Free Trading Tool

    Lot Size Calculator for Seamless Trade Execution

    Turn your target dollar amount into the exact lot size — no mental math required. Built for forex, crypto, stocks, indices, and futures traders.

    When every pip counts, over- or under-shooting your trade volume can derail your strategy.

    This calculator removes the guesswork by translating your desired exposure into the precise lot size — giving you confidence your order matches your plan.

    How It Works

    1

    Enter how much capital you want committed

    Your total trading capital in your account currency.

    2

    Select the asset you’re trading

    Forex, crypto, stocks, indices, or futures — we adjust the math.

    3

    Input your leverage to see margin-adjusted sizing

    Optional — see how much margin a position actually needs.

    4

    Calculate to get lot size and unit breakdown instantly

    Position size, notional, leverage required, and R-multiples.

    Lot Size Calculator

    Use the Lot Size Calculator to determine the exact amount of units to buy or sell per trade based on your risk management rules and account balance.

    Money at Risk
    $100.00
    Stop distance: 0.23%
    Position Size
    40,000 units
    Notional: $43,200.00
    Standard lots: 0.400
    Mini lots: 4.00
    Micro lots: 40.0
    Leverage Needed
    4.32x
    Margin required: $4,320.00
    Reward Targets
    1R target1.0825 (+$100.00)
    2R target1.085 (+$200.00)
    3R target1.0875 (+$300.00)

    Trade with confidence — get the indicators that pair with this calculator

    SimpleAlgo's TradingView indicators give you the entries, stops, and trend context to make this calculator come alive.

    Frequent questions