Crypto Perpetual Futures Liquidation Price & Position Size Calculator (2026)

A naive calculation assumes `10x` leverage gives a `10%` drop buffer. In reality, exchanges enforce a **Maintenance Margin Rate (`MMR`, typically `0.4%` to `1.0%` of total notional position size)** plus an estimated liquidation close fee to prevent the position from going bankrupt into negative equity. On `10x` leverage (`10%` initial margin) with a `0.5%` MMR, liquidation triggers around a `~9.5%` move against you.

No! Your dollar loss at a Stop-Loss is determined strictly by `Position Quantity × |Entry Price - Stop Loss Price|` (plus fees). Leverage only controls how much **Initial Margin collateral** is locked up to hold that position—and where your **Liquidation Price** sits. However, if you raise leverage so high that the Liquidation Price crosses *inside* your Stop-Loss, you will be liquidated early with an extra liquidation penalty fee.

If your total account balance is `E`, your maximum acceptable risk per trade is `r` (e.g., `0.01` for `1%`), your entry price is `P_entry`, and your stop-loss price is `P_stop`, the exact token quantity `Q` to trade is: `Q = (E × r) / |P_entry - P_stop|`, giving a total notional position value of `Notional = Q × P_entry`.

In **Isolated Margin**, only the specific collateral assigned to that single position is at risk; if liquidated, the rest of your wallet balance is untouched. In **Cross Margin**, your entire available futures wallet balance acts as shared collateral across all open positions—pushing your liquidation price further away, but risking 100% of your account balance during a flash crash.

Because perpetual futures contracts never expire, exchanges use a peer-to-peer **Funding Rate** every 8 hours (00:00, 08:00, and 16:00 UTC on most venues, or hourly on Hyperliquid/dYdX) to tether perp price to spot price. When funding is positive (`+0.01%`), Longs pay Shorts `Notional × FundingRate`; when funding is negative, Shorts pay Longs.