Open the tool
Keep losses bounded by choosing size from how much you are willing to lose if the stop hits, not from max available leverage.
Launch Position Size Calculator →Purpose
Keep losses bounded by choosing size from how much you are willing to lose if the stop hits, not from max available leverage.
When to use it
- Before opening a leveraged or spot trade with a clear invalidation
- When a friend asks “how many coins should I buy?”
- To translate % risk into notional size
- Alongside liquidation estimates
How to use it
- Set risk amount. Decide how much equity you can lose if the stop is hit.
- Enter entry and stop. Use realistic prices for your setup.
- Read suggested size. The calculator maps risk and stop distance into position size.
- Check liquidation. If leveraged, confirm the liquidation price still sits beyond your stop buffer.
Benefits
- Risk-first sizing habit
- Works without an exchange login
- Pairs with risk/reward and liquidation tools
- Clear monospace outputs
Pitfalls to avoid
- Gaps can blow through stops
- Fees and funding change true risk
- Venue mark prices differ
- Not financial advice
Why leverage last
Starting from “I want 20×” often ignores whether the stop distance fits the account. Size from risk first; leverage is whatever that size implies on your margin.
Related links
Updated 2026-09-09. Educational only — not financial advice.