Leverage calculator
Set a stake and a multiplier and see what you can actually make, and where you get closed. The simulator returns the exposure, the round-trip cost, the price that closes the position and the profit or loss at any exit you pick, priced against 45 markets on their live bars.
Your stake sets size, your multiplier sets room
Your exposure is your stake times your multiplier, and your profit or loss is that exposure times the move. Your stake decides how big the bet is. Your multiplier decides how little the market has to move to end it. Losses stop at your wager, so every downside figure here is clamped there.
Your room to liquidation is one divided by your multiplier, because Moon closes a wager once it has lost the wager and holds no maintenance buffer ahead of that. That runway falls from 10.000 per cent at 10x to 0.100 per cent at 1000x, so every tenfold step up takes away nine tenths of the room you had to be wrong in.
The fee is the part most calculators get backwards. Moon charges it on your wager and explicitly not on your exposure, so a $100 wager costs $1 to open at 10x and $1 at 1000x. Both the fee and the room scale with your wager, so the fee is always 1 per cent of the distance between your entry and the price that ends you, at every multiplier.
Stop weighing the fee, then, and check the runway instead. Take the distance the calculator returns and compare it against how far your market travels against you in a normal session.
A long here is priced from the ask and marked on the bid, and a short the reverse, so a spread would be charged the way a real round trip pays it. Moon publishes no spread, so that adjustment is zero rather than guessed at. Third-party testers say Moon's settlement price carries one, which would make every figure here better than your real fill.
The calculator models what a fill would do. It does not place one. Indicative example based on third-party market data. Moon's reference price, spread, fees, settlement and liquidation rules may produce a different result.
Where these numbers came from
The opening fee the calculator defaults to, and the rule that your loss stops at your wager, both come from Moon's own documentation rather than from an assumption. The fee page works the arithmetic through every multiplier and shows why the cost column stays flat while the runway column collapses.