Free futures calculators that speak contracts, ticks and margin
Every other position size calculator on the web was built for forex — it wants a currency pair, a stop in pips and returns a lot size. Futures does not have lots or pips. It has contract multipliers, tick sizes and an exchange margin requirement that changes whenever the exchange says so. These calculators take those inputs, because there is no honest way to compute a futures risk without them.
The calculators
Why the numbers here are different
A futures risk figure has three inputs that a forex calculator does not have a field for. The contract multiplier converts a price move into cash, and it is set per product: a one-point move is worth 5 on one index contract and 100 on a metals contract. The tick size is the smallest price increment the exchange permits, so it defines both the finest placeable order and the unit traders actually use to describe stops. The margin requirement is an absolute cash figure per contract published by the exchange, not a leverage ratio offered by a broker, and it is revised upward when volatility rises.
Hide any of those behind a product name and you cannot check the arithmetic. Every calculator on this site asks for them directly.
Your numbers stay on your machine
Nothing you type is sent anywhere. Every calculation runs in JavaScript inside your browser; there is no account, no database and no analytics on the inputs. You can disconnect from the internet after the page loads and every tool will keep working. That is a deliberate design choice for a site whose inputs are your account size, your position size and your trade history.
What is not here
No signals, no recommendations, no “best contract” rankings, and nothing that tells you whether to trade. These are arithmetic tools. What they will do is stop you from sizing a position on a number that was never converted into money in the first place — which is the most common expensive mistake in futures, and the reason most of these pages exist.