Bitcoin Position Size Calculator
Size every bitcoin trade to your exact risk. Enter your balance, risk and stop and get the position in BTC, the dollar risk and the reward-to-risk.
Position size calculatorSized directly in BTC ($1 P/L per $1 move per coin).
How a BTC/USD lot works
Bitcoin is sized in coins: a $1 move is worth $1 per 1 BTC held. Most CFD brokers also make 1 lot = 1 BTC; on exchanges you enter the BTC amount directly.
Leverage on perpetual futures does not change the size — it only changes the margin. Size from the stop, then check the margin fits.
Bitcoin's stops are measured in hundreds of dollars, so positions are fractions of a coin. That is normal: a $600 stop risking $100 is 0.167 BTC.
BTC/USD lot sizes at a glance
Worked out with the calculator above. Left: a $10,000 account risking 1% ($100). Right: a $100,000 prop firm account risking 0.5% ($500).
| Stop | $10,000 · 1% | $100,000 · 0.5% |
|---|---|---|
| $300 stop | 0.33 BTC | 1.67 BTC |
| $600 stop | 0.17 BTC | 0.83 BTC |
| $1,200 stop | 0.083 BTC | 0.42 BTC |
| $2,500 stop | 0.04 BTC | 0.20 BTC |
Sized directly in BTC ($1 P/L per $1 move per coin).
Frequently asked questions
How do I calculate position size for bitcoin?
Size = risk ÷ stop distance in dollars. Risking $100 with a $600 stop is 100 ÷ 600 ≈ 0.167 BTC.
Does leverage change my bitcoin position size?
No. Leverage changes how much margin the position ties up, not how much you lose at your stop. Size from the stop first.
Is 1 lot of BTCUSD one bitcoin?
On most CFD brokers, yes. Some use 0.1 or 0.01 BTC per lot — check the contract spec.
Lot size calculators for other markets
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