Blocktechpro
XAU/USDGold
EUR/USDEuro / US Dollar
GBP/USDBritish Pound / US Dollar
USD/JPYUS Dollar / Japanese Yen
US30Dow Jones index CFD
XAG/USDSilver
XAU/USDGold
EUR/USDEuro / US Dollar
GBP/USDBritish Pound / US Dollar
USD/JPYUS Dollar / Japanese Yen
US30Dow Jones index CFD
XAG/USDSilver

Lot Size Calculator for Forex and Gold (XAUUSD)

Work out how many lots to trade so that a trade stopped out at your stop-loss loses no more than the share of your account you chose. Pick the instrument, enter your balance, risk per trade and stop-loss in pips. The result is rounded down to the nearest 0.01 lot, so it never risks more than planned. It covers forex pairs, gold (XAU/USD) and US30, and works with USD, Indian rupee (₹) and Nigerian naira (₦) accounts.

ℹ️ 1 lot = 100,000 EUR ($10.00 per pip)

$2,000 USD
1%
25 Pips
Rule of thumb: many traders cap risk at 1–2% of the account per trade. Prices can gap past your stop, so actual losses can be larger.
POSITION SIZEConservative
Recommended lot size
0.08 Lots
Value per pip: $0.8 USDPosition size in units: 8,000 EUR
Loss if stop-loss is hit:-$20 USD (1.0%)
Profit at a 1:2 risk/reward target:+$40 USD
Compare Low-Spread Brokers

Trading from India or Nigeria? Check the rules first

India

Nigeria

The calculators only do arithmetic; they do not mean any broker is available, licensed or legal where you live.

Lot size formula

Risk amount = Balance × Risk % ÷ 100

Lot size = Risk amount ÷ (Stop-loss in pips × Pip value per 1 lot)

One standard lot is 100,000 units of the base currency. For pairs quoted in US dollars (EUR/USD, GBP/USD) one pip (0.0001) is worth $10 per standard lot, $1 per mini lot (0.10) and $0.10 per micro lot (0.01).

For pairs where the US dollar is the base currency, the pip value per lot is 100,000 × pip size ÷ exchange rate. For USD/JPY (pip size 0.01) that is 1,000 ÷ the USD/JPY rate, so it changes as the rate moves; the calculator uses an approximate $6.70. Gold uses 100 oz per lot and US30 assumes $1 per point per lot; both vary by broker.

Worked examples

EUR/USD, $5,000 account, 1% risk

  1. Risk = $5,000 × 1% = $50
  2. Stop-loss = 25 pips × $10 = $250 per lot
  3. Lots = $50 ÷ $250 = 0.20

Trade 0.20 lots: a stop-out loses $50 (1%).

GBP/USD, $1,000 account, 2% risk

  1. Risk = $1,000 × 2% = $20
  2. Stop-loss = 30 pips × $10 = $300 per lot
  3. Lots = $20 ÷ $300 = 0.0667
  4. Round down to 0.06 lots

Trade 0.06 lots: a stop-out loses $18 (1.8%).

Gold (XAUUSD), $1,000 account, 1% risk

  1. Risk = $1,000 × 1% = $10
  2. Stop = $4.00 move ÷ $0.10 = 40 pips
  3. Per lot = 40 pips × $10 = $400
  4. Lots = $10 ÷ $400 = 0.025, round down to 0.02

Trade 0.02 lots (2 oz): a stop-out loses $8 (0.8%).

EUR/USD, ₦1,000,000 account, 1% risk

  1. Risk = ₦1,000,000 × 1% = ₦10,000
  2. At USD/NGN 1,500 (example): ₦10,000 ÷ 1,500 = $6.67
  3. Stop-loss = 20 pips × $10 = $200 per lot
  4. Lots = $6.67 ÷ $200 = 0.033, round down to 0.03

Trade 0.03 lots: a stop-out loses $6 (about ₦9,000).

Examples use US-dollar pip values and the contract sizes shown in the calculator; rupee and naira examples use illustrative rates (USD/INR 88, USD/NGN 1,500), not live quotes. Check your broker's contract specification; a gap or slippage past your stop can make the real loss larger.

Frequently asked questions

How do I calculate lot size in forex?

Multiply your balance by the percentage you want to risk to get the risk amount, then divide it by your stop-loss in pips multiplied by the pip value of one lot. Example: $5,000 × 1% = $50; with a 25-pip stop on EUR/USD ($10 per pip per lot) the lot size is $50 ÷ $250 = 0.20 lots.

What is 1 standard lot, mini lot and micro lot?

In forex 1 standard lot (1.00) is 100,000 units of the base currency, a mini lot (0.10) is 10,000 units and a micro lot (0.01) is 1,000 units. On EUR/USD that makes one pip worth about $10, $1 and $0.10. On gold, 1 lot is usually 100 oz.

Why does the calculator round the lot size down?

Most brokers accept lot sizes in steps of 0.01. Rounding up would risk more than you planned, so the calculator rounds down and shows the actual loss at your stop-loss. If the result is below 0.01 lot, the trade risks more than your limit even at the smallest size; widen your risk budget or tighten the stop only if your strategy allows it.

Does leverage change the lot size?

No. With fixed-percentage risk, the lot size depends on balance, risk % and stop-loss distance. Leverage only changes the margin the broker holds while the trade is open. Higher leverage lets you open the same position with less margin; it does not make the stop-out smaller.

Is the lot size the same at every broker?

For major forex pairs the contract size of 100,000 units is standard. Gold, indices and some cent or micro accounts use different contract sizes, so check the contract specification in your MT4, MT5 or cTrader platform before you trade.

Can I use the lot size calculator with an INR or NGN account?

Yes. Choose 'INR (₹)' or 'NGN (₦)', enter your balance in rupees or naira and the rate your broker uses to convert your deposit. The calculator converts your risk to US dollars, because pip values on these instruments are in USD, and shows the loss at your stop in both currencies. Example: ₹1,00,000 at 1% risk is ₹1,000, about $11.36 at a rate of 88. With a 20-pip stop on EUR/USD ($200 per lot) the lot size is 0.05 lots, and a stop-out loses $10 (about ₹880). The same 1% risk on ₦1,000,000 at an example rate of 1,500 per dollar gives 0.03 lots.

Related tools and guides