how to use the perps liquidation price calculator
- Choose FOMO / Hyperliquid and the market, or a custom exchange.
- Choose long or short, then enter the entry price, leverage and margin.
- For a custom exchange, enter its maintenance margin rate.
- Enter an exit price and fee to see the PnL, return on margin and fees.
formula
maintenance rate m = 1 ÷ (2 × max leverage) (Hyperliquid) long: liquidation = entry × (1 − 1/L) ÷ (1 − m) short: liquidation = entry × (1 + 1/L) ÷ (1 + m) PnL = size × (exit − entry) × side − fees
how FOMO perps liquidate
FOMO added perpetual futures in June 2026, routed to Hyperliquid and Trade[XYZ]. Every FOMO perp position uses isolated margin, with leverage caps of 40x on BTC, 25x on ETH, 20x on SOL and 10x on most other assets, and a 15 USDC minimum position. FOMO charges 0.05% of the position at open and close on top of Hyperliquid's fees, and funding is paid hourly. Perps are not available to US persons.
Hyperliquid sets the maintenance margin at half of the initial margin at the market's maximum leverage, and liquidates when your equity falls to it, based on the mark price. The calculator uses that exact rule.
worked example
Long SOL at $115 with 10x leverage on FOMO: SOL's max leverage is 20x, so maintenance margin is 2.5%. Liquidation = 115 × (1 − 0.1) ÷ (1 − 0.025) = $106.15, 7.7% below entry. Without the maintenance margin you might expect $103.50 (10% below); the real buffer is smaller.
frequently asked questions
How is liquidation price calculated?
For an isolated long: entry × (1 − 1/leverage) ÷ (1 − maintenance rate). For a short: entry × (1 + 1/leverage) ÷ (1 + maintenance rate). Fees and funding move it slightly over time.
What leverage does FOMO offer on perps?
Up to 40x on BTC, 25x on ETH, 20x on SOL and 10x on most other assets, in whole numbers, with isolated margin only.
What are FOMO's perps fees?
0.05% of the full leveraged position when you open and when you close, plus Hyperliquid's trading fee (0.045% taker at its base tier) and hourly funding.
Why was I liquidated above my calculated price?
Liquidation uses the mark price, not the last trade, and funding payments and fees reduce your margin over time. Keep a buffer between your stop and the liquidation price.
Updated . Free, no sign-up, runs in your browser. Not financial advice.