Pick your firm and plan. Get your lot size and see how much room is left before the daily and maximum loss limits. Built to keep your challenge alive.
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Why position sizing matters
Most prop firm accounts are lost to the daily loss limit, not to bad analysis. This calculator checks every trade against your firm’s limits before you place it.
Trade Parameters
Your Prop Firm
Account Setup
$
1.0%
◆ 0.5% Safe◆ 1–2% Standard◆ 5%+ Aggressive
Pair & Direction
Price Levels
Your Broker
Broker contract details (set by the choice above, you can change them)
Find these in your trading platform: right-click the symbol, then Specification (MT4/MT5). Brokers differ, especially for gold.
Exchange rates used (to turn pip value into your account currency)
These only matter for cross pairs (like GBP/JPY), gold and accounts that are not in US dollars. They are approximate. Type today's prices for the best accuracy. The pair you trade always uses your own entry price.
Account Type
How Your Firm Counts The Daily Limit
Your Numbers Right Now read them from your trading platform. Empty = starting balance
Not sure how your firm counts it? Read this
Firms count the daily limit in different ways, and the answer is often hidden in the terms and conditions. Search your firm's rules for the words daily loss, equity, balance, floating and reset.
Balance only changes when a trade closes. Equity is balance plus the profit or loss of trades still open, so it moves every second. If a firm uses equity, a trade that is losing for a moment can end your challenge even if it comes back.
The daily reset happens at a set clock time (for example midnight in a certain city, or the platform's midnight). A trade held through the reset takes its floating loss into a fresh day.
If you cannot find the answer, keep the strictest settings already selected. That way the calculator never says you are safe when you are not. Use a free trial to confirm how your firm really behaves.
Note: Leverage does not change your position size or risk. It only affects the margin your broker requires to hold the position. Your position size is always calculated from your risk % and stop distance.
Your Results
Ready to calculate
Fill in your account balance, risk percentage, currency pair, and price levels — then hit the calculate button.
How the calculation works
Position size is determined purely by your risk amount and stop loss distance — not by leverage.
Position Size (lots) = (Balance × Risk%) ÷ (Stop Loss Pips × Pip Value per Lot)
For standard lots (100,000 units): USD pairs = $10/pip · JPY pairs = ~$9.09/pip · Gold (XAU/USD) = $10/pip per $0.10 move
Risk Disclaimer: This calculator is for educational purposes only. Forex trading carries significant risk of loss and is not suitable for all investors. Pip values and margin requirements vary by broker. Always verify results with your broker before placing a trade. Visit Chess Traders for coaching, programs and live market guidance.
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