Here's exactly how each calculator computes its numbers, and where reality can differ.
Liquidation price
For an isolated position, liquidation is approximately entry × (1 − 1/leverage + maintenance margin) for a long, and entry × (1 + 1/leverage − maintenance margin) for a short. The real price also moves with fees and the exact maintenance-margin tier your exchange uses, so we treat it as a close estimate and recommend keeping a buffer. See the leverage liquidation table for the rule-of-thumb version.
Position size
Risk-based sizing: position units = (account × risk%) / |entry − stop|. This caps your loss to a fixed % of the account if the stop is hit — the single most important habit in risk management.
DCA reality check
We separate average price (a lower break-even) from realized P/L (current value − total invested). A falling average feels like progress but is not profit; only realized P/L tells you if you're actually up.
Funding, break-even & real profit
Funding ≈ notional × rate × intervals. Break-even adds round-trip fees to entry. The real futures profit calculator combines fees, funding and slippage into one net number.
What's an estimate
All outputs are estimates for education, not quotes. Exchanges differ in maintenance margin, fee tiers, funding schedules and rounding. Always confirm against your exchange before trading.