Position Size & Risk Calculator.
Enter account size, risk %, entry, and stop to get your exact position size in units and USD notional, plus reward-to-risk. See what you buy vs what you risk.
Max loss
$100
-1.00% of account
Target profit
$350
3.50 : 1 reward/risk
Risk per unit
$2,000
3.08% from entry
Stop distance
3.08%
$2,000
You risk $100 if your stop hits, but your position is worth $3,250. A reward-to-risk of 3.50:1 is a disciplined setup.
Understanding your results.
A rigorous breakdown of the mathematical equations, market assumptions, and step-by-step calculations powering this tool.
The calculator shows four numbers that work together:
- Position size (units) — how many coins to buy or short. The large number is the core output.
- Notional value — the total dollar value of the position. This is usually much larger than your risk because your stop loss sits closer than your target.
- Max loss — exactly what you lose if the stop is hit. It equals your risk percentage of the account, by design.
- Reward-to-risk — your target profit divided by your max loss. Aim for 2:1 or better.
The single most common beginner mistake is confusing the notional value with the amount at risk. A $5,000 position does not mean you are risking $5,000; with a 1% account risk on $10,000, you are only risking $100.
How to use this tool.
Step-by-step workflow instructions to get the most accurate calculations for your trading strategy.
- Enter your account size in dollars.
- Choose your risk percentage (1-2% is the standard guideline).
- Enter your entry price and stop loss. For a long, the stop must be below entry; for a short, above.
- Optionally add a take-profit target to see your reward-to-risk ratio.
- Read the position size in units and place that exact quantity on your exchange.
TradingView
ChartsDraw your entry, stop, and target directly on the chart to see your risk-reward visually before you trade.
Open TradingViewBybit
ExchangeSpot and derivatives with precise order types so you can enter the exact position size the calculator recommends.
Trade on BybitHow we choose partners. We may earn a commission at no cost to you.
Privacy & safety.
No data leaves your browser. This calculator is pure client-side arithmetic. Your account size and trade levels are never sent to a server, stored, or shared.
Position sizing follows the standard fixed-fractional risk model used in professional trading. Verify the final numbers on your exchange before placing any order.
Frequently asked questions.
Read the guide.
You might also like.
Crypto Swap & On-Ramp Fee Navigator
Calculate true on-ramp exchange fees and spread markups before trading.
Crypto Scam & Phishing Threat Checker
Scan DMs, smart contract links, and yield claims for malicious patterns.
Bitcoin Halving Countdown
Days, blocks, and the cycle model.