Gold Lot Size Calculator (XAU/USD)
This gold lot size calculator works out how many lots of XAU/USD you can trade so that, if your stop-loss is hit, you lose the amount you chose. Enter your balance, risk per trade and the stop distance in dollars per ounce or in pips (both the $0.10 and the $0.01 convention are covered, because brokers differ). It returns lots and ounces, what a $1 move, a $0.10 pip and a $0.01 point are worth at that size, and the margin the trade ties up, in USD, EUR, GBP, JPY, CHF, AUD, CAD or NZD.
Lots are rounded down to 0.01 so the loss at the stop stays within your limit. The stop is not a cap on losses: gold can gap at the weekly open and slip on data releases.
Prices are prefilled from delayed market quotes and cross rates are derived from them; edit the price to use your broker’s. Conversions use delayed exchange rates. Results are estimates; your broker’s contract specification is what counts.
How to use the gold lot size calculator in 4 steps
- Choose your account currency and enter your balance. Pick the currency your trading account is held in and enter the balance, or your equity if positions are already open. Gold is priced in US dollars, so non-dollar accounts are converted.
- Enter your risk per trade. Type the percentage of the account you are prepared to lose if the stop is hit. 1 means 1%.
- Enter the stop distance and how it is measured. Measure from entry to stop. The simplest is dollars per ounce: entry 4,012.50 and stop 3,997.50 is a $15.00 stop. If you think in pips, choose $0.10 pips (150) or $0.01 points (1,500); all three are the same stop.
- Check the price and contract size, then read the result. The gold price is prefilled from delayed quotes; type your broker’s price for an exact margin figure. Copy the ounces per lot from your broker’s contract specification (100 is common). The result shows lots, ounces, pip values and margin.
The gold lot size formula
Gold CFDs pay the dollar move in the price multiplied by the ounces you hold. The calculator fixes the money you are prepared to lose first, then finds the number of ounces that loses exactly that if the stop fills at its level.
Cash at risk (USD) = Balance × Risk %, converted into US dollars
Ounces = Cash at risk ÷ Stop distance ($ per ounce)
Lots = Ounces ÷ Ounces per lot (rounded down to 0.01)
Margin = Ounces × Gold price ÷ LeverageBecause gold is quoted in dollars per ounce, the stop distance in dollars is all you need for the size. The gold price only matters for the margin and the position value. If your account is in euros, pounds or another currency, the cash at risk is converted into dollars first, at delayed exchange rates (or illustrative ones if the feed is unavailable).
Gold pips, points and dollars: one stop, three numbers
The most common reason a gold lot size calculation goes wrong is the word “pip”. Most platforms quote XAU/USD to two decimals, for example 4,012.35. Some brokers and most trading courses call a $0.10 move a pip; others, and MetaTrader’s own “points”, count the $0.01 step. A few call a whole dollar a pip. They all describe the same price, so the safest habit is to think in dollars per ounce and convert only when your platform asks for pips.
| Price move | In $0.10 pips | In $0.01 points | Per 1.00 lot (100 oz) |
|---|---|---|---|
| $0.10 | 1 | 10 | $10 |
| $1.00 | 10 | 100 | $100 |
| $5.00 | 50 | 500 | $500 |
| $15.00 | 150 | 1,500 | $1,500 |
| $30.00 | 300 | 3,000 | $3,000 |
Our other calculators count a gold pip as $0.01, the platform’s smallest step. This one lets you choose, and shows the stop in dollars under the field so you can check it against your chart.
Gold pip value by lot size
With the common 100 oz contract, the money per move scales directly with the lots:
| Lots | Ounces | $1.00 move | $0.10 pip | $0.01 point |
|---|---|---|---|---|
| 1.00 | 100 | $100 | $10 | $1 |
| 0.50 | 50 | $50 | $5 | $0.50 |
| 0.10 | 10 | $10 | $1 | $0.10 |
| 0.05 | 5 | $5 | $0.50 | $0.05 |
| 0.01 | 1 | $1 | $0.10 | $0.01 |
If your broker’s lot is 10 oz, divide every money figure by 10; if it is 1 oz, divide by 100. Check the contract size in MetaTrader by right-clicking XAUUSD in Market Watch and opening Specification, or in the symbol information panel in cTrader.
Worked examples
Prices and exchange rates below are illustrative.
Example A: $10,000 account, 1% risk, $15 stop
- Cash at risk: $10,000 × 1% = $100
- Ounces: $100 ÷ $15.00 = 6.67 oz
- Lots at 100 oz: 0.0667, rounded down to 0.06 lots (6 oz)
- Loss at the stop: 6 × $15 = $90. Rounding up to 0.07 lots would risk $105.
