Capital Preservation Model✎ Fixed Fractional Bet Sizing

Crypto Position Size & Risk Calculator

Protect your capital by sizing positions scientifically. Determine exact unit purchases based on your account risk tolerance and distance to structural invalidation.

Educational Disclaimer: This calculator provides mathematical estimations based on idealized execution. It does not account for exchange network latency, gap risk, or market illiquidity during extreme volatility. It does not guarantee profitability or protect against execution slippage.

Crypto Position Size & Risk Calculator

Calculate mathematical position sizing based on fixed capital risk, distance to stop-loss, and round-trip fee slippage.

Account Balance ($ USD)

Account Risk (%)

Entry Price ($)

Stop-Loss Price ($)

Target / Take Profit ($)

Leverage (Educational)

Est. Trading Fee per Trade (%)

Position size adjusts automatically so your maximum dollar loss equals your risk parameter regardless of leverage.

Mathematical Position Breakdown

Max Dollar Risk

$150.00

(1.5% of equity)

Stop Distance

2.69%

$1800.00 per unit

RECOMMENDED POSITION SIZE

0.0798 Units

Total Notional Value: $5,347.68

Initial Margin Required:$5,347.68

Estimated Round-Trip Fees:$6.33

Reward / Risk Ratio (R:R):2.35 : 1 ($352.54 gain)

Formula: Units = (Balance × Risk%) ÷ ( |Entry - StopLoss| + RoundTripFees )

Mathematical Principles Behind Position Sizing

The primary failure mode of retail cryptocurrency traders is arbitrary position sizing—risking varying percentages of equity per trade based on emotional conviction. Professional quantitative risk management relies on Fixed Fractional Capital Allocation:

Dollar Risk = Account Equity × (Risk Percentage ÷ 100)
Loss Per Unit = | Entry Price − Stop Loss Price | + Round-Trip Fees
Position Units = Dollar Risk ÷ Loss Per Unit
Notional Value = Position Units × Entry Price

Why Leverage Does Not Increase Risk When Sized Properly

A common misconception is that leverage inherently increases risk. In quantitative portfolio management, position size (units) dictates dollar risk, whereas leverage merely determines the initial collateral (margin) held by the exchange. If your stop-loss is placed at 2% adverse excursion and your unit size is calculated to lose exactly $100 upon trigger, you will lose $100 whether using 1x spot or 3x isolated leverage (excluding differences in borrow fees and liquidation distance).