth?

With 1 pip = 0.10 in price and a contract of 100 ounces, 1 pip is worth 10 USD for 1.00 lot, 1 USD for 0.10 lot and 0.10 USD for 0.01 lot. Check your broker's contract size, because some accounts use other sizes.

Why is the lot rounded down?

Brokers only accept lots in fixed steps, often 0.01. Rounding down keeps your real risk at or below the risk you chose; rounding up would quietly increase it.

Risk note

This calculator is a tool for education, not financial advice. Trading gold carries a high risk of loss, and the real loss can be larger than calculated because of spread, slippage and gaps.