Work the trade out before you place it
Four calculators, each one form and a live result. No sign-up, nothing sent anywhere - the arithmetic happens in your browser, and every page writes out the formula so you can check it against your own numbers.
Position size
How much to buy so a stop costs you a fixed number of dollars.
Account, risk %, entry, stopLiquidation price
Where a leveraged position gets closed for you, long or short.
Entry, leverage, side, maintenance %Funding cost
What holding a perp costs per day at the current annualised rate.
Notional, funding %, daysProfit and loss
Net result after both sides of the fee, in dollars and in percent.
Entry, exit, size, fee %Why these four
They are the arithmetic a trader does before an order and gets wrong under time pressure: how big, where it dies, what the carry costs, and what is actually left after fees. Anything that needs live prices reads our own composite - see the prices page.