What is the fixed-percentage risk model?

It is a position-sizing method where you risk a fixed percentage of your account on every trade (e.g., 1%). This keeps losses proportional to your balance and prevents any single trade from being catastrophic.

What risk percentage should I use?

Most professional traders risk between 0.5% and 2% per trade. Beginners are advised to start at 1% or lower. Risking more than 3% per trade significantly increases the chance of a large drawdown.

Does this account for exchange fees?

No. The calculator uses the pure risk model. Add a small buffer (e.g., 0.1–0.2%) to your risk percentage to account for trading fees if needed.

What if my stop-loss is above my entry (short trade)?

For a short trade your stop-loss is above the entry price. Enter both values and the calculator will handle the absolute difference automatically, giving you the correct position size for either direction.

Is position size the same as leverage?

No. Position size is the number of units you trade. Leverage amplifies your exposure beyond your capital. This tool calculates the appropriate position size for your risk; you should apply leverage only if you fully understand the additional risk it introduces.

Crypto Position Size Calculator

Enter your account balance, risk percentage, entry price, and stop-loss price to instantly calculate the optimal position size for any crypto trade.

Trade Parameters

Account Balance (USD)

Risk Per Trade (%)

Recommended: 1–2% for most traders

Entry Price (USD)

Stop-Loss Price (USD)

Works for both long (below entry) and short (above entry) trades

Enter your trade parameters and click
Calculate to see your optimal position size

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Summary

The Crypto Position Size Calculator uses the fixed-percentage risk model to determine how many units of a cryptocurrency you should buy or sell on a given trade. By defining the maximum dollar amount you are willing to lose (your risk per trade) and the distance between your entry price and stop-loss price (your risk per unit), the calculator derives the exact position size that keeps your risk within your chosen limit. This approach is the foundation of professional trading risk management.

How it works

Enter your total account balance in USD.
Set the percentage of your account you are willing to risk on this trade (commonly 1–2%).
Enter the price at which you plan to enter the trade.
Enter your stop-loss price — the level at which you will exit if the trade goes against you.
The calculator divides your dollar risk by the per-unit risk (entry minus stop-loss) to produce the optimal position size in units and USD.

Use cases

Sizing a Bitcoin long trade with a defined stop-loss below support.
Calculating how many ETH tokens to buy while keeping losses under 1% of capital.
Adjusting position size when trading altcoins with high volatility and wide stops.
Comparing position sizes across different risk percentages before entering a trade.
Teaching new traders the importance of risk-per-trade discipline.
Verifying that a planned position does not exceed your maximum risk budget.

Frequently Asked Questions

Last updated: 2026-10-05 · Reviewed by Nham Vu