Professional traders size positions by risk, not by gut feel. Enter your account size, the percent you're willing to lose, your entry and your stop-loss — this returns the exact position size that caps your loss at that amount.
Position size by risk
—
Position size (USD)
—
Quantity (coins)
—
Amount at risk
—
Leverage vs. account
Position size is the notional exposure that makes your stop-loss cost exactly your chosen risk amount. "Leverage vs. account" shows how much leverage you'd need if you posted your whole account as margin — under 1× means no leverage required.
Trader's toolkit
Plan the trade here — then track it.Size every trade by risk, journal it, and find out if you actually have an edge. An Excel/Sheets workbook: position sizer, auto trade journal (R-multiple, PnL, win rate) and an equity-curve dashboard.
Disclosure: links to exchanges may be affiliate links. Crypto trading carries risk; never trade with money you can't afford to lose.
Why position sizing is the most important risk skill
Most blown accounts are not caused by bad entries — they are caused by positions that were far too large for the account. Risk-based sizing flips the problem around: you decide in advance how much you are willing to lose on a trade, then let that number plus your stop-loss dictate the position size.
If price hits your stop, you lose exactly your risk amount — no matter how volatile the asset. A tight stop lets you take a bigger position for the same risk; a wide stop forces a smaller one. That is exactly the behaviour you want.
The 1% rule
A common guideline is to risk no more than 1–2% of your account per trade. At 1% risk you can lose 20 trades in a row and still keep about 80% of your capital — survivable. Risk 10% per trade and a normal losing streak ends your account. Lowering risk per trade is the single highest-leverage change most traders can make.
Once you know the notional, the liquidation and PnL calculators tell you where your stop sits relative to liquidation and what the winners are worth.
Frequently asked questions
How do I calculate crypto position size?
Multiply your account by your risk percentage to get the dollar amount you'll lose if stopped out, then divide by your stop distance as a fraction of entry. The result is the notional position size that caps the loss at that amount.
What percentage of my account should I risk per trade?
Most professionals risk 1–2% per trade. At 1%, even a long losing streak only mildly dents your account, which keeps you in the game long enough for your edge to play out.
Does position size depend on leverage?
No — your risk is set by your stop distance and position size, not leverage. Leverage only determines how much margin the position locks up. This calculator shows the leverage implied if you posted your whole account as margin.
What if my stop is very close to entry?
A tight stop produces a larger position for the same dollar risk, because each coin can only move a little before you're stopped out. Make sure the stop is at a level the market genuinely has to break, not just noise.
After sending, paste your transaction ID (TxID / hash) from your wallet or exchange withdrawal — payment is verified on-chain and your download opens instantly.