⚖ Risk management tools
Crypto position size calculator · risk in dollars, not vibes
Calculate the exact crypto position size that limits your downside to a fixed dollar (or %) amount, given your stop-loss. Built-in presets for 0.5%, 1%, 2%, and 5% account risk — the same framework used by professional traders.
Aggressive
0.5%
scalping · day trading
Standard
1%
most retail traders
Moderate
2%
swing trades
High conviction
5%
max for any single trade
Risk a fixed percentage of your account on every trade. Enter your account size, stop-loss distance, and risk tolerance — we'll tell you exactly how many units to buy.
Inputs
Pro tip: most experienced traders risk 0.5–2% per trade.
Where you'll exit if the trade goes against you. Below entry for longs, above for shorts.
Output
Position size (units)
—
Position value
—
Dollar risk
—
Stop distance
—
Account % at risk
—
Worked examples
EXAMPLE 1 · BTC LONG
$10,000 account, 1% risk, BTC at $50,000, stop at $47,500
- Dollar risk: $100
- Stop distance: $2,500 (5%)
- Position: 0.04 BTC ($2,000)
EXAMPLE 2 · ETH LONG
$25,000 account, 2% risk, ETH at $3,000, stop at $2,820
- Dollar risk: $500
- Stop distance: $180 (6%)
- Position: 2.78 ETH ($8,333)
EXAMPLE 3 · SOL LONG
$5,000 account, 0.5% risk, SOL at $150, stop at $138
- Dollar risk: $25
- Stop distance: $12 (8%)
- Position: 2.08 SOL ($313)
FAQ
What's "risk per trade" and why does it matter?
It's the maximum dollar loss you'll accept on any single trade, expressed as a percentage of your account. Risking 1% on each trade means you'd need 100 consecutive losers to wipe out — so a string of 5 or 10 losing trades is survivable. Risk too much per trade and one bad streak takes you out.
How is position size calculated?
Units = (Account × Risk%) ÷ (Entry − Stop). Then position value = Units × Entry. The formula sizes the position so that if your stop is hit, the loss equals your target dollar risk — regardless of asset volatility or price.
Does this work for short positions?
Yes — for a short, your stop is above entry. The calculator uses the absolute difference, so |Entry − Stop| works either way. Just enter the prices and risk; the math is symmetric.
Should I include exchange fees in the position size?
For crypto spot trades fees are usually 0.1% per side, so they're a small fraction of a 1% risk budget. For leverage trading on derivatives, fees compound — subtract estimated fees from your risk budget before sizing.
What's the relationship between stop distance and position size?
Inverse. Tight stop (1% away) → big position. Wide stop (10% away) → small position. The dollar risk stays constant regardless of which you pick — so a tight stop in a volatile asset risks being stopped on noise, while a wide stop limits how much you can buy.
Background
Why position sizing matters more than entry
The biggest single difference between profitable and unprofitable retail traders isn't picking better entries — it's sizing positions correctly. Pros risk a fixed percentage of account per trade so a string of losses can't blow them up. Amateurs size by feel, then average down a losing position until they capitulate at the bottom.
The math is brutal but instructive: a 50% drawdown requires a 100% gain to recover. A 75% drawdown requires a 300% gain. Keep your downside small and the math stays winnable. The 1-2% rule (never risk more than 1-2% of account on any single trade) survives any losing streak short of statistically impossible.
This calculator implements the standard fixed-fractional sizing formula: position_size = (account × risk%) / (entry − stop). Plug in your account balance, the entry price, the stop-loss price, and your risk tolerance — get the exact unit count or dollar amount.
Two caveats: (1) the formula assumes your stop will actually fill at the stop price, which is not guaranteed during fast moves — leave headroom. (2) crypto liquidity varies wildly by coin. For sub-$100M-mcap tokens, slippage can blow through your stop. Size down on illiquid coins.
FAQ
Position sizing — frequently asked questions
What account risk percentage should I use?
Most professional traders cap any single trade at 1% of account equity. That means a 10-trade losing streak takes you down ~10%, recoverable. If you're new to crypto, start at 0.5% — the volatility will surprise you.
Is this for spot or leveraged trading?
Both work. For leverage, your "position size" is the notional value, not the margin you put up. Risk-percentage logic applies identically: a 1% account risk means a stopped-out leveraged position loses 1% of account, just like spot.
Why does my position size feel "too small"?
That's the calculation working. Risking 1% on a trade with a 20% stop means your position is 5% of account — feels modest. But it lets you take 10+ trades through a drawdown and survive. The discipline is what compounds.
Should I always use a stop-loss?
Yes for any sized position you'd lose sleep over. Stops can fail in fast markets (slippage) but discipline beats hope. For unsized "ride or die" long-term positions, the alternative to a stop is just sizing tiny — same math.
How does this differ from Kelly criterion?
Kelly maximizes long-run growth given known win rate + win/loss ratio. Fixed-fractional (this calculator) is simpler and more practical because you rarely know your true edge precisely. Most pros use fractional Kelly (½ Kelly or less) which converges toward fixed-fractional.
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Guide
How to size a crypto position correctly
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1
Enter your account balance
Type your total trading account balance in USD — the calculator does not need access to your exchange.
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2
Pick your risk per trade
Choose 1% (beginners), 2% (experienced), or 5% (high-conviction only). Anything above 5% is statistically catastrophic over a 50-trade sample.
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3
Enter your entry price
The price you plan to fill at — limit price or current market.
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4
Enter your stop-loss
The price at which you accept you are wrong and exit. Use ATR(14) × 1.5 or below the nearest swing low.
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5
Read your position size
The output shows units of the asset, dollar exposure, and the dollar amount you stand to lose if the stop is hit.
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6
(Optional) Adjust until it feels right
If the suggested size feels too small, tighten the stop (closer to entry) — not raise the risk %.
FAQ
Frequently asked questions about the crypto position size calculator
What is position sizing in crypto trading? +
What is the 1% rule? +
How is crypto position size calculated? +
Should I use 1%, 2%, or 5% risk per trade? +
What is the difference between position size and leverage? +
Does this calculator work for futures and perpetuals? +
What stop-loss distance should I use? +
Why does the calculator suggest a smaller size than I want? +
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