Does this calculate perpetual or leveraged positions?
No. This tool is for a long spot-style position on a USD quote basis. Derivative multipliers, funding, maintenance margin and liquidation require a separate venue-specific model.
Free spot-crypto risk tool
Crypto position size calculator
Choose a risk budget, define entry and invalidation, then estimate a long spot quantity including costs. This calculates quantity, not a price forecast or liquidation level.
TradeStreamAI Editorial Team · Updated · Assumptions and corrections
Free to useNo signup requiredTransparent formula
Jump to calculator Quick answer
How do I calculate a crypto position size?
Divide your money-risk budget by the loss per coin from entry to stop plus estimated entry/exit costs. Round down to the exchange quantity increment and check that the purchase fits your cash balance.
Calculate a long spot-crypto quantity
All prices and defaults are illustrative, not live market data. Uses a USD quote basis and caps entry cost at the supplied cash balance. No leverage, short borrowing or liquidation calculation.
Risk budget
$100.00
Maximum coin quantity
0.089365
Planned loss including estimated costs
$100.00
Estimated round-trip costs
$10.63
Notional at entry
$5,361.90
Quantity is rounded down to your increment. A stop is not a guaranteed fill: gaps, slippage and costs above your estimate can increase the actual loss.
The quantity formula
Risk budget = balance × chosen risk percentage. Loss per coin = entry minus stop + (entry + stop) × fee percentage per side + other round-trip costs per coin. Quantity = risk budget ÷ loss per coin, rounded down; the cash requirement can reduce it further.
A worked example before fees
With a $10,000 illustrative balance and a chosen 1% risk, the budget is $100. Entry at $60,000 and a stop at $59,000 imply $1,000 of price risk per coin, or 0.1 coin before costs. Fees increase loss per coin and reduce quantity. The default fee-inclusive result deliberately differs from that simplified example.
Check the exchange minimum order value as well as its quantity increment. Use the risk/reward calculator for target scenarios; neither calculation decides whether a trade is appropriate.
Frequently asked questions
Questions about this free tool
Does the position size guarantee my loss is capped?
No. Stops can slip and prices can gap. The result is a planning estimate using your supplied costs and prices.
Is this the same as the crypto profit calculator?
No. Position sizing estimates quantity before entry. The profit calculator estimates entry-to-exit P/L for a quantity you already chose.
Plan the trade before risking capital
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