- Margin at 20:1 with gold at $4,000: 6 × $4,000 ÷ 20 = $1,200
Example B: euro account, €5,000, 1% risk, 80-pip stop ($0.10 pips)
- Cash at risk: €50, which is $54.00 at EUR/USD 1.08
- Stop: 80 pips × $0.10 = $8.00 per ounce (800 points on a $0.01 platform)
- Ounces: $54 ÷ $8 = 6.75 oz, so 0.06 lots
- Loss at the stop: 6 × $8 = $48, about €44.44
Example C: sterling account, £20,000, 0.5% risk, $25 stop
- Cash at risk: £100, which is $129 at GBP/USD 1.29
- Ounces: $129 ÷ $25 = 5.16 oz, so 0.05 lots
- Loss at the stop: 5 × $25 = $125, about £96.90
A wider stop does not mean more risk: it means a smaller position. Gold often moves $20 to $50 in a day, so a stop that fits the market can force a size well below what traders used to currency pairs expect. Where to put the stop is covered in where to put a stop-loss.
Margin and leverage on gold
Leverage does not change the position size; it decides how much of your account the trade ties up. EU and UK retail clients can use at most 20:1 on gold (5% margin), with a margin close-out when equity falls to 50% of the margin required (see ESMA leverage limits and margin calls and stop-outs). If the calculator warns that the margin is larger than your balance, the stop is too tight for the risk you chose, and the trade would be rejected or closed out quickly. The margin calculator covers other sizes and pairs.
What the calculation leaves out
Gaps and slippage. Gold trades almost 24 hours on weekdays but closes at the weekend, so Monday’s open can jump past a stop. US data (payrolls, CPI, Fed decisions) can move it several dollars in seconds, and a triggered stop fills at the next available price. See slippage explained and gap and weekend risk.
Spread. Gold spreads widen around the daily rollover and on news. Add the typical spread to your stop distance before you calculate.
Overnight financing. Holding a gold CFD past the daily cut-off is usually charged financing on the full position value, not the margin. See swap and overnight financing. To put money figures on your target and stop, use the profit and loss calculator; for the background on contract sizes, sessions and what moves the price, read how to trade gold CFDs.
Frequently asked questions
How do I calculate lot size for gold (XAU/USD)?
Divide the cash you are prepared to lose by the stop distance in dollars to get ounces, then divide by the ounces in one lot. With $10,000 at 1% risk ($100) and a $15.00 stop: $100 ÷ $15 = 6.67 oz. At 100 oz per lot that is 0.0667, rounded down to 0.06 lots, which loses $90 if the stop fills at its level. 0.07 lots would lose $105.
How many pips is $1 on gold?
It depends on the pip your platform uses. Most brokers quote XAU/USD to two decimals, so the smallest step is $0.01: a $1 move is 100 of those points. Many traders and brokers call $0.10 a pip, which makes a $1 move 10 pips. The money does not change: on a 100 oz lot, a $1 move is $100 either way. That is why the calculator lets you enter the stop in dollars.
What is 0.01 lot of gold worth per pip?
With a 100 oz contract, 0.01 lots is 1 ounce. A $1.00 move is worth $1, a $0.10 pip $0.10 and a $0.01 point $0.01. One full lot (100 oz) is $100 per $1, $10 per $0.10 pip and $1 per $0.01 point. If your broker’s gold lot is 10 oz or 1 oz, divide those figures by 10 or 100.
How much margin do I need for 1 lot of gold?
Multiply 100 oz by the price and divide by the leverage. At an illustrative $4,000 an ounce, one lot is a $400,000 position, so the margin at the EU and UK retail limit of 20:1 is $20,000. 0.10 lots needs $2,000 and 0.01 lots $200. In a euro account at EUR/USD 1.08, 0.10 lots needs about €1,851.85.
Why does my broker show a different gold lot size?
Contract sizes differ. 100 oz per lot is the most common on MetaTrader, but some providers use 1 oz, 10 oz or 50 oz lots, and cent or micro accounts scale everything down. Open the symbol specification (right-click XAUUSD in Market Watch, then Specification) and copy the contract size into the ounces-per-lot field.
Can I lose more than the amount at my stop on gold?
Yes. A stop becomes a market order when it triggers. Gold can gap at the Sunday/Monday open and move several dollars in seconds around US data such as payrolls, CPI and Fed decisions, so a stop can fill beyond its level. On 0.06 lots (6 oz), a $15 stop that fills $25 away costs $150 instead of $90. Spread and overnight financing come on top.
Risk warning
CFDs are complex instruments and come with a high risk of losing money rapidly due to leverage. Most retail investor accounts lose money when trading CFDs; the figures brokers publish typically fall between about 60% and 80%. You should consider whether you understand how CFDs work and whether you can afford to take the high risk of losing your money.
Results from this gold lot size calculator are estimates based on delayed or illustrative prices and exchange rates and the contract size you enter. Your broker’s contract specification, prices and rounding decide the actual position and loss. The PIP Report is a publisher of financial information and education and is not authorised or regulated by CySEC or any other financial regulator. See the full risk warning, how we are paid and our editorial policy.
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Not investment advice. This is general information and education, written without knowledge of your circumstances. It is not a recommendation to buy or sell any instrument. Past performance is not a reliable indicator of future results. Trading leveraged products carries a high risk of losing money. Risk warning