What a crypto futures calculator does
Perpetual futures let you trade the price of a crypto asset with leverage and no expiry date. This calculator models the full lifecycle of a position: how large it is (margin × leverage), how many contracts that buys at your entry, the profit or loss at your target exit, the taker fees on opening and closing, and the price at which you would be liquidated. Running these numbers before you click 'buy' is the single most effective habit for surviving futures trading.
Long vs short positions
Going long profits when the price rises; going short profits when it falls. Futures make shorting as simple as longing, which is why traders use them to hedge spot holdings or to profit in bear markets. The PnL maths is symmetric — a long that gains on a rise loses the same amount on an equal fall, and vice versa for a short. Switch the direction field to compare both sides of a trade idea instantly.
Funding rates the calculator can't see
Perpetual contracts use a funding rate — a small periodic payment between longs and shorts that keeps the contract price tethered to spot. When funding is positive, longs pay shorts; when negative, shorts pay longs. Over days of holding, funding can add up to a meaningful cost or rebate that this calculator does not model. For short scalps it is negligible; for multi-day swing positions, check the current funding rate on your exchange and factor it in.
Managing liquidation on futures
The 'move away' figure tells you how far the price can travel against you before liquidation — your real margin of safety. At high leverage this can be alarmingly small. Always set a stop-loss inside the liquidation zone so you exit on your terms and preserve most of your margin, and consider isolated margin so one bad trade cannot drain your whole balance. Crypto exchanges differ on maker/taker fees, funding rates and maintenance-margin tiers, and tax rules vary by country. Treat these results as a planning baseline and confirm against your exchange statements and a qualified tax professional before acting.
Frequently asked questions
How do I calculate futures PnL?
Multiply the number of contracts (position size ÷ entry price) by the price move in your favour, then subtract opening and closing fees. This tool does it automatically for long or short.
What is the difference between futures and leverage trading?
Perpetual futures are the most common leveraged crypto product. Leverage is the mechanism; futures are the contract you trade with it.
Does this include funding rates?
No. Funding rates vary continuously and are paid periodically. For multi-day positions, add the expected funding cost from your exchange to the result here.
What leverage should I use on futures?
Lower than you think. Many profitable futures traders use 2–5x. High leverage liquidates on routine volatility, regardless of whether your directional call was correct.