Free tool

Position size calculator

Decide the loss first, then the size. Enter your balance, the percent you are willing to lose, your entry and your stop.

The balance you trade futures with.

What you accept losing if the stop fills.

Where you plan to enter.

Below entry for a long, above for a short.

Used for margin only, 1–125.

Check your own KuCoin fee tier.

Base units per contract, from the contract specs on KuCoin. Rounds down to whole contracts.

Your position

Long · stop 2.08% from entry

0.035714 units

Position value
$2,400.00
Margin at 5x
$480.00
Risk at the stop
$50.00
Loss at stop, with fees
$52.88
+1R target price
68,600
Est. round-trip fees
$2.88

A stop can fill worse than its price in fast markets, and funding payments are not included. This is a sizing aid, not advice.

How the size is calculated

size = (balance × risk %) ÷ |entry − stop|

The stop decides the size, not the other way round. A wider stop means a smaller position for the same dollar risk. Leverage changes only the margin you post, not what you lose at the stop.

With isolated margin, a position is liquidated when the loss eats the posted margin. If your stop is farther from the entry than 1 ÷ leverage, the position can be liquidated before the stop is reached, so the calculator warns you.

Fees are charged on the full position value at entry and exit. Funding payments and slippage are not included.