Dollar Movement directly equals Dollar Risk
1 full BTC contract moves $1.00 for every $1.00 shift in market price. Holding 0.100 BTC means every $1,000 drop costs $100 USD.
Crypto · 1 BTC Standard Contract
Bitcoin Position Size Calculator (BTC/USD)
Calculate fractional BTC position sizing based on your dollar risk budget and technical invalidation level. Sized to 0.001 BTC decimal precision.
1 BTC = 1 BTC · 1 USD / BTC = $1 / BTC
Single Trade Risk%
Advanced SpecificationsContract size, entry price & leverage
Minimum lot increment0.001 BTC
Contract specifications may vary by broker. Verify your broker's trading specification window.
Bitcoin · BTC/USD Contract Specifications
Specifications derived from standard institutional Bitcoin · BTC/USD contracts.
Contract Size1 BTC / BTC1:1 Unit
Risk Distance Unit1USD / BTC
Minimum Lot Step0.001 BTCFloor increment
Quote CurrencyUSDBase: BTC
Step-by-step arithmetic
Bitcoin Position Sizing Walkthrough
Account equity $10,000 USD, 1% risk budget ($100 USD), Long BTC/USD with a $1,000 USD technical stop distance.
Equity Base$10,000 USDAccount Capital
Risk Budget1.0% ($100.00 USD)Max Stop Loss
Stop Distance$1,000 USD / BTCChart Invalidation
Suggested Position0.100 BTCFloored Lot Size
0.100 BTC × $1,000 USD stop distance = exactly $100.00 USD risk at stop.
Why Crypto Position Sizing Requires Precision
Bitcoin features 24/7 continuous trading, large dollar swings, and granular decimal sizing rather than traditional forex lots.
Micro-Decimal Execution
Because a single Bitcoin trades at tens of thousands of dollars, position sizing must support 0.001 BTC steps to protect small risk budgets.
24/7 Weekend Liquidity Shifts
Crypto markets do not close on weekends. Sudden liquidity drop-offs can widen spreads, requiring conservative risk budgeting on wider stops.
Compare Position Sizing on Other Instruments
Explore contract specifications and risk calculation rules across major markets.
Bitcoin Position Sizing FAQs
How is BTC/USD position size measured?
Spot and CFD crypto positions are measured directly in Bitcoin units (e.g. 0.100 BTC or 0.050 BTC). Some brokers call 1 BTC '1 lot'.
What is the minimum step for Bitcoin sizing?
Most platforms allow trading down to 0.001 BTC (or 0.01 on some margin brokers). The calculator rounds down to 0.001 BTC precision.
How does leverage affect Bitcoin margin?
Leverage determines the collateral needed to open the position. At 1:5 leverage, a 0.100 BTC position ($9,000 notional) requires $1,800 USD margin.