How is PnL calculated for a long position?

For a linear contract, gross PnL equals quantity times exit price minus entry price. For a short it is quantity times entry minus exit. Fees on both entry and exit notional are subtracted to give net PnL. Inverse contracts use the reciprocal-price formula instead.

What is ROE on a leveraged trade?

Return on equity is net PnL divided by the initial margin you posted, expressed as a percent. Because leverage shrinks the margin, a small price move can produce a large ROE, which is why leveraged positions are higher risk.

What is the difference between linear and inverse contracts?

Linear contracts are margined and settled in the quote currency such as USDT, so PnL is in dollars. Inverse contracts are coin-margined, so a BTCUSD position is settled in BTC and uses reciprocal prices. The tool applies the correct formula for each.

Does this include funding fees?

No. It models trading fees on entry and exit but not the periodic funding payments that perpetual swaps charge between longs and shorts, nor slippage or liquidation. Add those separately for a full picture of a long-held position.

Why is my inverse PnL such a small number?

Inverse contract PnL and margin are denominated in the base coin rather than dollars, so the figures look small. Multiply by the coin price to express the result in USD.

Crypto Futures PnL Calculator

When you close a leveraged crypto futures position, your real result is gross price move minus the fees you paid on both legs. This calculator computes the full breakdown for long or short trades on both linear (USDT-margined) and inverse (coin-margined) contracts, including return on equity.

How it works

For a linear contract the quantity in coins drives everything:

qty = size in coins, or sizeUSD / entry
long  gross PnL  = qty × (exit − entry)
short gross PnL  = qty × (entry − exit)
fees             = (qty×entry + qty×exit) × feeRate
net PnL          = gross − fees
margin           = (qty × entry) / leverage
ROE %            = net PnL / margin × 100

For an inverse (coin-margined) contract, profit settles in the base coin and uses reciprocal prices:

long  PnL(coin) = notionalUSD × (1/entry − 1/exit)
short PnL(coin) = notionalUSD × (1/exit − 1/entry)
margin(coin)    = notionalUSD / (entry × leverage)

Example and notes

Going long 1,000 USD of BTC at 60,000 and closing at 66,000 on a linear contract returns roughly 100 USD gross before fees, and with 10× leverage that is a 100% ROE on the 100 USD margin. The same move on an inverse contract returns a small amount of BTC. Funding, slippage, and liquidation are not modelled, so treat the output as a clean trade estimate, not a guaranteed result.