LIQUID STATE · free tools

Position Sizing Calculator

Enter your account size, risk percentage, entry price, and stop-loss to instantly calculate your position size, dollar risk, and implied leverage. Add a target to see your risk/reward ratio.

Risk Amount
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Position Size (USD)
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Position Size (units)
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Implied Leverage
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This calculator is for educational purposes only. Not financial advice. All trading involves risk. Always manage your own position sizing independently.

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How to size positions like a professional crypto trader

The 1–2% rule is the foundation of professional position sizing: never risk more than 1–2% of your total account on any single trade. This rule ensures a losing streak — even 10 consecutive losing trades — doesn't wipe out your account. At 1% risk per trade, 10 losses in a row reduces your account by roughly 9.6%, not 10%, because each loss is calculated on a smaller base.

The R-multiple framework standardises every trade. 1R is the amount you're risking on a trade. A 2R win returns twice your risk. Before entering any position, know your 1R in dollar terms — that's what this calculator outputs as "Risk Amount." If a trade idea doesn't offer at least 1.5R upside, the math doesn't justify the risk.

Stop-losses should be placed at technically meaningful levels — below a recent swing low for longs, above a swing high for shorts — not at round-number percentages. The calculator derives your position size from your stop placement automatically: move your stop further away and your position size shrinks; tighten it and the position grows. The risk stays constant; the structure decides the size.

Implied leverage is a useful sanity check. In spot markets (leverage = 1×), your maximum position is your full account. On derivatives, many platforms allow 20× or 100× — but professional traders rarely use more than 3–5× effective leverage. If this calculator shows implied leverage above 5×, reconsider the stop-loss placement or reduce the risk percentage.

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Frequently asked questions

What is a crypto position sizing calculator?
A position sizing calculator converts an account size, a risk percentage, an entry price, and a stop-loss price into the actual position size for a trade — the dollar amount risked, the position size in both USD and units, and the implied leverage that position represents against the stated account size. Rather than picking a position size directly, the trader sets how much they are willing to lose if the stop is hit, and the calculator derives the size that matches that risk.
What is the 1-2% rule in position sizing?
The 1-2% rule caps the dollar risk on any single trade at 1% to 2% of total account size, regardless of how large the position itself is. Because each loss is calculated against a progressively smaller account balance, a string of losing trades compounds more slowly than the raw percentage suggests — at 1% risk per trade, ten consecutive losses reduces an account by roughly 9.6%, not a full 10%. It is a risk-management convention for sizing losses, not a limit on whether a loss can occur.
What is an R-multiple or risk/reward ratio?
1R is the dollar amount risked on a trade, defined by the distance between entry and stop-loss multiplied by position size. A 2R win returns twice the amount risked; a 2R loss is not possible by construction, since the position is sized to lose exactly 1R if the stop is hit. Expressing outcomes in R-multiples lets trades of very different position sizes and price levels be compared on the same scale, though it says nothing about the probability that any given trade reaches its target.
Does implied leverage from this calculator tell me how much leverage to use?
Implied leverage here is the calculated position size in USD divided by account size, showing how much exposure a given stop-loss distance and risk percentage produce — it is a diagnostic reading of the position the inputs generated, not a recommendation for how much leverage to take on. This calculator is provided for educational purposes only, is not financial advice, and does not account for exchange-specific liquidation mechanics or fees.
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