Crypto Position Size Calculator
Find the maximum crypto position that keeps your risk within your own limit.
Maximum position size
0.008300 BTC
- Modeled stop-loss risk
- USD 9.96
- Risk-sized quantity
- 0.00833333 BTC
- Affordable maximum
- 0.01666667 BTC
- Position value
- USD 498.00
How this calculation works
What quantity fits both the planned loss budget and the selected trading mode?
Formula in plain language
- Loss budget = account balance × risk percentage ÷ 100.
- Risk per coin = absolute difference between entry and stop.
- Risk-sized quantity = loss budget ÷ risk per coin.
- For spot, cap quantity at balance ÷ entry; then round DOWN to the exchange quantity step.
- Modeled stop-loss risk = final quantity × risk per coin; position value = final quantity × entry.
What the terms mean
- Price currency
- Enter balance, entry and stop in the selected account currency. This tool does not convert a separate crypto quote currency.
- Minimum and step
- Exchange-defined smallest order and quantity increment. A rounded quantity below the minimum is not increased to force a trade.
- Spot versus leveraged
- Spot is cash-capped and long-only. Leveraged mode is risk-sized only; margin availability and liquidation must be checked separately.
Worked example
This is a fixed teaching example, separate from your current inputs.
Paper example: USD balance 1,000, risk 1%, Bitcoin, Spot / cash, Long / Buy, imaginary entry 100, stop 90, minimum 0.01 and step 0.01. These are not current Bitcoin prices.
- Loss budget: 1,000 × 1% = USD 10.
- Risk per coin: 100 − 90 = USD 10.
- Risk-sized quantity: 10 ÷ 10 = 1 BTC; cash maximum: 1,000 ÷ 100 = 10 BTC.
- Final quantity: 1 BTC fits the step. Modeled risk: 1 × 10 = USD 10; position value: 1 × 100 = USD 100.
Example result: 1.000000 BTC, USD 10.00 modeled stop-loss risk and USD 100.00 position value.
What the result means
The risk limit is your budget, while modeled risk belongs to the final rounded quantity. If cash or the quantity step reduces the position, modeled risk can be below that budget.
What this does not tell you
A stop does not guarantee the exit price. Fees, gaps, slippage, funding and liquidation can increase losses. Leveraged output does not prove affordability or exchange eligibility; the percentage is not a risk recommendation.