Position Size Calculator
Never risk the wrong amount again. Enter your balance, the risk you'll take, and your entry and stop, and get the exact position size and lot size in a second. Works for forex, crypto and stocks, and for orders on MT4 or MT5.
Your trade
Now let it place the trade at that size.
Signal Copier Pro sizes every signal you follow to your risk, exactly like this, and executes it on your exchange or MT5 account in about a second. No more manual math mid-move. Learn the method in the position sizing guide, and check your odds with the risk of ruin calculator.
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How the calculation works
Position sizing is the one habit that separates traders who last from those who blow up. Instead of guessing a lot size, you decide how much of your account you're willing to lose on a trade, and let the distance to your stop set the size. The math:
risk / unit = | entry − stop |
position size = risk amount ÷ risk per unit
So on a $10,000 account risking 1% ($100), with an entry at 100 and a stop at 98 (a $2 risk per unit), you'd size 50 units, because 50 × $2 = exactly the $100 you chose to risk. Widen the stop and the size shrinks; tighten it and the size grows. Your dollar risk stays fixed, which is the whole point.
Size every trade this way, automatically
- Connect the channels you follow. Discord or Telegram, in about a minute.
- Set your risk once. Your percentage per trade, the same number you'd type above.
- Every signal is sized & placed for you. On your exchange or MT5 account, in about a second, at exactly the size this calculator would give you.
Common questions
How do you calculate position size?
Multiply your account balance by the percentage you are willing to risk to get your risk amount, then divide that by the distance between your entry and your stop-loss. On a $10,000 account risking 1% ($100) with an entry at 100 and a stop at 98, the risk per unit is $2, so the position size is 50 units.
How do I calculate lot size for MT4 or MT5?
MT4 and MT5 take order volume in lots. For forex, one standard lot is 100,000 units of the base currency, so divide the position size in units by 100,000 to get standard lots (a mini lot is 0.1 and a micro lot is 0.01). Metals, indices and CFDs can use different contract sizes, so check the symbol specification in your terminal.
Does this position size calculator work for crypto and stocks?
Yes. The formula only needs your balance, risk percentage, entry and stop-loss, so it works for crypto, stocks, forex and most CFDs. For crypto and stocks the result in units is the number of coins or shares to buy or sell.
What risk per trade should I use?
There is no single right number, and this is not financial advice. Many traders keep risk between 0.5% and 2% of the account per trade so a losing streak cannot do serious damage. Funded and prop-firm accounts often call for the lower end because of their daily and maximum loss limits. See how risk per trade changes your odds with the risk of ruin calculator.
This calculator is an educational tool, not financial or investment advice. It assumes a linear profit/loss per unit of price (true for spot, forex and most CFDs); instruments with contract multipliers or variable pip values may differ. You are responsible for your own trading decisions.