How to calculate crypto position size
The calculator converts a maximum account-risk percentage and the distance between entry and stop into a position size. Estimated fees are removed from the risk budget before units are calculated, so the planned loss does not quietly exceed the selected risk amount in the simple model.
Risk amount = account size x risk percentage / 100Stop distance = absolute value of entry price - stop priceUsable risk = maximum of risk amount - estimated fees, or zeroPosition units = usable risk / stop distancePosition sizing example
| Example | Account | Risk | Entry / stop | Fees | Units | Notional |
|---|---|---|---|---|---|---|
| Long | $10,000 | 1% ($100) | $100 / $95 | $10 | 18.00 | $1800.00 |
| Short | $15,000 | 0.75% ($112.50) | $200 / $210 | $12.50 | 10.00 | $2000.00 |
Both examples are deterministic illustrations, not trade recommendations. For a short position, stop distance is still the absolute difference between entry and stop.
Crypto lot size calculator
A lot-size result is meaningful only when it fits the relevant platform minimum order size, contract specification, selected market, and available balance. Use the estimated units as a planning check, then confirm the order size on the platform before submitting it.
Bitcoin position size calculator
The same formula can be used for Bitcoin when the account balance, entry price, stop price, and estimated fees are expressed consistently. A $10,000 account risking 1% has a $100 risk budget before fees; the unit amount depends on the chosen BTC entry and stop distance rather than a fixed lot size.
Stop loss and risk per trade
Leverage changes margin and liquidation mechanics; it does not reduce the underlying planned-loss calculation. Slippage, gaps through the stop, partial fills, liquidation, funding, spread, and changing fees can all make actual loss larger than this estimate.
Inputs are calculated in the browser and are not written to a PartnerCrypto database. Use the output as an educational planning check, then confirm the order size and current platform rules independently.
Common position sizing mistakes
Common mistakes include selecting an arbitrary unit amount before defining the stop, ignoring fees and spread, treating leverage as lower risk, using an order size below a platform minimum, and assuming a stop always fills at the chosen price. A calculation cannot remove market, platform, or execution risk.
Position size calculator FAQ
How is crypto position size calculated?
This calculator divides the usable risk budget by the absolute distance between entry and stop. Estimated fees are removed from the risk budget in the simple model.
Is this a crypto lot size calculator?
It estimates units and notional exposure from a selected risk budget and stop distance. Contract sizes, minimums, leverage, and platform rules still need to be checked on the relevant platform.
Can I use this for Bitcoin position sizing?
Yes, if the account, entry, stop, and fee inputs use consistent units. The calculation is a planning estimate, not a trade instruction or a guarantee of realized loss.
Does leverage reduce risk per trade?
No. Leverage changes margin and liquidation mechanics. Slippage, gaps, funding, partial fills, and execution can make actual loss larger than a simple planned-loss estimate.