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Lot size calculator

Find how many lots to trade, so a trade that hits your stop loses only the amount you choose.

Example — change it
Broker

Each broker sets its own sizes and costs.

Costs and sizes can differ by account type.

Sample data. Check every value with your broker.

The pair or coin you trade.

Contract size 100,000 · Pip size 0.0001

Sample Sample values. Check them with your broker.

Source: get.exness.help Values checked on 28 Oct 2026.

The money in your trading account.

Set your risk asRisk per tradeThe money you accept to lose if one trade hits its stop loss, often shown as a percent.More in the glossary

Many traders keep the risk on one trade small. 1% is a common example, not a rule.

Set your stop lossStop lossAn order that closes your trade if the price reaches a level you set, to limit the loss.More in the glossary
PipA small, standard price step. On most pairs it is the fourth decimal place, on yen pairs the second.More in the glossary

How far your stop is from your entry.

Account currencyThe currency your trading account is in. Results are converted into it.More in the glossary

The currency your trading account is in.

SpreadThe small gap between the buy price and the sell price. It is part of what a trade costs.More in the glossary

Your rebate is a share of the spread. Enter the spread your platform shows.

Lots to trade

0.20

Trade 0.20 lots to risk about $100.00 if your stop is hit.

Money at risk
$100.00
Pip value for this size
$2.00
Stop distance
50 pips
Loss if the stop is hit
$100.00, or 1% of your balance
Commission (open and close)
$0.00
  • Enter the spread to see your rebate on this trade.
See what you'd get back on these lots
Spec used for EUR/USD
Symbol at Exness
EURUSD
Contract size
100,000 EUR per lot
Pip size
0.0001
Price decimals
5
Trade size (lots)
Min 0.01 · step 0.01 · max 200Sample value — check with your broker
Margin
Leverage-based, in the base currency
Maximum leverage
Not listedSample value — check with your broker
Commission
0 USD per lot, each sideWorked out from the broker's figure
Swap long / short
Not listedSample value — check with your broker
Swap charged 3 times on
Wednesday
RebateFX rebate
10% of the spreadSample value — check with your broker

Sources · Checked on 28 Oct 2026.

How this is calculated
  • Lots = (balance × risk %) ÷ (stop in pips × pip value of 1 lot).
  • We round down to the lot step, never up.
  • Commission: per lot, each side × lots × 2 (open and close).
  • Rebate: the rate per lot × lots, or the rate % of the spread or of the fee.

Estimate only. Spread is not included, and other costs only where a line shows them. Your trading terminal shows the exact numbers. This is not investment advice. Read the risk disclosure

How to calculate lot size

Start from the money you accept to lose. Then let the stop decide the size.

  1. Turn your risk into money: balance × risk %.
  2. Measure your stop: the distance in pips from your entry to your stop loss.
  3. Divide the money at risk by (stop in pips × pip value of 1 lot).
  4. Round down to your broker's lot step, so the real risk stays at or below your choice.

Worked examples

The first example uses the calculator's example values; the others change the product and inputs. Every result comes from the calculator above.

  1. EUR/USD on a $10,000.00 account

    • Money at risk: $10,000.00 × 1% = $100.00.
    • Stop: 50 pips. On 1 lot, each pip is worth $10.00.
    • $100.00 ÷ (50 × $10.00) = 0.2, rounded down to 0.20 lots.

  2. XAU/USD on a $5,000.00 account

    • Money at risk: $5,000.00 × 1% = $50.00.
    • Stop: 300 pips. On 1 lot, each pip is worth $1.00.
    • $50.00 ÷ (300 × $1.00) = 0.1667, rounded down to 0.16 lots.

  3. USD/JPY on a $2,000.00 account

    • Money at risk: $2,000.00 × 2% = $40.00.
    • Stop: 30 pips. On 1 lot, each pip is worth $6.25.
    • $40.00 ÷ (30 × $6.25) = 0.2133, rounded down to 0.21 lots.

Common mistakes

  • Picking the lot size first. Set the stop first, then let it decide the size.
  • Using the pip value of another pair. It changes with the pair and your account currency.
  • Expecting the stop to fill at its exact price. In fast markets it can fill worse.
  • Moving the stop further away but keeping the same lots. A wider stop needs fewer lots for the same risk.

How a rebate changes this

Size the trade without the rebate

Keep sizing from your stop, and leave the rebate out of the sum. A rebate returns part of your fees, but it does not turn a losing trade into a winning one.

Questions

Is 1% a rule?

No. It is a common example in trading guides. The right amount depends on what you can afford to lose.

Why is the result rounded down?

Brokers accept lots in fixed steps. Rounding down keeps your real risk at or below the amount you chose.

What if the result is below the smallest lot?

Then even the smallest trade risks more than you chose. The tool shows how much, so you can decide.

Already trading? Part of your fees can come back.

Open your account through RebateFX, and the broker pays part of your fees back to you. Your spread and fees stay the same.

Compare rebates