Start with an account and a risk amount
Account balance is the capital used for this calculation. Risk per trade is the portion of that balance used as an intended loss limit if the stop executes at its planned price. For a $10,000 account and a 1% risk input, the calculated risk amount is $100. A risk input above 100% would exceed the account itself, so HandyCalcHub rejects it.
Entry, stop, and stop distance
For a long setup, the planned stop is below entry. For a short setup, it is above entry. The dollar stop distance is the absolute difference between those two prices. It describes the modeled loss per one unit of crypto if entry and stop execute exactly as entered. A zero distance cannot define a position size.
Calculate quantity and position value
Quantity = risk amount ÷ stop distance. Position value = quantity × entry price. In a hypothetical long setup with a $60,000 entry and $58,500 stop, the distance is $1,500. A $100 risk amount gives $100 ÷ $1,500 = about 0.06666667 units. At $60,000 each, that is a position value of about $4,000.
| Input or result | Calculation | Value |
|---|---|---|
| Risk amount | $10,000 × 1% | $100 |
| Stop distance | $60,000 − $58,500 | $1,500 |
| Crypto quantity | $100 ÷ $1,500 | 0.06666667 |
| Position value | Quantity × $60,000 | About $4,000 |
| Margin at 5x | $4,000 ÷ 5 | About $800 |
Short setups use the same distance
For a hypothetical short at $60,000 with a $61,500 stop, the distance is also $1,500. With the same $100 risk amount, the calculated quantity and position value are the same. The direction changes; the arithmetic uses the absolute distance.
Leverage is not the risk input
Leverage changes the estimated margin needed to open a position: margin = position value ÷ leverage. The example's $4,000 position needs about $4,000 at 1x or $800 at 5x, ignoring exchange-specific requirements. If the calculated margin is larger than the account balance, the proposed size is not fundable under this simplified model; the calculator now shows a validation message instead of presenting it as usable.
Higher leverage does not make a stop order reliable or prevent liquidation. Fees, funding, spread, and price movement can affect the account differently from the simple stop-distance estimate. A very tight stop can mathematically produce a huge quantity, which may fail margin or exchange limits.
Important limits
Actual stops can slip or fail to fill at the specified price, so realized loss can exceed the intended risk amount. Exchange minimums, quantity steps, contract terms, maintenance margin, liquidation, and fees can also alter the result. Check an exchange's rules and your own records before relying on a trade size. This guide is educational and is not financial, investment, or trading advice.
Key takeaway
Risk amount divided by stop distance gives a modeled quantity. Multiply by entry for position value, then divide by leverage for estimated margin; real losses can differ.